Airbus Policy on Selection of Thrust Reversers

Airbus policy on selection of thrust reversers on SA and LR

Following reverser failures

OLM FBW 2008 Amman October 2008OLM FBW 2008 Amman October 2008A320 Family A330/A340 Operational Liaison Meeting 2008

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2Airbus policy on selection of thrust reversers

4 Training recommendations

3 Reminder on operational impacts

Contents

5 Conclusion

2 Reverse thrust selection policy

1 Background

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Contents

5 Conclusion


1 Background

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Background

Runway excursion events at landing due to mishandling of thrust levers, following a dispatch with one thrust

reverser deactivated

Two main types of mishandling after touchdown:Both thrust levers in REV, then one to CLB or TOGA

One thrust lever remains in CLBOR

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Background

Since April 2006: Simplification of MMEL- procedure: Recommended to use ALL reversers, unless all reversers deactivated

Since April 2006: For A320 Family aircraftSince June 2006: Extended to all Airbus aircraft types

For MMEL- case: Symmetric selection of thrust reverser levers

AIRBUS

M M E L

MMEL with reverser deactivated:

Before April 2006 on A320 : Recommended NOT to select reverse thrust on affected engine

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Background

FOT 999.0108/07: Reminder on MMEL recommendation AIRBUSM M E

L

Airline question:What if in-flight failure leading to inoperative reverser?

Following recent accident (July 2007):

Todays presentation: latest update of the Airbus policy, including in-flight failure impacting reverser status

ENG REVERSE UNLOCKED ENG FAIL HYD G+B SYS LO PR ELEC DC BUS 1+2 FAULT

For example:

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Contents

5 Conclusion


1 Background

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Reverser Selection Policy

A simple and common policy Same procedure for

MMEL dispatch, and In-flight failures

At least one reverser operative: Select ALL thrust reversers


Airbus general recommendation is:All reversers inoperative and/or de-activated:

Do NOT select thrust reversers All reversers inoperative and/or de-activated:

Do NOT select thrust reversers

Always symmetric selection of thrust reverser levers

AIRBUS

M M E L

Same procedure for Rejected Take Off (RTO) and for landing

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No benefit of selecting the reversers Be prepared (dedicated briefing for RTO) Retard thrust levers to Idle Importance of arming the ground spoilers

To ensure extension of ground spoilers and autobrake activation

All reversers inoperative and/or de-activated: Do NOT select thrust reversers

All reversers inoperative and/or de-activated: Do NOT select thrust reversers


At least one reverser operative: Select ALL thrust reversers Procedure consistent with Standard Operating Procedure

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select ALL thrust reversersselect ALL thrust reversersDo NOT select thrust reverser

On the affected engine

Do NOT select thrust reverserOn the affected engine

AIRBUS

M M E L

APPROACH BRIEFING: Apply MMEL (o) procedure

MEL dispatch : ENG x REV deactivated AND Then in flight on the same engine: ENG x REVERSE UNLOCKED caution

IF

1 exception for landing : SA aircraft with CFM or IAE engines

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Recent FCTM revision (July 2008): recommendation on the reverser selection when reverser(s) is inoperative (covering in-flight failures and MEL dispatch)

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Contents

5 Conclusion


1 Background

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Reminder on operational impacts

Although all thrust levers are selected during thrust reversers application, the affected reverser is inoperative.

Reminder of operational impacts: 1 - ECAM effect at reverser selection 2 - Landing distance impacted 3 - Lateral control considerations 4 - Maintenance action or MEL entry for next flight

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No green REV indication (amber or no indication) Callout NO REVERSE ENGINE x

1 - ECAM effect at reverser selection

ENG 2 REV FAULT ENG x REV FAULT alert may appear

As reminder only, no further action required

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2 - Landing distance impacted

50ft

Apply the landing distance factor provided in the QRH

APPROACH WITH FAILURES - OLM 2008

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3 Be prepared for lateral control

Crosswind limitations for automatic rollout (depending on aircraft type) remain applicable:

Apply the usual FCTM and FCOM-SOP techniques for lateral control:

FCOM SOP:

Example : A320 FCOM 3.01.22:

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4 - Maintenance action or MMEL entry for next flight

MMEL

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Contents

5 Conclusion


1 Background

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Training recommendations

BRIEFING:Highlight importance of briefing: Focus the unusual => not a litany

Review the reversers status Brief the thrust reverser selection and associated display

Guidelines for Flight Crew Training Centers

In case of One reverser inoperative:

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Training recommendations

TRAINING : FOT (10 Oct 2007): Training recommendation on Dispatch with One Thrust

Reverser Deactivated

Airbus recommends to reinforce flight crew training (initial and recurrent) for situations of dispatch with one thrust reverser deactivated and/or for situations with failure leading to inoperative thrust reverser.

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Contents

5 Conclusion


1 Background

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Conclusion

9 Airbus wants to PROMOTE SYMMETRIC USE of the thrust levers to avoid risk of runway excursions (due to thrust lever mishandling).

9 CREW BRIEFING is a KEY FACTORfor correct thrust lever management in unusual situations.

AT LEAST ONE REVERSER OPERATIVE ?

Select ALL thrust reversersSelect ALL thrust reversers Do NOT select thrust reversersDo NOT select thrust reversers

AIRBUS

M M E L

YES NO

Airbus policy on selection of thrust reversers on SA and LRFollowing reverser failuresContentsContentsBackgroundBackgroundBackgroundContentsReverser Selection PolicyReverser Selection PolicyReverser Selection PolicyReverser Selection PolicyContentsReminder on operational impactsReminder on operational impactsReminder on operational impactsReminder on operational impactsReminder on operational impactsContentsTraining recommendationsTraining recommendations ContentsConclusion

Documents

Airbus Policy on Selection of Thrust Reversers