Oral Exam Guide (needs format editing) Flashcards
feel free to make adjusments and fix formatting. questions directly out of oral exam guide
What is the minimum flight crew?
2 PILOTS.
What is maximum runway slope?
Answer: ± 2% OF RUNWAY LENGTH.
Reference: OM Vol. 1, Section 1, Limitations
What is maximum temperature for aircraft operation?
Answer: ISA + 35ºC.
Reference: OM Vol. 1, Section 1, Limitations
What is the maximum takeoff and landing pressure altitude?
Answer: EMB-135LR and EMB-145LR: -1000 ft to 8000 ft.
EMB-145XR: -1000 ft to 10000 ft.
Reference: OM Vol. 1, Section 1, Limitations
What are the minimum and maximum fuel tank temperatures?
Answer: -40ºC to 52ºC.
Reference: OM Vol. 1, Section 1, Limitations
On a cold morning day, a GPU is not available so the APU is to be used, what is the minimum battery temperature for APU start?
Answer: The minimum battery temperature for APU start is -20ºC.
Reference: OM Vol. 1, Section 1, Limitations
What are the APU starter limits? At what percent rotor speed would the APU automatically shut down? How long can the APU operate in the amber range?
Answer: After 1st Attempt: 1 MINUTE OFF. After 2nd Attempt: 1 MINUTE OFF. After 3rd Attempt: 30 MINUTES OFF. The APU will be automatically shut down at 104% rotor speed. The APU EGT may exceed 680ºC up to 717ºC (Amber) for a maximum of 5 minutes.
Reference: OM Vol. 1, Section 1, Limitations
What is the maximum Electrical load on the APU above 30,000’?
Answer: 300 Amps above 30,000 ft..
Reference: OM Vol. 1, Section 1, Limitations
Assuming the oil temperature is -15°C, can engines be started?
Answer: Yes, the minimum oil temperature for starting is -40ºC.
Reference: OM Vol. 1, Section 1, Limitations
What is the maximum ITT during engine start?
Answer: 800ºC. Temperatures above 800ºC are permitted after 57% N2.
Reference: OM Vol. 1, Section 1, Limitations
If a crew has a ‘hung start’ during the 1st start attempt, what is the minimum time a crew must wait before another engine start can be attempted? What about engine start cycles 2 through 5?
Answer: 1 MINUTE OFF minimum after the 1st start attempt. The 2nd through 4th start attempt is 1 MINUTE ON, 1 MINUTE OFF. The 5th start attempt is 1 MINUTE ON, 5 MINUTES OFF.
Reference: OM Vol. 1, Section 1, Limitations
If a cold engine is started and the oil pressure increases to 120psi, what should the crew do? What if it was 115 psi?
Answer: 110 psi may be exceeded during starts if oil temperature is below 21ºC. The engine must remain at IDLE until the oil pressure is less than 110 psi.
Reference: OM Vol. 1, Section 1, Limitations
While taxiing out to the runway (using less than 88% N2) what is the acceptable oil pressure range
Answer: 34 psi to 110 psi (Green Range)
Reference: OM Vol. 1, Section 1, Limitations
What is the definition of a cold engine?
Answer: An engine is considered to be cold if it has been shut down for more than 90 minutes.
Reference: OM Vol.1, Section 1, Limitations
Assuming a cold engine, how long must the engine run to meet the engine warm-up limitations?
Answer: 4 minutes.
Reference: OM Vol. 1, Section 1, Limitations
Assuming a warm engine, how long must the engine run to meet the engine warm-up limitations?
Answer: 2 minutes.
Reference: OM Vol. 1, Section 1, Limitations
Assuming the engine was cold and the engine has run for 4 minutes, can the crew takeoff if the engine temperature is 38ºC?
Answer: No, to increase N2 above 83%, the engine oil temperature must be at 40ºC minimum. In lieu of this limit, it is acceptable to either to run the engine for at least 8 minutes or complete a static run-up to 88% N2, allow the engine to stabilize, check to ensure that the oil pressure is equal to or less than 83 psi.
Reference: OM Vol. 1, Section 1, Limitations
What is the min./max. SAT for takeoff?
Answer: -40/52 ºC
Reference: OM Vol. 1, Section 1, Limitations
What is the maximum tailwind component for T/O and Landing?
Answer: 10 KTS.
Reference: OM Vol. 1, Section 1, Limitations
What limitations are imposed on using the windshield wipers?
Answer: 170 KIAS. Do not operate on a dry windshield.
Reference: OM Vol. 1, Section 1, Limitations
What is VLO for retraction/extension? What is VLE?
Answer: VLO 200 KTS (retraction) 250 KTS (extension) VLE 250 KTS.
Reference: OM Vol. 1, Section 1, Limitations
On the takeoff roll, the oil pressure drops to 42 psi. Is this acceptable?
Answer: While this is an abnormal condition, operation between 34 and 48 psi (A1E) or between 34 and 50 psi (A1P & A1/3) is permitted during takeoff and go around phases of flight.
