OM4A (FCOM) Limitations Autoflight & Autopilot only 23DEC2023 Flashcards
A320/1 + NEO Autopilot Function: At Take off
100 ft AGL and at least 5s after liftoff
A320/1 + NEO Autopilot Function: In approach with FINAL APP, V/S or FPA mode when must the AP be disconnected by?
250ft AGL
A320/1 + NEO Autopilot Function: In circling approach, when must the AP be disconnected by? (CAT C and D)
500ft AGL for aircraft category C (600ft AGL for aircraft category D)
A320/1 + NEO Autopilot Function: ILS/MLS approach when CAT1 is displayed on the FMA, when must the AP be disconnected by?
160ft AGL
A320/1 + NEO Autopilot Function: ILS/MLS approach when CAT2 or CAT3 (single or dual) is displayed on the FMA, when must the AP be disconnected by? (Autoland)
0ft AGL if autoland
A320/1 + NEO Autopilot Function: After manual go-around, when can the AP be engaged?
100ft AGL
A320 Autopilot Function: In all other phases, when must the AP be disconnected by?
500ft AGL
A320 Autopilot Function: If AP or FD in OP DES or DES mode is used in the approach; what FCU altitude must be set?
The FCU selected altitude is set to or above the higher of the two: MDA/MDH or 500ft AGL
A321 + NEO Autopilot Function: In all other phases, when must the AP be disconnected by?
900ft AGL
A321 + NEO Autopilot Function: If AP or FD in OP DES or DES mode is used in the approach; what FCU altitude must be set?
The FCU selected altitude is set to or above the higher of the two: MDA/MDH or 900ft AGL
Navigation Performance: RNP accuracy with GPS PRIMARY is;
Degraded Situation: If GPS PRIMARY LOST is displayed on the ND and MCDU, is nagivation accuracy sufficient for RNP operations?
Use of NAV Mode: After Take Off, what must be checked?
Nav mode may be used after takeoff provided that:
-GPS PRIMARY is available, or
-The flight crew checked the FMGS takeoff updating
Use of NAV Mode: In Terminal Area, what must be checked to use NAV mode in the terminal area?
Nav mode may be used in terminal area provided that:
-GPS PRIMARY is available, or
-the appropriate RNP is checked or entered on the MCDU, and HIGH accuracy is displayed, or
-FMS Navigation is crosschecked with navaid raw data
Use of NAV Mode: Approach based on Radio Navaids
What must be used/referenced?
What FMA and automation requirements?
A navaids approach may be performed in NAV, APP NAV or FINAL APP with AP or FD engaged provided that:
-If GPS PRIMARY is available, the reference navaid may be unserviceable, or the airborne radio equipment may be inoperative, or not installed, provided that an operational approval is obtained
-If GPS PRIMARY is not available, the reference navaid and the corresponding airborne radio equipment must be serviceable, tuned and monitored during the approach.
Use of NAV Mode: RNAV Approach (without GPS PRIMARY?)
An RNAV(RNP) approach may be performed, with GPS PRIMARY not available, only if the radio navaid coverage supports the RNP value and HIGH accuracy is displayed on the MCDU with the specified RNP, and an operational approval is obtained.
An RNAV(GNSS) approach may be performed provided that GPS PRIMARY is available
Navigation Database Validation: To fly an approach in lateral managed mode or lateral and vertical managed mode, the approach stored in the Navigation database must be either:
-Produced by an approved supplier compliant with ED76/DO200A or DAT Type 2 requirements, or
‐ Validated and approved by the Operator.
RNAV(GNSS) approaches lateral trajectories are geometrically based on waypoints
coordinates. Thus, validating waypoints coordinates ensure no coding error on the approachand correct lateral trajectory.
Observed lateral track degree of difference between MCDU F-PLN page display and charts may come from inconsistency between…?
FMS Magnetic Variation and charted Magnetic Variation, which has no effect on lateral trajectory.
ILS Category II: Minimum Decision Height
100ft
ILS Category II Autoland: Autopilot Limitation
How many autopilots and what must be displayed on the FMA?
