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A318/A319/A320/A321 FLEET OEB-OEB1-PLP-TOC P 2/2
FCOM 19 AUG 10
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
OPERATIONS ENGINEERING BULLETINS
ERRONEOUS RADIO ALTIMETER (RA) HEIGHT INDICATION
A318/A319/A320/A321 FLEET OEB-OEB1 P 1/6
FCOM 19 AUG 10
ERRONEOUS RADIO ALTIMETER (RA) HEIGHT INDICATION
Applicable to:
,
,
MSN,,,,
OEB1 Issue 1
ERRONEOUS RADIO ALTIMETER (RA) HEIGHT INDICATION - APPROVAL
Applicable to: ALL
This OEB covers a significant operational issue. Non-compliance with this OEB may have a
significant impact on the safe operation of the aircraft.
Therefore, Operators must distribute this OEB, or the information contained in this OEB, to all flight
crews without delay.
In addition, it is recommended that all Operators rapidly incorporate applicable corrective Service
Bulletins as soon as they become available.
Reason for issue: Issue 2
This OEB is revised to:
Further highlight that during ILS (‐ or MLS, GLS) approach with AP
engaged, in the event of an unexpected early THR IDLE and FLARE
modes engagement, the flight crew must immediately react to prevent
the angle-of-attack from increasing.
‐ Provide additional explanation of erroneous RA height indication
effects on Auto Flight System (AFS) and flight control law, in case of
Go-Around.
‐ Provide operational recommendation in case of Go-Around.
Issue 1
In follow-up to questions received from several Operators, the
objective of this OEB is to remind Operators of the possible operational
consequences of an erroneous Radio Altimeter (RA) height indication
Applicable to: All A318/A319/A320/A321 operators
Cancelled by: TBD
Note: The interchangeability code, given in the Illustrated Part Catalog (IPC), indicates the conditions for interchangeability
of equipment. After installation of corrective modification(s)/SB(s), if an Operator reinstalls any equipment affected by this
OEB, it is the Operator's responsibility to ensure that the recommendations given in this OEB are applied again for the
applicable aircraft.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
OPERATIONS ENGINEERING BULLETINS
ERRONEOUS RADIO ALTIMETER (RA) HEIGHT INDICATION
A318/A319/A320/A321 FLEET OEB-OEB1 P 2/6
FCOM 19 AUG 10
OEBs are issued by Airbus, as the need arises, to rapidly inform operators of any deviations from
initial design objectives that have a significant operational impact.
Airbus distributes OEBs to all FCOM holders.
The information in the OEB is recommended by Airbus, but may not be approved by Airworthiness
Authorities.
If the procedures contained in the OEB differ from the procedures in the AFM, the approved AFM
remains the reference.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
OPERATIONS ENGINEERING BULLETINS
ERRONEOUS RADIO ALTIMETER (RA) HEIGHT INDICATION
A318/A319/A320/A321 FLEET OEB-OEB1 P 3/6
FCOM 19 AUG 10
M Localization T DU Title DU identification DU date
OEB-OEB1 Erroneous Radio Altimeter (RA) Height
Indication
NG00991
OEB-OEB1 Erroneous Radio Altimeter (RA) height
indication - Approval
00011933.0001001 09 MAR 10
Criteria: SA
Applicable to: ALL
OEB-OEB1 Erroneous Radio Altimeter (RA) height
indication - Description
00011934.0001001 09 MAR 10
Criteria: SA
Applicable to: ALL
OEB-OEB1 Erroneous Radio Altimeter (RA) height
indication - Procedure
00011935.0001001 09 MAR 10
Criteria: SA
Applicable to: ALL
OEB-OEB1 Erroneous Radio Altimeter (RA) Height
Indication - Corrective Action
00012346.0001001 09 MAR 10
Criteria: SA
Applicable to: ALL
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
OPERATIONS ENGINEERING BULLETINS
ERRONEOUS RADIO ALTIMETER (RA) HEIGHT INDICATION
A318/A319/A320/A321 FLEET OEB-OEB1 P 4/6
FCOM 19 AUG 10
Applicable to: ALL
EXPLANATION
If an RA transmits erroneous height indication, this may have any of the following effects on
aircraft systems depending on the flight phase. However, these effects may not necessarily occur
in every case of an erroneous RA height indication.
On the Primary Flight Display (PFD):
The RA height indication (possibly negative) is frozen and ‐ appears in either amber or green
depending on the height
‐ Discrepancy between both PFDs (RA indications, FD orders, and if both AP engaged, PFD
FMAs)
On the System Display (SD):
‐ A pulsing Cabin Differential Pressure Advisory appears on CAB PRESS page (No consequence
on cabin pressure)
Warnings / Callouts:
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 5(94)