Reference: OM Vol. 1, Section 1, Limitations
On the takeoff roll the oil pressure increases to 112 psi. Is this acceptable? Would an increase to 118 psi be allowed? For how long?
Answer: Yes, 112 psi is permitted in all operational modes and is time limited to 5 minutes. Operation in the oil pressure amber range between 116 psi and 155 psi is permitted in all operational modes and is time limited to 2 minutes. However, total time above 110 psi may not exceed 5 minutes.
Reference: OM Vol. 1, Section 1, Limitations
How long can the aircraft remain in the takeoff thrust setting? What is the maximum N1 value?
Answer: Takeoff thrust is time limited to 5 minutes. 100% N1.
Reference: OM Vol. 1, Section 1, Limitations
How long can a vibration remain in the amber range, up to but not including 2.5 IPS during takeoff?
Answer: The normal range may be exceeded up to (but not including) 2.5 IPS for 5 minutes during the takeoff or go-around phases of flight.
Reference: OM Vol. 1, Section 1, Limitations
After takeoff, how soon can the autopilot be engaged?
Answer: Minimum Engagement Height after Takeoff: 500 FT. AGL.
Reference: OM Vol. 1, Section 1, Limitations
What is the maximum airspeed after takeoff without re-trimming?
Answer: 160 KIAS.
Reference: OM Vol. 1, Section 1, Limitations
On a non-XR aircraft, if an electrical abnormal caused the aircraft to rely solely on the main batteries for electrical power, how long would the ISIS remain powered?
Answer: Maximum duration of the ISIS when operating only on batteries is 40 minutes. The maximum duration of battery power can be extended to 45 minutes if the pitot 3 sensor heating button is turned off when not operating in icing conditions.
Reference: OM Vol. 1, Section 1, Limitations
Although the airplane is heavily automated with respect to pressurization, what are the values for maximum differential pressure/overpressure/negative pressure?
Answer: Maximum Differential Pressure 7.8 psi.
Maximum Differential Overpressure 8.1 psi
Maximum Differential Negative Pressure -0.3 psi
Reference: OM Vol. 1, Section 1, Limitations
The crew usually can let the aircraft automatically handle the anti-ice operations. If there was a malfunction and manual anti-icing operations became necessary, what would be the minimum and maximum temperatures limits be?
Answer: Minimum Temperature for Manual Anti-ice Operation -40ºC.
Maximum Temperature for Manual Anti-ice Operation 10ºC.
Reference: OM Vol. 1, Section 1, Limitations
What is VA? What is the maximum airspeed for turbulent air penetration?
Answer: 200 KIAS At or below 10,000 ft. 200 KIAS. Above 10,000 ft. 250 KIAS/0.63M, WHICHEVER IS LOWER. Reference: OM Vol. 1, Section 1, Limitations
What is the min./max. SAT at FL370?
Answer: -65ºC/-21.5ºC.
Reference: OM Vol. 1, Section 1, Limitations
The TAT is limited to what, when operating above FL250?
Answer: Total Air Temperature in cruise flight above 25,000 ft. is limited to -45ºC. However, if momentary deviations occur down to -50°C, no maintenance action is required.
Reference: OM Vol.1, Section 1, Limitations
Enroute the crew notices a fuel imbalance of 500 lbs. Has a limitation been exceeded? What is the maximum fuel imbalance allowed?
Answer: No, the maximum permitted fuel imbalance between wing tanks is 800lbs.
Reference: OM Vol. 1, Section 1, Limitations
If holding in icing conditions what configuration and minimum airspeed should be used?
Answer: Landing Gear UP
Flaps 0º
Minimum Airspeed 200 KIAS
Reference: OM Vol. 1, Section 1, Limitations
When descending into an airport, what is the maximum flap extension altitude?
Answer: Maximum Altitude for Flap Extension is 20,000 FT.
Reference: OM Vol. 1, Section 1, Limitations
What are the maximum flap extension speeds for flaps 9°, 18°, 22°, 45°? Is the EMB-145XR different? What if operating above 10, 000’ MSL?
Answer: 9º 250 KIAS 18º 200 KIAS 22º 200 KIAS 45º non-XR 145 KIAS 45º XR 160 KIAS Above 10,000 ft. with yaw damper disengaged: 22º XR 180 KIAS 45º XR 145 KIAS Reference: OM Vol. 1, Section 1, Limitations
While on an approach what are the minimum disengagement heights?
Answer: Minimum During Visual Approach 200 FT. AGL.
Minimum During CAT I ILS Approach 200 FT. AGL.
Minimum During CAT II ILS Approach 85 FT. AGL
Minimum During Non-Precision Approach BEFORE LEAVING MDA
Reference: OM Vol. 1, Section 1, Limitations
When landing below what temperature would a maintenance inspection be required?
Answer: In the event of a landing below -40ºC, the airplane may not takeoff without a maintenance inspection.
Reference: OM Vol. 1, Section 1, Limitations
When must the TSA Exterior Security inspection be conducted?
Answer: Before the first flight of the day for that aircraft.
Before any flight departing the US to any foreign location (except Canada).