If manual landing, what is the AP disconnection height?
At least one autopilot must be engaged in APPR mode, and CAT 2 or CAT 3 SINGLE or CAT 3 DUAL must be displayed on the FMA.
For manual landing, AP should be disconnected no later than 80 ft AGL.
Special Authorization CAT II (SA CAT II): Minimum Decision Height
100ft
Special Authorization CAT II (SA CAT II): Autopilot Limitation, how many autopilots and what is displayed on the FMA?
At least one autopilot must be engaged in APPR mode, and CAT 2 or CAT 3 SINGLE or CAT 3 DUAL must be displayed on the FMA
ILS Category IIIA Fail Passive (Single): Minimum Decision Height
50ft
ILS Category III Fail Passive (Single -A) Autoland: Autothrust usage & Autopilot Limitation/FMA
A/THR must be used in selected or managed speed.
At least one autopilot must be engaged in APPR mode, and CAT 3 SINGLE or CAT 3 DUAL must be displayed on the FMA
A321NEO
ILS Category IIIB Fail Operation (Dual): Alert Height, Autopilot, A/THR and Minimum Runway Visual Range
Alert Height: 100ft AGL
A/THR must be used in selected or managed speed.
Both autopilots must be engaged in APPR mode, and CAT 3 DUAL must be displayed on the FMA.
-CAT III without DH:
Minimum Runway Visual Range: 75m/75m/75m
A320
ILS Category III Fail Operational (Dual) Alert Height, Autopilot, Minimum Decision Height, Minimum Runway Visual Range
Alert height: 100 ft
A/THR must be used in selected or managed speed.
Both autopilots must be engaged in APPR mode, and CAT 3 DUAL must be displayed on the FMA.
CAT III with DH: Minimum Decision Height: 25 ft
CAT III without DH:Minimum Runway Visual Range: 75 m
New A320 (VFL, VFO, VFP, VFQ, VFT, VFU, VFV, VFX, VFY, XNJ, XNP, XNW, XSJ, YXQ, YXS, YXT, YXU, YXV, YXW)
and A321CEO
ILS Category III Fail Operational (Dual) Alert Height, Autopilot, Minimum Decision Height, Minimum Runway Visual Range
Alert height: 100 ft
A/THR must be used in selected or managed speed.
Both autopilots must be engaged in APPR mode, and CAT 3 DUAL must be displayed on the FMA.
CAT III with DH: Minimum Decision Height: 22 ft
CAT III without DH: Minimum Runway Visual Range: 75 m
A320
Engine Out: CAT II and CAT III Fail Passive Autoland
Configuration?
CAT II and CAT III fail passive autoland are only approved in configuration FULL, and if engine-out procedures are completed before reaching 1 000 ft in approach.
A321CEO + A321NEO
Engine Out: CAT II and CAT III Fail Passive Autoland
Configuration?
CAT II and CAT III fail passive autoland are only approved in configuration 3 and FULL, and if engine-out procedures are completed before reaching 1 000 ft in approach
A321NEO (OFP, OFQ, OFS, OFU, OFV)
GLS Category I: Minimum Decision Height & Autopilot for automatic landings?
Minimum decision height: 200 ft
Without automatic landing:
At least one autopilot must be engaged in APPR mode, and CAT 1 or AUTOLAND must be displayed on the FMA.
With automatic landing:
At least one autopilot must be engaged in APPR mode, and AUTOLAND must be displayed on the FMA
What is the Alert Height?
The height below which an autoland may be continued with a failure provided the autoland light
does not illuminate. For the A320/1 this height is 100 ft (RA)
What is the Autoland light? When should you continue or go around?
When the aircraft cannot complete an automatic landing due to either internal and external factors.
CONTINUE. – If you are visual, and it is safe to do so, you can continue the approach by taking over manually.
GO AROUND. – If it is unsafe to continue or you have no visual reference, then you must perform an immediate go around.
It is important to know that even if you are visual, you cannot let the aircraft carry on to an auto land.
