RNP AR Flashcards
TERR ON ND is mandatory on…
PF side.
CALLOUTS - LDEV 1/2 DOT
LAT-DEV
CALLOUTS - LDEV 1 DOT
GO-AROUND
CALLOUTS - VDEV 1/2 DOT
V-DEV
CALLOUTS - VDEV 3/4 DOT
GO-AROUND
The AP MUST be engaged for RNP AR
< 0.3 NM
What is the difference between RNAV AND RNP?
RNP requires an on-board performance monitoring and alerting system.
Graduation of the L/DEV scale on PFD
+/- 0.2 NM
One Dot deviation on V/DEV scale on PFD corresponds to:
100 ft
CALLOUTS - 1 DOT L/DEV
GO-AROUND
CALLOUTS - 3/4 DOT (75ft) V/DEV
GO-AROUND
Condition to accept DIR TO on an RNP AR
- Above MSA
- The following waypoint is NOT an RF leg
- The following waypoint is a TF leg and the RADIAL IN function is used
An RNP AR approach should be followed by a GO-AROUND if:
- FINAL APP does not engage
- Dual loss of FINAL APP
- GPS PRIMARY LOST on both NDs
- Loss of GPWS TERAIN or TERRAIN inconsistencies
- NAV ALT DISCREPANCY
- Dual AP failure
An RNP AR approach should be followed by a EXTRACTION if:
- Dual NAV ACCUR DOWNGRADE
- FM/GPS POSITION DISAGREE
- FMS1/FMS2 POS DIFF
- Dual loss of FMGC
CALLOUTS - ‘BANK’ if:
BANK ANGLE > 30°
CALLOUTS - ‘SINK RATE’ if:
VS > 1000 ft/min
RNAV approach with LNAV minima - discontinue the approach if:
- GPS PRIMARY LOST on both NDs
- XTK > 0.3NM
- NAV FM/GPS POS DISAGREE
- NAV ACCUR DOWNGRAD on both NDs
Note: be prepared to continue approach by reverting to NAV-FPA if vertical guidance is not satisfactory
RNAV approach with LNAV/VNAV minima - discontinue the approach if:
- GPS PRIMARY LOST on both NDs
- NAV FM/GPS POS DISAGREE
- NAV ACCUR DOWNGRAD on both NDs
- 75ft deviation BELOW vertical path (V/DEV > 3/4 dot)
- XTK > 0.3NM
SOP - before IAF
- PROG PAGE: Insert RNP value (smallest value for approach or missed approach)
SOP - before FAF, after reaching FAF altitude
(ABA)
- BARO REFT/ALTIMETER: CHECK (+/-75ft)
- APPR pb on FCU: PRESS
- APP NAV: CHECK ARMED or ENGAGED
- FINAL: CHECK ARMED
- GO AROUND ALTITUDE: SET
Approach may be continued after passing IAF in case of single failure:
- GPS (MMR)
- FMGS
- EFIS DU
- MCDU
- AP
- FINAL APP on one side
- GPS PRIMARY LOST on one side
- NAV ACCUR DOWNGRAD on one side
During approach - A ‘Dual NAV ACCUR DOWNGRADE’ should be followed by
EXTRACTION
During approach - In case of a ‘FM/GPS POSITION DISAGREE’, the flight crew should follow which procedure?
EXTRACTION
During approach - What should the pilots do in the case of ‘FMS1/FMS2 POS DIFF’
EXTRACTION
During approach - A ‘Dual loss of FMGC’ should be followed by
EXTRACTION
During approach - If FINAL APP does not engage the crew should perform…
GO-AROUND
During approach - In the case of ‘Dual loss of FINAL APP’, what procedure should be followed?
GO-AROUND
During approach - If ‘GPS PRIMARY LOST’ is displayed on both NDs, the flight crew…
Follows GO-AROUND procedure.
During approach - If the failure is a Loss of GPWS TERAIN or TERRAIN inconsistencies, what procedure should be followed?
GO-AROUND
During approach - If a ‘NAV ALT DISCREPANCY’ ECAM is displayed, what procedure should follow?
GO-AROUND
During approach - If you have a dual AP failure, what should you do?
GO-AROUND
RNP AR approach procedures are characterised by:
- RNP values <= 0.3NM
- Curved flight paths, before FAF or FAP
- Lateral protection areas of 2xRNP WITHOUT additional buffer
What type of vertical guidance is used in RNP AR approaches?
- FMS vertical navigation based on Baro-VNAV
Where can the pilot find information about True Track, GS and GPS accuracy level?
GPS MONITOR
APP NAV mode engagement conditions:
- NPA is selected
- FMS in APPROACH phase
- APPR pb is selected and NAV mode is engaged
- Aircraft above 400ft AGL
FINAL APP mode engagement conditions:
- APP NAV mode engaged (review conditions for engagement) (XTRACK < 1.5NM)
- FINAL mode ir armed (from below constraint altitude up to constraint altitude +150ft)
- DECEL point sequenced
Which dispatch considerations should be made if an RNP AR approach is intended?
- Review aircraft RNP AR certification status (MEL) and required equipment
- GPS PRIMARY availability (RAIM check) at ETA or ETD.
- Navigation database up-to-date
- WX forecast (OAT and winds)
- If required, destination alternate should have a conventional instrument approach
First action after passing first WPT on a GO AROUND:
PROG page - Clear RNP Value
GO AROUND - In case of ENGINE FAILURE
Bank angle is limited to 15°. If turn performance is insufficient, the pilot shall DISCONNECT AP and keep aircraft in the desired flight path.
Which indication shall be used for lateral Navigation monitoring and cross-track deviation callouts on RNAV approaches?
- ND X-TRACK indication
Which indication shall be used for lateral Navigation monitoring and cross-track deviation callouts on RNP-AR approaches?
- The LAT-DEV indications on PFD