Before any flight departing a foreign location to the US (except Canada).
Upon arrival into the US from any foreign location (except Canada).
Reference: FOM, Section 3, International Security
Is there a requirement to open an access panel secured with a screw fastener during the aforementioned TSA inspection?
Answer: No, crewmembers are not required to open any panel that requires a screw driver to open the panel.
Reference: OM Vol.1, Section 2, Before Start Check
How can an RVSM critical area be identified?
Answer: RVSM critical areas may be identified by markings (four yellow corners) surrounding the areas of the fuselage adjacent to the primary static ports.
Reference: OM Vol.1, Section 3, Exterior Inspection
When inspecting RVSM critical areas, what conditions would preclude flight in RVSM?
Answer: Creases, dents, deformations or bulges in the skin and/or deformations of the static sources. On the other hand, rub marks, dirt without obvious damage or deformation DO NOT preclude RVSM operations.
Reference: OM Vol.1, Section 3, Exterior Inspection
What requirement exists for the nose gear static discharger?
Answer: It must be touching the ground.
Reference: OM Vol.1, Section 3, Exterior Inspection
How many static dischargers are found on LR wings versus an XR aircraft?
Answer: 5 static dischargers are installed on each LR wing. 7 static dischargers (including winglets) are installed on each XR wing.
Reference: OM Vol.1, Section 3, Exterior Inspection
Can the aircraft be dispatched with missing static dischargers?
Answer: Yes, dispatch of an aircraft is permitted with missing static dischargers provided they are deferred in accordance with the provisions of the CDL.
Reference: EMB-145 MEL Handbook, CDL, System 23
Regarding tire wear, what is the minimum acceptable condition of an aircraft tire?
Answer: The tire should not be worn past the bottom of the tire grooves. Operating past the grooves will result in the loss of cut protection and penetration of the first ply will render the tire unsatisfactory for retread.
Reference: OM Vol.1, Section 3, Exterior Inspection
How can brake wear be checked?
Answer: Brake wear can be checked by inspecting the brake wear indicators from a vantage point in front of and behind the aircraft tires. Wear indicators should be no less than flush with the housing.
Reference: OM Vol.1, Section 3, Exterior Inspection
If a gear uplock hook is in the locked position, what must be done?
Answer: Maintenance action is required.
Reference: OM Vol.1, Section 3, Exterior Inspection
When fluid is present within the nacelle drain sight glass, what else should be checked prior to notifying maintenance?
Answer: The six holes located around the sight glass must be inspected for presence of leaks, stains, or other evidence of fluid. If multiple indications of a leakage are present and/or the leakage appears to be excessive or consists of flammable fluids, maintenance must be notified.
Reference: OM Vol.1, Section 3, Exterior Inspection
What would a missing safety disc next to the oxygen service panel indicate?
Answer: A missing disc indicates that the oxygen system has been over- pressurized during servicing.
Reference: OM Vol. 2, Section 16, Flight Crew Oxygen.
How many vortex generators are installed above each wing?
Answer: There are 12 vortex generators installed on the upper surface of each wing.
Reference: OM Vol.1, Section 3, Exterior Inspection
How many vortilons does each wing have?
Answer: There are 4 vortilons on the lower surface of each wing.
Reference: OM Vol.1, Section 3, Exterior Inspection
Who calls for all checklists while on the ground?
Answer: The Captain.
Reference: OM Vol. 1, Section 2, General
Who may do the Power Down Check?
Answer: The Power Down flow may be performed by either flight crewmember when passengers have deplaned. Upon completion of the flow, the crewmember will then complete the silent Power Down Check.
Reference: OM Vol. 1, Section 2, Power Down Check
When must a Receiving Check be accomplished?
Answer: The Receiving Check is accomplished when any of the following conditions are met:
The Power Up Check was accomplished
First flight of the day
Crew’s first flight on the aircraft
After maintenance
After possible unsupervised access to the flightdeck
Reference: OM Vol. 1, Section 2, Receiving Check
May checklist items specific to the XR only (such as “Backup Battery”) on the First Flight Check be skipped if in an LR?
Answer: No
Reference: OM Vol. 1, Section 2, General
What items must be checked as part of the Power Up Check?
Maintenance Status…Ckd Parking Brake Handle…Set Flap Handle…0 Thrust Levers…Idle Gust Lock…Set Speed Brake Handle…Closed Elevator and Aileron Disconnect Handles…In Gear Handle…Down RADAR…STBY Hydraulic Pumps…OFF Circuit Breakers…Ckd Batteries…AUTO Backup Battery…As Required Nosewheel Steering…Disengaged EICAS…Ckd Parking Brake…ON Electrical…Set FMS…Initialize
May a CB be reset prior to power up?
Answer: If a circuit breaker is tripped on the ground, do not reset until contacting Maintenance Control to discover the cause.
Reference: FOM Section 2, Tripped Circuit Breaker Procedure
What emergency equipment is located in the cockpit?
