Airbus Policy on Selection of Thrust Reversers

Airbus policy on selection of thrust reversers Following reverser failures

OLV Air Asia - Kuala Lumpur - 20 - 24 September 2010

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May 2009 16th Performance and Operations conference

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 BackgroundBackground

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Background

• Runway excursion events at landing,not only on Airbus aircraft

due to mishandling of thrust levers, following , for instance, 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

For both scenarii : potential runway excursionpotential runway excursion

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Background

Since April 2006:

Symmetric selection of thrust reverse levers

AIRBUS

M M E L

• MMEL with reverser deactivated:

Before April 2006 : Recommended NOT to select reverse thrust

on affected engine

For A320 family/A330/A340/A380 Simplification of MMEL- procedure:

Select ALL reversers, unless all reversers deactivated Since April 2006: For A320 Family aircraft Since June 2006: Extended to all Airbus aircraft types

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Background

Since April 2006:

AIRBUS

M M E L

• MMEL with reverser deactivated (cont’d):

For A310/A300-600/B2/B4

Simplification of MMEL- procedure: Select First ALL reversers to Idle, then MAX REV only

on the operative side

(Due to failure cases* where the thrust lever cannot move beyond REV IDLE )

*:Depends on Engine type

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Background

AIRBUS

M M E L Today’s presentation: Recall of the Airbus policy,

including in-flight failure impacting reverser statusfor A320 Family/A330/A340/A380 *

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

A320 examples

* : Most of the examples are A320 examples, but principle also valid for LR and A380

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Background

• For A300/A310/A300-600:Specific presentation during the dedicated

A300/A310/A300-600 session :“Landing Procedure Enhancement “

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Contents

5 Conclusion

2 Reverse thrust selection policyReverse thrust selection policy

1 Background

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Reverser Selection Policy

• A simple and common policySame procedure for

– MMEL dispatch, and– In-flight failures

At least one reverser operative:

Select ALL thrust reversersAt least one reverser operative:

Select ALL thrust reversers

Airbus general recommendation is:

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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Common sense: 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



At least one reverser operative:

Select ALL thrust reversersAt least one reverser operative:

Select ALL thrust reversersProcedure consistent with Standard Operating Procedure

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• FCTM revision in 2008 (SA/LR:July 2008 ; A380:October 2008) recommendation on the reverser selection when reverser(s) is inoperative (covering in-flight failures and MEL dispatch)

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3 Reminder on operational impactsReminder on operational impacts

Contents

5 Conclusion


1 Background

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Reminder on operational impacts

• What are the operational consequences if you select all reversers while one reverser is inoperative ?

Reminder of operational impacts:1 - ECAM effect at reverser selection2 - Landing distance impacted3 - Lateral control considerations4 - 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

« LANDING DISTANCE WITH FAILURES » - PARIS 2009

Session 9 A320 Family/A330/A340

Refer to :

Landing Distance with failuresNew Landing Distance Factors

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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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4 Training recommendationsTraining recommendations


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 ConclusionConclusion


1 Background

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Conclusion

Airbus policy : SYMMETRIC USE of the thrust levers on

A320 Family/A330/A340/A380 to reduce risk of runway

excursions, following reverser failure

TRAINING and CREW BRIEFING are KEY FACTORS for correct thrust lever management in unusual situations.

WHEN AT LEAST ONE REVERSER

OPERATIVE



AIRBUS

M M E L

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Airbus Policy on Selection of Thrust Reversers

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