NATOPS - Flight Instruments, CNI Flashcards
What are the four MFD entries that are duplicatable on the DEP?
Low Altitude Warning (LAW), Course (CRS), Heading (HDG) and BINGO
Loss of the Stability Augmentation Data Sensor (SADS) computer will cause loss of what other items?
- Slats (the <217 kt relay will fail to energize),
- Control Augmentation (C AUG),
- NWS AUG, and
- blank info on displays (IAS, TAS, Altitude, Mach number, etc)
How do you set the barometric pressure (altimeter) setting on the DEU?
Through the front cockpit standby altimeter, which sends the altimeter setting to the DEU
When is the OFF flag displayed on the standby attitude indicator?
Whenever power is lost or the unit is caged
Will your standby attitude indicator work in a total electrical failure?
A minimum of 9 minutes of reliable attitude information is available after power loss, even though the OFF flag is in view
Will the standby altimeter continue to operate with a loss of the generator?
Yes, because it operates directly off static pressure. However, it may jump or lag because the vibrator operates off the 28 Vdc generator bus.
Will the standby turn needle continue to operate in the event of a total electrical failure?
No, the turn needle is driven by an electric gyro which is powered off the 28 Vdc essential bus. The inclinometer will continue to work as it is purely mechanical
At what AOA do the rudder pedal shakers and stall warning tone activate?
21.5 units
When are the AOA indexers and approach lights illuminated?
When the landing gear is down and locked and nose landing gear is weight-off-wheels
What AOA ranges cause the green, amber, and red indicator lights on the AOA indexer and approach lights to illuminate?
≥18 units (slow) - green chevron (green approach light)
17.5-18 units - green chevron and amber donut (amber approach light)
16.5-17.5 units (on speed) - amber donut (amber approach light)
16-16.5 units - amber donut and red chevron (amber approach light)
≤16 units (fast) - red chevron (red approach light)
When will the AOA indexers and approach lights flash?
When HOOK BYP switch is in CARRIER position, landing gear is down, weight-off-wheels and hook is not down
When does the RAD ALT display altitude?
From 0-5000’ AGL at aircraft attitudes of 40 degrees or less bank or pitch
What is the GINA and what are its main functions?
The GINA is an integrated inertial navigation system (INS) and GPS. It provide attitude, position, acceleration, heading, and time to the DEU
What is the heart of the avionics system?
The Display Electronics Unit (DEU)
What component provides air data to the DEU?
Stability Augmentation Data Sensor (SADS)
What are the main functions of the Airborne Data Recording System?
The ADRS provides the combined functions of
- flight incident recording,
- structural monitoring,
- engine monitoring, and
- digitizing data for transmission to the DEU
What does ADR, ASDC, and DDS stand for?
Airborne Data Recorder, Advanced Signal Data Computer, and Digital Data Set. (The DDS is the most recent modification and is installed in most of the jets)
What will you lose in the event of an ADR/ASDC/DDS failure?
- HYD caution - HYD 2 bypass valve may open-
- F PRESS caution - fuel boost pumps are lost
- AOA, TAS and wind speed/direction on MFD and HUD
- All engine data on Engine page
What are the four types of GINA failures?
- Miscompare,
- GPS,
- INS, or
- complete GINA failure
What options will you lose on your ADI display if you have a GPS failure?
HYBD and GPS options will disappear
What causes a miscompare failure and what are its indications?
Miscompare is caused when INS and GPS outputs do not agree within a certain threshold.
Indications: “AVBIT” advisory and the loss of all velocity-derived information (vertical velocity, velocity vector, ground speed, wind speed/direction, time-to-go, and baro-altitude reverts to un-filtered)
What advisories are displayed and what information is lost on the ADI during an INS failure?
ATTITUDE/POSITION, and AVBIT advisories
Attitude, heading, vertical velocity, Gs, and turn and slip indications, etc. (basically everything except air data)
What is the difference between an INS failure and a total GINA failure?
GPS option remains available with an INS failure, allowing the display of positional/time information
What are the different GINA operation modes?
HYBD - GPS provides position updates/corrections to INS (most accurate, automatically selected on power-up)
INS - Nav data provided solely by INS (automatically selected if GPS fails)
GPS - aircraft position data is provided solely by GPS (velocity vector and attitude is still driven by INS)
DGRO - attitude/heading backup mode (automatically selected when there is insufficient initialization data)
Can you file a flight plan based on GPS navigation?
No. GPS may not be used as a primary nav source to file or fly in national airspace.
How do you select which cockpit has control of the radios?
By pressing the COMM 1 or COMM 2 transfer switches on the COMM control transfer panel
What frequency bands are the comm radios capable of?
VHF and UHF from 30 to 399.975 MHz
What frequency range does the AM/FM switch function in?
Normally left in the AM position, the AM/FM mode switch only functions in the UHF range (225 to 399.975). In all other bands, AM or FM mode selection is automatic
What is the function of the ALT/NORM switch on the COMM control panel?
Allows selection of alternate audio amplifier when normal amplifier circuitry fails
***Which IFF mode contains encoded altitude information?
MODE C contains encoded altitude information provided by the DEU
How long is the IDENT function in effect after being pressed?
20 seconds
What switches have to be set for the transponder to operate normally?
Master mode control selector - NORM
MODE 3/A and/or MODE C switches - ON
What two ways can 7700 be entered without entering it manually?
Set Master mode control selector - EMER or Eject
What three electronic navigation systems is the T-45C equipped with?
TACAN, VOR/ILS, and GINA
***How do you display VOR or ILS steering info/needles?
By selecting (boxing) VOR or ILS when in CDI mode. It will not be an option in planimetric mode.
***Where are the IFF antennas located?
On the top of the nose and on the aft tailcone.
Only CNI device with two antennas
Where are the UHF/VHF antennas located?
UHF/VFH 1 is on the top fuselage behind the aft cockpit
UHF/VHF 2 is on the lower fuselage aft of the nose gear
Where is the TACAN antenna located?
On the bottom of the nose
Where are the VOR/LOC and glideslope antennas?
VOR/LOC antenna is in the left wing tip (“localizer-left)
Glideslope antenna is in the right wing tip
***How many BIT displays are there?
Two. One for weight-on-wheels and one for weight-off-wheels.
***How can you tell when GINA alignment is complete?
Waterline symbol is replaced by velocity vector on HUD
***Will your TACAN be operative with a generator failure?
Yes. It is on the 28 Vdc essential services bus
***What instrument approaches can you do with a DEU failure?
GCA only
***What does OPGO on the BIT page mean?
mux bus responding on only one channel, but no BIT failure indication
***How can you keep displays working after a generator failure?
Display switch - OVERRIDE allows you to continue to use the L MFDs, otherwise they will turn off in 2 minutes.