Answer: 3 smoke goggles, 3 life jackets, 2 escape ropes, 2 flash lights 1 PBE, 1 Halon extinguisher, 1 crash ax, 1 set of fire gloves.
Reference: OM Vol. 1, Section 2, Receiving Check
What is the procedure to use if the status LED light for the CVR does not illuminate?
Answer: Plug a headset into the CVR panel, press the TEST button and listen for a tone.
Reference: OM Vol. 1, Section 2, First Flight Check
Why might you start the APU at the end of the Power Up Flow, rather than waiting until 5-10 minutes prior to push?
Answer: If the battery voltage is below 24V but more than 19V or for passenger / crew comfort.
Reference: OM Vol. 1, Section 2, Power Up Check
What EICAS messages are shown during a fire detection test?
Answer: ENG 1(2) FIRE, APU FIRE, BAGG SMOKE, E1 (2) FIREDET FAIL, and APU FIREDET FAIL.
Reference: OM Vol. 1, Section 2, First Flight Check
What is the procedure to use if, after a fire test, the BAGG EXT button remains illuminated?
Answer: Wait 6 seconds, then repeat the test by pressing and holding the fire detection test button for at least 2 seconds, but no longer than 10 seconds.
Reference: OM Vol. 1, Section 2, First Flight Check
What procedure is used if the APU GEN OVLD EICAS message is presented during the APU Power Up procedure?
Answer: Verify the APU amperage output of the generator on the MFD electrical page. If the APU load exceeds 500 amps, turn the #1 BATT knob to OFF. Once 3 minutes have passed and the load decreases below 400 amps, whichever occurs later, turn the #1 BATT knob back to AUTO and place the Shed Bus selector to OVRD.
Reference: OM Vol. 1, Section 2, APU Power Up Procedure
When does the CVR begin recording?
Answer: As soon as power is established to the aircraft.
Reference: OM Vol. 2, Section 2-18, Cockpit Voice Recorder
What should be set in the FLIGHT ID field of the ATC/TCAS CONTROL page on the RMU?
Answer: ASQXXXX (ASQ and the flight number as specified in the ICAO flight plan) should be entered to ensure the ADS-B system broadcasts the correct flight ID to Air Traffic Control and ADS-B IN equipped aircraft.
Reference: Bulletin “ADS-B Operational Information
- Is takeoff in heavy snow authorized?
Yes, takeoff in heavy snow is authorized subject to the following restrictions:
The aircraft, including the fuselage, must be anti-iced with undiluted Type IV fluid.
The aircraft critical surfaces must be free of contaminants or the aircraft must be properly deiced before the application of the anti-icing fluid.
A pre-takeoff contamination check must be accomplished within 5 minutes of takeoff.
If a definitive fluid failure determination cannot be made using the pre-takeoff contamination check, takeoff is not authorized. The aircraft must be completely deiced and, if precipitation is still present, anti-iced again before a subsequent takeoff.
Reference: OM Vol 1, Section 5, Ground Deicing and Anti-Icing Procedures
During operations in Ice Pellets, how is an allowance time derived?
Answer: An allowance time must be derived using the “Allowance Times Tables” (found in the FAA Holdover Time Guidelines) using the appropriate:
Precipitation types and intensities
OAT
Reference: FAA Holdover Time Guide Winter 2017-2018
What is a Pre-Takeoff Check?
Answer: This check is conducted within the aircraft’s HOT, just prior to takeoff, and is made by observing representative surfaces from inside the flightdeck, to determine that the aircraft is free of contaminants.
Reference: OM Vol 1, Section 5, Ground Deicing and Anti-Icing Procedures
What is a Pre-Takeoff Contamination Check?
Answer: An external tactile check conducted after the HOT has been exceeded to ensure wings, control surfaces, and other critical surfaces are free of all frozen contaminants. This check must be completed within 5 minutes prior to takeoff.
Reference: OM Vol 1, Section 5, Ground Deicing and Anti-Icing Procedures
What are Representative Aircraft Surfaces?
Answer: Representative surfaces are those areas of the aircraft that are visible from the flight deck (or aircraft cabin) that, when carefully observed, allow the crew to make a reasonable determination that all critical surfaces are clear of contamination These areas include but are not limited to the following:
The windshield wiper mechanism
An unheated portion of the fuselage nose that is visible from the flight deck.
Reference: OM Vol 1, Section 5, Ground Deicing and Anti-Icing Procedures
What are considered Critical Surfaces?
Answer: Critical surfaces are defined by the aircraft manufacturer and are considered those areas on the aircraft that are most aerodynamically sensitive to the effects of adhering winter elements. EMB series critical aircraft surfaces are defined to be:
Upper/lower wing surfaces
Control surfaces (e.g., ailerons, spoilers, flaps)
Winglets
Horizontal Stabilizer
Vertical Stabilizer
Engine inlet
Fuselage
Reference: OM Vol 1, Section 5, Ground Deicing and Anti-Icing Procedures
Is a takeoff during moderate or heavy freezing rain permitted?
Answer: No. There are no holdover time guidelines for moderate or heavy freezing rain, small hail or hail.
