FCOM AUTOFLIGHT LIMITATIONS Flashcards
When can you intentionally overpower the AP?
Never
AP Min engage height in climb, en route, descent
700’ AGL
AP min use height Precision APR with GPA <=3.5 degrees
80’ AGL
AP min use height with Precision APR with 3.5 degrees < GPA <= 4.5 degrees
160’ AGL
AP min height for non-precision or visual approaches
200’ AGL
For the AP to function, how many flight guidance computers must be operational?
2
Will the AP operate normally in secondary trim?
No
What is the main function of the AFCS?
Provide Flight guidance
Why do the flight directors display flight guidance cues on the attitude indicators?
To assist the flight crew in maintaining a specified flight path
What causes the FD command bars to appear on both PFDs?
Any flight director mode selection
What does the FD automatically default to when NAV mode is being used and the navigation source is lost?
Basic Roll mode
Can the AP be re-engaged after pulling the roll disconnect?
NO
Can the AP be engaged independently from the YD?
NO
Max Alt for AP with Yaw Damper off
31,000’ MSL
When receiving a route clearance via CPDLC …
… the crew must ensure that the FMS is updated with the proposed flight plan and its associated constraints and procedures.
Before executing any flight plan modification received via CPDLC, the crew must …
… ensure that the entire content of the flight plan has been inserted.
Use of the FANS INSERT MOD is prohibited …
… within 5 NM of sequencing a waypoint.
It is prohibited to use the WX DEV TO from …
… the FANS ROUTE REQ 1/2 page.
It is prohibited to use the DIVERT TO from …
… the EMERGENCY MSG 1/2 page using the FANS REQUEST page
FMS must be operated in accordance with …
latest revision of the AFM and the Rockwell Collins Operator’s Guide (AFM takes precedence)
It is prohibited to load pilot routes …
… from the PILOT ROUTE LIST during flight
It is prohibited to upload flight plans …
… from the ROUTE MENU (FPLN RECALL) during flight.
It is prohibited to select FLPL WIND UPDATE …
… from the ROUTE MENU
It is prohibited to tune a localizer on the …
… the TUNE page using the identifier only.
It is prohibited to initiate a NAV RADIO SELF TEST …
… from either the NAV radio tuning page on the FMS CDU or the MFD nav radio menu during flight.
In order to use the FMS as a navigation source, it must receive suitable navigation info from either:
- One GNSS or
- Two DMEs or
- One VOR / DME or
- one IRS
It is prohibited to load FMS procedures that are referenced to …
… True Heading into the flight plan.
It is prohibited to use the FMS as the primary source of navigation during …
… periods of dead reckoning (indicated by the FMS DR message)
IFR navigation is prohibited unless …
the pilot verifies the currency of the database or verifies the waypoints for accuracy by the reference to current publications.
When conducting RNP operations the pilot must verify …
… the PFD CDI scale annunciation is appropriate for the RNP leg as follows: RNP APCH: CDI Scale 0.3 nm / BASIC RNP-1: CDI Scale 1.0 nm / RNP-2: CDI Scale 2.0nm / RNP-4: CDI Scale 4nm (selected by pilot) and RNP-10: CDI Scale 4??? nm (selected by pilot)
Under BASIC RNP-1 ops the length of each flight plan leg …
… must not exceed 200 nm
Under RNP-2 ops the length of each flight plan leg …
must not exceed 400 nm
Under RNP-4 or RNP-10 ops the length of each flight plan leg …
must not exceed 500 nm
Pilot defined Way Points must not be used …
… to create individual legs shorter than the limiting length.
When conduction non-RNP operations, pilots should maintain …
CDI lateral deviation less than +/- 1 dot deviation (except during Wpt sequencing)
RNAV ops in RNAV 1, 2 or 5 are prohibited, if what FMS messages are annunciated?
FMS DR
IRS ONLY
VOR/DME ONLY
VOR/DME DIST > 40NM (CDU)
CHK POS
FMS performance data, ETE/ETA and Fuel Remaining info is
advisory only! Airplane ops must not be predicated upon FMS performance data.
FMS Engine Out performance information …
… is not available
VNAV vertical guidance is prohibited …
… when the barometric altitude is corrected to the landing field elevation (QFE)
Use of VFLC (FLC with VNAV) is prohibited …
… during climb when the airspeed reference is displayed as MACH
It is prohibited to select MCRZ …
… from the FMS VNAV CRUISE page.
It is prohibited to select VNAV following …
… a go-around during the missed approach procedure.
On the last waypoint of a STAR and / or the first waypoint of any entered approach procedure …
… the flight crew must verify and if necessary, correct any altitude / speed constraints to agree with current chart procedures.
All approaches other than vectored ILS approaches must be accomplished with …
… instrument approaches that are contained in the FMS database.
LPV Approach operations with FMS2 as pilot navigation source and FMS1 as copilot nav source …
… are prohibited.
What NAV accuracy needs to be announced in the PFD in order to use the FMS for instrument approaches?
RNP APPR or LPV APPR must be annunciated in the PFD
Which messages prevent you from flying an RNP approach down to LPV minimum?
1) Red boxed “VNV” flag (vertical dev scale on the PFD
2) NO APPR (on the PFD)
3) EFIS MISCOMPARE (CAS message)
4) EFIS COMPARATOR INOP (CAS message)
5) LPV NOT AVAIL (on CDU)
RNP operations down to LPV minimum must not be commenced or continued unless what equipment is installed and operational?
− Dual PFD
− Two GNSS/SBAS sensors must be available to commence an approach and one SBAS GNSS sensor is required to continue an approach.