Reference: OM Vol 1, Section 5, Ground Deicing and Anti-Icing Procedures
Which doors will cause an “ACCESS DOOR OPN” EICAS message?
Answer: Under cockpit access hatch, forward electronic access hatch, rear electronic access hatch.
Reference: OM Vol. 2, Section 2-2, Equipment and Furnishings
Which doors give a MASTER CAUTION or MASTER WARNING and when?
Answer: Master Caution: access panels (Forward Avionics, Under Cockpit Access Hatch, Rear Avionics), Emergency Exits (over-wing), Refueling Panel Access Door), Baggage Door. Master Warning: Main Cabin Door and Service Door (anytime in flight or on the ground with ENG 1 running).
Reference: OM Vol. 2, Section 2-2, Equipment and Furnishings
Which doors on the MFD T/O - DOORS page are not pressurized?
Answer: Forward avionics compartment, fuel access panel.
Reference: OM Vol. 2, Section 2-2, Equipment and Furnishings
How many portable Halon fire extinguishers and PBE’s does the EMB-145 contain?
Answer: 3 of each.
Reference: OM Vol. 2, Section 2-3, Fire Extinguishers, Protective Breathing Equipment
What type of fire extinguisher should be used to fight burning paper?
Answer: An H20 fire extinguisher.
Reference: OM Vol. 2, Section 2-3, Water Fire Extinguisher
What documents and publication are located on the flightdeck?
Airworthiness Certificate
Radio Station License
Registration Certificate
Aircraft Noise Certification Form (If missing, contact OSC)
AFDL (Aircraft Flight Discrepancy Log) (If missing contact OSC)
DMIL (Deferred Maintenance Item Log)
Normal Checklist (2) (If missing may use EFB version but recommended to be replaced at next maintenance base)
FRG (Flightdeck Reference Guide) (If missing may use EFB version but recommended to be replaced at next maintenance base)
QRH (Quick Reference Handbook)
IAI (Immediate Action Items) (If missing may use EFB version but recommended to be replaced at next maintenance base)
AeroData Backup Form
International Documentation Package (If opened or missing, refer to MEL)
Reference: OM Vol. 1, Section 2, Receiving Check
Can the aircraft be dispatched if the international documentation is missing?
Answer: Yes. Mexican Insurance is required to be in paper format onboard the aircraft only when operating to and from Mexico. Electronic International Documentation is permitted for all other countries.
Reference: NEF CP-23
Can the aircraft be dispatched if the FRG or any checklists be missing?
Answer: Yes, the EFB version may be used until the aircraft reaches a station where a replacement may be obtained.
Reference: OM Vol 1, Section 2, Receiving Check
What parameters are checked with the Takeoff Configuration button? What threats are associated with this check?
Answer: Pitch trim between 4°-8 (green band), flaps between 9°-22°, parking brake not set, and spoilers stowed. The check does not ensure both engines are running.
Reference: OM Vol. 2, Section 2-4, Crew Awareness
During any windshear warning, should the aircraft be immediately re-configured to Gear Up/Flaps 9°?
Answer: No.
Reference: OM Vol. 1, Section 5, Windshear Escape Maneuver
What is the protocol when encountering windshear for both the PF and PM?
Answer: Disengage the autopilot and initiate a go-around by pressing the go-around buttons on the thrust levers and pitch to the attitude commanded by the flight director while simultaneously applying maximum thrust. Do not change the aircraft configuration (flaps or landing gear position) UNTIL ALL WINDSHEAR presentations/ indications are no longer present and terrain contact is no longer a factor. Flight guidance must be followed initially. Flight guidance may be abandoned for pitch reference if ground contact appears imminent. In this case, the PLI (up to the stick shaker) is the maximum pitch limit. Adjust pitch attitude smoothly and in small increments to control vertical speed and attitude. Pilots should be aware that speed may decay below reference speeds and that stick forces necessary to maintain an increased pitch attitude may be well above normal. When the WSHR vertical mode is active, the altitude select function (ASEL) is not armed and, therefore, any selected altitude will not be captured. The PM should call out AGL Altitude and Trends while in windshear.
Reference: OM Vol. 1, Section 5, Windshear Escape Maneuver
What will be heard if the aural warning unit test is successful?
Answer: If both aural warning unit channels are operating properly, the voice message “AURAL UNIT OK” is generated.
Reference: OM Vol. 1, Section 2, Power Up Check
The EICAS caution message “AURAL WARN FAIL” will only be presented when?
Answer: The message is displayed when both channel A and channel B of the aural warning unit have failed simultaneously.
Reference: OM Vol. 2, Section 2-4, Crew Awareness
How many transponders are on the EMB-145 aircraft? How can the transponder in use be changed?
Answer: 2; On the RMU, while the ATC/TCAS area is highlighted, press the 1/2 button to change the transponder being used.
Reference: OM Vol. 1, Section 2, Engine Start Check/OM Vol.2, Section 2-18, Navigation and Communication
A failure of an ADC would be indicated by___________.
Answer: A red X failure indication appearing on the airspeed tape, altitude tape, and the vertical speed pointer is removed and replaced by a red boxed VS.
Reference: OM Vol. 2, Section 2-4, Crew Awareness
What does an amber HDG comparator flag on the PFD/MFD indicate?
Answer: A difference of 6 degrees between the heading information compared by the two symbol generators.
Reference: OM Vol. 2, Section 2-4, Crew Awareness
When would an amber IAS comparator flag be presented?
Answer: When the CA and FO’s indicated airspeeds (calibrated) differ by 5 knots or more for longer than 2 seconds.
Reference: OM Vol. 2, Section 2-4, Crew Awareness
When would an amber ALT comparator flag be presented?
Answer: When the CA and FO’s indicated altitudes differ by more than 200 feet.
Reference: OM Vol. 2, Section 2-4, Crew Awareness
What does the message ‘CAS MSG’ indicate when presented on the PFD?
Answer: There is a disagreement between the IC-600s on the EICAS message displayed.
Reference: OM Vol. 2, Section 2-4, Crew Awareness
When does the digital flight data recorder (DFDR) begin recording?
Answer: When the beacon is turned on or weight off wheels
Reference: OM Vol. 2, Section 2-4, Crew Awareness
What indications would be displayed on the MFD and PFD immediately following an AHRS failure?
Answer: ATT FAIL, HDG FAIL, HDG FAIL (on MFD if in MAP mode)
Reference: OM Vol. 2, Section 2-4, Crew Awareness
When will the stick shaker activate?
Answer: When the aircraft symbol touches the PLI.
Reference: OM Vol. 2, Section 2-4, Stall Protection System
When your airspeed is in the amber band of the low speed awareness tape, what color is the PLI?
Answer: The PLI is red.
Reference: OM Vol. 2, Section 2-4, Stall Protection System
When is the stick pusher inhibited?
On the ground (except during the test)
Below .5 G
If the quick disconnect button is kept pressed
Below 200 ft. AGL (reverts to 10 seconds after takeoff if the radio altimeters have failed)
If either SPS cutout button has been pressed (released or, unlatched button position)
Above 200 KIAS
If at least one SPS channel is inoperative
Reference: OM Vol. 2, Section 2-4, Stall Protection System
What does the EICAS message SPS ADVANCED indicate?
SPS ADVANCED indicates that Stick shaker and pusher actuation is set to lower AOAs (higher speeds) due to a system component failure.
Reference: OM Vol. 2, Section 2-4, Stall Protection System
When does the SPS/ICE SPEEDS message clear after flying into icing conditions?
Answer: Only on the ground after performing a stall test.
Reference: OM Vol. 2, Section 2-4, Stall Protection System
When must the SPS test be performed?
Answer: During the CA’s Before Start flow, prior to every flight.
Reference: OM Vol. 1, Section 2, Before Start Check
Describe the normal visual indications of a DC Bus 1 failure.
Answer: PFD 1 and MFD 2 are blank
FMS (single FMS) or FMS 1 (dual FMS) is blank
Reference: OM Vol 2, Section 2-4 Crew Awareness
Describe the normal visual indications of a DC Bus 2 failure.
Answer: MFD 1 and PFD 2 are blank; MFD 2 has red X;
FMS 2 (dual FMS) is blank
Reference: OM Vol 2, Section 2-4 Crew Awareness
What indications would be displayed if Pitot Tube 1 is suddenly blocked?
Should the pitot tube become suddenly blocked (along with its drain hole) by ice, an insect or some other foreign material, it would probably go unnoticed in level flight. In a climb or a descent, however, an airspeed indicator relying on a blocked pitot tube would behave like an altimeter. The trapped pitot pressure is then measured against the varying static pressure and the result is displayed on the indicator
The EICAS message DFDR Fail is a normal message after the Power Up Flow because:
Answer: The Beacon is off until the CA’s Engine Start Flow. If this message is presented while the Beacon is ON, reference the QRH.
Reference: OM Vol 2, Section 2-4 Crew Awareness
A TCAS Resolution Advisory is indicated by
Vertical maneuver commands (red and green arcs) on VSI.
Threat level symbology (red square symbol) on MFD TCAS display
Vertical maneuver aural warning (i.e.: “Traffic, Climb, Climb”)
Reference: OM Vol 1, Section 7, Supplemental Information
When is the ground service bus powered? What is available when using the ground service bus?
The ground service bus will be powered when a GPU is powered, plugged into the aircraft, but not selected, and the batteries are off.; Items available while on the ground service bus include the Passenger cabin lights, Lavatory lights, Galley lights, Courtesy lights, Cockpit dome lights, and Baggage/service compartment lights.
Reference: OM Vol.2, Section 2-5, Electrical
Can the GPU be used to recharge the main aircraft batteries?
No, BC1 and BC2 open automatically when the GPU is selected and supplying power.
Reference: OM Vol.2, Section 2-5, Electrica
What items are powered from the inverter via the 115 VAC Bus?
Answer: TCAS, EGPWS, and Windshear.