− Dual FMS
Use of VNAV for VMDA approaches btwn FAF and MAP is …
prohibited
FMS as primary navigation source beyond the FAF is prohibited for …
ILS, LOC and LOC BC approaches.
You can use the FMS as a SUPPLEMENTARY nav source when APPR or REF APPR is annunciated on the PFD and if the Navigation Aid referenced in the approach procedure is displayed and monitored by the flight crew during the approach.
The FMS with inputs from GNSS may only be used for approach guidance if the reference coordinate data system for the instrument approach …
… is WGS84 or NAD83. Otherwise the GNSS sensors must be deselected.
When conducting an instrument approach with a T−Transition and utilizing VNAV for descent guidance, …
… indicated airspeed at the initial approach fix must be less than 210 KIAS.
Changes to altitudes in the final approach segment (including FAF and step−down fixes) for any FMS approach procedures …
are prohibited (other than the automated FMS temperature compensation)
It is prohibited to conduct an ILS approach with
LOC2 as pilot nav source and LOC1 as copilot nav source.
Use of the STANDBY instrument localizer deviation guidance is prohibited …
…during localizer back course approaches.
When reading the standby compass …
… the L and R WSHLD / WINDOW switches must be temporarily selected OFF.
TAWS TERRAIN OFF must be selected when …
using QFE operations and GPS is not available.
Max current for 2 or 3 generators operating
400A
Max current for one generator operating on the ground / in flight / transient (5 min)
400A / 500A / 600A
Don’t extend flaps above?
18,000’
Min battery temp for T/O
-20C
Selecting Flight Spoilers to EMER …
… is prohibited except during emergency or as required by procedure.
Min speed for extending Flight Spoilers
Vref + 8
Min Altitude for Flight Spoilers
500’ AGL
Max altitude for extending the gear
18,000’
Single point pressure refueling is limited to …
… 55 psi (defueling to -8 psi)
For T/O which fuel valves shall be selected OFF
Power and Gravity shut-off valves
Max usable fuel with pressure refuel (wing / total)
7,075 lbs per wing, 14,150 total (based on 6.75 lbs/gl)
Max usable fuel with gravity refuel (wing / total)
6,500 lbs / 13,000 lbs
Min fuel for go around
500 lbs per side
Max fuel imbalance
see Flight Crew Operating Manual, Vol 1
Max Bulk Fuel Temperature for T/O
50C
With wing bulk fuel temp >= 45C
- min fuel load for T/O: 2,800 lbs
- with <1,000 lbs / side, do not operate engine for more than 30 minutes
Min Bulk Fuel Temperature
-30C (Jet A) / -35C (Jet A-1)
Min Oil temp (ground start)
-40C
Normal T/O power is limited to how long?
5 min
APR power (1 eng inop) is limited to how long?
10 min
After an aborted start …
… the engine must be dry-motored for 30 sec
How many consecutive engine start cycles are allowed?
After that how long of a cooling period is needed?
3 consecutive start cycles allowed followed by a cooling period of 15 minutes
What is the max temp for engine start at which pressure altitude?
at 0 feet: +50C
at 5,000’: +40C
at 10,000’: +30C
at 15,000’: +20C
Max engine cranking time followed by how much cooling time?
Max 5 min cranking followed by 15 min cooling
Thrust reversers are limited to:
Ground Ops on paved surfaces.
Do not use in flight or to back up the aircraft.
Do not use for touch and go landings
Reverse thrust above idle is prohibted below 40 KIAS
Where does the APU obtain fuel for operation?
Right wing collector tank
APU Max ALT Operation
37,000’
APU Max Alt Generator
30,000’
Max Alt for using APU bleed air for engine start
20,000’
(Do not use the APU ON THE GROUND above 9,000’)
Max Alt for using APU bleed air for ECS
20,000’
While being de-iced or anti-iced …
… do not operate the APU.
Max Alt for APU start in flight / on the ground
30,000’ / 14,000’
When must the crew abort the APU start?
If after 30 sec the APU RPM is less than 30% (hung start)
In flight do not start the APU …
… above 285 KIAS
In flight, following an unsuccessful APU start, …
… do not attempt another start until after landing.
How often can you try to start the APU on the ground?
3 times, each followed by a 1min cooling period.
After the 3rd attempt: 20 min cooling period.
2 more start attempts, then a 40 min cooling period.
6 successive starts may be made at 10 min intervals, then 1h waiting
How is the APU bleed valve controlled?
By the APU ECU
Does any automatic action occur in flight in the event of an APU FIRE (other than the crew receiving an indication of it on the EICAS)
No
On the ground, how is the APU remotely shut down?
Remote cutoff switch is located right side, aft of wing, behind the external power access door
What are the purposes for the APU
Operating the gear-box mounted generator, air conditioning / pressurization and engine start
When accomplishing the APU fire emergency procedure, which bottle(s) should be discharged to the APU?
Bottle 2
When does the APU surge valve extract air from the APU?
When the load control valve is not open and air must be removed from the compressor to prevent compressor stall
What is the primary purpose of the APU load control valve?
To protect the APU from an over-temperatur condition
What is the limitation for left engine start on the ground using APU bleed air?
9000 ft
The APU bleed valve controls airflow to the aircraft bleed-air system and protects the APU from what?
Over-temperature condition
With both engine run switches OFF, both fuel pumps in the AUTO mode and the APU knob selected to RUN, what EICAS message should appear?
(cyan) R FUEL PUMP ON (A)