Reference: OM Vol.2, Section 2-5, AC System
Which electrical bus supplies power to the ISIS on the 145XR?
Answer: The backup battery hot bus.
Reference: OM Vol. 2, Section 2-5, Electrical/2-17, Flight Instruments
Under what conditions are shed buses powered while on the ground assuming the SHED BUS knob is not in the OFF position?
With GPU powering the aircraft and the shed bus switch in the auto or override position.
With at least one generator online and the shed bus in the override position.
With 3 or more generators online.
Reference: OM Vol.2, Section 2-5, Electrical
What criteria must be established to have shed bus power in flight
At least 3 generators must be online for shed bus power in flight.
Reference: OM Vol.2, Section 2-5, Electrical
Is DME available when is essential power mode?
No, but VOR or Localizer based approaches may be flown so long as DME is not required.
Reference: OM Vol.2, Section 2-5, Electrical/Section 2-18, Navigation Backup Page
Define the EICAS master warning ELEC ESS XFR FAIL
Answer: The electrical system has failed to properly transfer into the essential power mode following a loss of all generators.
Reference: OM Vol.2, Section 2-5, EICAS Messages
What does the GPU AVAIL inscription on the GPU button on the overhead panel indicate?
The GPU AVAIL inscription indicates that the GPU is properly connected to the aircraft receptacle and some power is available (not necessarily sufficient or stable power).
Reference: OM Vol.2, Section 2-5, Controls and Indications
What should be the voltage range of the GPU prior to selecting it?
Answer: 26V to 29V
Reference: OM Vol I, Section 2, Power Up Check
What is the purpose of de-selecting the backup battery on the first flight of the day for XR aircraft?
Deselecting the backup battery button isolates the backup battery and the backup battery hot bus, which allows for a visual confirmation that the backup battery is charged. This is confirmed by observing the ISIS remaining powered when the system is isolated. If this test is done after selecting the GPU or starting the APU, the backup battery system will not isolate and the test is invalid.
Reference: OM Vol II Section 2-5
When may a circuit breaker be reset in flight and what protocol must be followed prior to doing so?
A circuit breaker must not be reset or cycled (i.e., opened or closed) unless doing so is consistent with OM/QRH procedures or unless in the judgment of the PIC, that resetting or cycling of the circuit breaker, is necessary for the safe completion of the flight. If a reset/cycle is attempted, comply with the reset/cycling procedure below.
Circuit Breaker Reset/Cycling Procedure:
Before attempting to reset/cycle the breaker, a three-minute cool down period is required.
If the circuit breaker trips again, DO NOT ATTEMPT ANOTHER RESET/CYCLE.
After completion of the flight, a maintenance discrepancy shall be entered, even if the reset/cycle was successful. Note which circuit breaker tripped, the cool-down period observed, and any relevant configuration or aircraft condition at the time of the circuit breaker trip.
Resetting the fuel pump circuits for the fuel quantity indicating system circuit breakers is prohibited
What happens when the ESS PWR button is pressed?
It forces the electrical system into Essential Power regardless of Electrical Distribution Logic (EDL).
Reference: OM, Vol 2, Section 5
How are the aisle pathways illuminated on the XR, and what charges it?
The aisle path lighting is provided from photoluminescent strips. The strips must be charged by allowing an un-obstructed exposure to the normal cabin lighting for 10 minutes on the first flight of the day.
Reference: OM Vol. 1, Section 2-4, Receiving Check, OM Vol. 2, Section 6, Emergency Lighting, Photoluminescent Escape Path Lighting System
How long will the emergency lighting last?
Answer: The batteries will provide power for approximately 15 minutes.
Reference: OM Vol. 2, Section 6, Emergency Lighting
Is it possible for the flight attendant to activate emergency lighting if the cockpit emergency light switch is set to OFF?
Yes, the flight attendant may override the cockpit switch and turn on emergency lighting anytime.
Reference: OM Vol. 2, Section 6, Attendant Emergency Lighting Control Button
Can the emergency light batteries be charged while they are in use?
No, the batteries are only charged when the emergency light switch is in the ARM position and the lights are not in use.
Reference: OM Vol. 2, Section 6, Controls and Indicators
When do the emergency lights illuminate automatically in the ARM position?
During an electrical emergency with power being supplied by the dedicated batteries.
Reference: OM Vol. 2, Section 6, Emergency Lighting
Will the nosewheel taxi and landing light remain illuminated following gear retraction?
No, the lights are automatically extinguished when the nose gear isn’t down and locked.
Reference: OM Vol. 2, Section 6, External Lighting
With the emergency lights in the ARM position, why would an EMG LT NOT ARMD message be presented on the EICAS?
This likely indicates that the FA has activated the emergency lights from the forward attendant control panel.
Reference: OM Vol. 2, Section 6, External Lighting
What is the power source of the nosewheel taxi and landing lights?
The nosewheel lights are shed bus powered.
Reference: OM Vol. 2, Section 5, DC Distribution Tables
Why should the COURTESY LIGHT switch be placed OFF prior to leaving the aircraft?
The courtesy lights are powered by hot bus 2; should the main door stay open with the courtesy light switch ON or AUTO, BAT 2 will drain.
Reference: OM Vol. 2, Section 6, Lighting
How can the flight crew determine whether the lavatory fire extinguisher has been used?
No cockpit indication is available. The extinguisher is inspected by MX personnel. A visual check of the trash receptacle may be used to verify if the extinguisher has discharged.
Reference: OM Vol. 2, Section 7, Lavatory Fire Protection System
What occurs when the fire handle is pulled?
When pulled, the hydraulic, bleed air, engine lip anti-icing and fuel, shutoff valves of the associated engine are closed.
Reference: OM Vol. 2, Section 7, Fire Extinguishing
How many Halon fire extinguishers are available for the engines?
2 Halon fire extinguishers are installed and are useable by either engine.
Reference: OM Vol. 2, Section 7, Fire Extinguishing
Is engine fire protection available when the aircraft is de-powered?
Yes. Engine fire protection is powered by the hot battery bus.
Reference: OM Vol. 2, Section 7, Fire Protection
Does the EICAS master warning message “LAV SMOKE” appear during a cockpit fire detection test?
NO – the lavatory smoke detector can only be tested by the flight attendant.
Reference: OM Vol. 2, Section 7, Fire Overheat/Detection System
What does the EICAS master caution “E1-2 FIRE DET FAIL” mean?
The fire detection system of the affected engine has failed. The integrity switch has detected a low-pressure condition in the affected fire loop.
Reference: OM Vol. 2, Section 7, Fire Overheat/Detection System
What messages will be presented on the EICAS after discharging halon into engine #1 using the A bottle?
E1 EXTBTLA INOP and E2 EXTBTLA INOP due to low bottle pressure.
Reference: OM Vol. 2, Section 7
What are the indications of a successful Fire Detection Test?
ENG 1(2) FIRE EICAS warning message
APU FIRE EICAS warning message
BAGG SMOKE EICAS warning message
E1(2) FIREDET FAIL EICAS caution message
APU FIREDET FAIL EICAS caution message
Master Warning and Master Caution buttons illuminated
Both fire handles illuminated
BAGG EXTG Button illuminated
Aural Fire Bell
Reference: OM Vol 1, Section 2; First Flight Check
What action is required if the BAGG EXTG button remains illuminated after the Fire Detection Test?
Repeat the fire detection test. Wait at least 6 seconds before pressing the test button again for at least 2 seconds.
Reference: OM Vol 1, Section 2; First Flight Check
What happens when the cross-feed valve is placed to LOW 1?
The pump turns off in tank 1 and the cross-feed valve opens.
Reference: OM Vol. 2, Section 8, Fuel
Is a takeoff allowed with the Fuel Imbalance EICAS message displayed?
Yes, as long as the fuel imbalance limitation is not exceeded (800 lbs.). The EICAS message remains illuminated until the imbalance is within 100 lb. If the XFEED remains out of the OFF position below 100lbs imbalance then the FUEL EQ XFEED OPEN message will be presented.
Reference: OM Vol. 2, Section 8, Fuel
What does the EICAS warning FUEL 1(2) LO LEVEL mean?
460 lbs of fuel remains in the respective tank (less than 30 minutes).
Reference: OM Vol. 2, Section 8, Fuel
When does ventral tank transfer occur on the EMB-145XR?
Automatic fuel transfer from the ventral tank to the main wing tanks occurs when both wing tanks have a quantity less than 4630 lbs. each for at least 30 seconds.
Reference: OM Vol. 2, Section 8, Ventral Tank Fuel Transfer System
Tank 1 has 3500 lbs. Tank 2 has 3700 lbs. How should the cross-feed switch be positioned to balance fuel?
The switch should be set to LOW 1 until the fuel imbalance is less than 100lbs.
Reference: OM Vol. 2, Section 8, Cross feed Operation
Is it possible to transfer fuel between the main wing tanks?
No, fuel cannot be transferred between the two wing tanks (except by MX action).
Reference: OM Vol. 2, Section 8, Cross feed Operation
What happens if the selected fuel pump fails?
The remaining wing pumps are automatically switched on and start cycling until the pilot selects one of them.
Reference: OM Vol. 2, Section 8, Engine and APU Fuel Distribution and Control
Is fuel cross feed available without normal DC power?
Yes, the valve is essentially powered.
Reference: OM Vol. 2, Section 5, DC Distribution Tables
Can you transfer fuel from the Ventral tank and cross feed at the same time?
No, Cross feed operation inhibits ventral transfer.
Reference: OM Vol. 2, Section 8, Fuel
At what fuel order would you expect to see Ventral fuel added?
Answer: Fuel orders over 10,470 lb.
Reference: OM Vol. 2, Section 8, Fuel
When is cross feed operation permitted?
During all phases of operation except for takeoff and go-around.
Reference: OM Vol.2, Section 8
Which fuel tank normally supplies fuel to the APU (assuming no cross-feed operation is taking place)?
The right fuel tank
Reference: OM Vol.2, Section 8