airbus unreliable speeds

OLM FBW 2006 – Dubai – 13-15 March 2006

UNRELIABLE SPEEDLatest Improvements

Presented by

Sourya KAHLOULFlight Operations Engineer

Marie-Hélène COMBESFlight Operations Training Data Director

OLM FBW 2006 – Toulouse – 26-28 September 2006

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UNRELIABLE SPEED: LATEST IMPROVEMENTS 2

Introduction

UNRELIABLE SPEED procedure ADR CHECK procedure ?

Recall when pilots applied UNRELIABLE SPEED or ADR CHECK procedure

Why improvements were needed? What are these improvements?

How to help the airlines for the Training ?

Airlines concern was:

Or

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1

5 Backup Speed Scale: easier way to fly the aircraft

3 Procedure enhancement

2 How to deal with both procedures ?

Recall of the last procedure enhancements

Contents

6 e-briefing

7 Conclusion

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Common procedure for all Airbus Family:

1) Memory Itemsin a Black Box.

2) Level Off Step withPitch&thrust table.

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Recall of the last procedure enhancementsIF the troubleshooting is unsuccessful or all indications are unreliable:

Switch OFF 2 ADRs andfly the aircraft using

Pitch & Thrust tables.

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Contents

6 e-briefing

7 Conclusion

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How to deal with both procedures ?If Erroneous airspeed detected:UNRELIABLE SPEED or ADR CHECK PROC QRH procedure.

PreviousPrevious

Revision

Revision

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How to deal with both procedures ?

ADR CHECK PROCUNRELIABLE SPEED INDICATION

MEMORY ITEMS

LEVEL OFF

TROUBLESHOOTING

PITCH&THRUSTTABLES

REFER TOUNRELIABLE SPEED

FORTROUBLESHOOTING

NOSAFE CONDUCTOF THE FLIGHT

AFFECTED

Let’s see how to handle the situationon some examples…

Defined during

Defined during

TrainingTraining

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1st Scenario: erroneous speeds indications are detected betweenCAPT and F/O PFD, just after takeoff.

UNRELIABLE SPEED INDICATION

How to deal with both procedures ?

Unreliablespeed

MEMORY ITEMS

LEVEL OFF

TROUBLESHOOTING

PITCH&THRUSTTABLES

SAFE CONDUCTOF THE FLIGHT

AFFECTED

NOADR CHECK PROC


FORTROUBLESHOOTING

Scenario

1:

No needfor

improvement

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How to deal with both procedures ?2nd Scenario: speed between CAPT and F/O PFD starts to diverge,

while in climb.

Unreliablespeed


MEMORY ITEMS

LEVEL OFF

TROUBLESHOOTING

PITCH&THRUSTTABLES


AFFECTED

NOADR CHECK PROC


FORTROUBLESHOOTING

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How to deal with both procedures ?2nd Scenario: speed between CAPT and F/O PFD starts to diverge,

while in climb.

ADR CHECK PROC


FORTROUBLESHOOTING


MEMORY ITEMS

LEVEL OFF

TROUBLESHOOTING

PITCH&THRUSTTABLES

Scenario 2:

Needsome

improvement

Unreliablespeed

No need to applythe Memory Items

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How to deal with both procedures ?3rd Scenario: Just after takeoff :Pilots are applying Unreliable Speed,

while NAV ADR DISAGREE ECAM caution triggers.


MEMORY ITEMS

LEVEL OFF

TROUBLESHOOTING

PITCH&THRUSTTABLES


AFFECTED

NOADR CHECK PROC


FORTROUBLESHOOTING

Unreliablespeed

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MEMORY ITEMS

LEVEL OFF

TROUBLESHOOTING

PITCH&THRUSTTABLES


AFFECTED

How to deal with both procedures ?3rd Scenario: Just after takeoff :Pilots are applying Unreliable Speed,

while NAV ADR DISAGREE ECAM caution triggers.

Scenario 3:

Need some

improvements

Keep applyingthe Memory

Items!

Unreliablespeed

1500 FT

NAV ADRDISAGREE

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Contents

6 e-briefing

7 Conclusion

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Procedure enhancement

ADR CHECK PROCUNRELIABLE SPEED INDICATION

MEMORY ITEMS

LEVEL OFF

TROUBLESHOOTING

PITCH&THRUSTTABLES


FORTROUBLESHOOTING


AFFECTED

NO

UNRELIABLE SPEED INDIC / ADR CHECK PROC

Both proceduresgathered in asingle one:

Fromthis

Fromthis

Revision

Revision

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PITCH&THRUST TABLES



AFFECTED

TROUBLE SHOOTING

LEVEL OFF

MEMORY ITEMS

• If the safe conduct of the flight is affected:

• To level off for troubleshooting:

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MEMORY ITEMS

LEVEL OFF

TROUBLESHOOTING

PITCH&THRUSTTABLES

. If the safe conduct of the flight is affected:

. To level off for troubleshooting:

Fromthis

Fromthis

Revision

Revision

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Contents

6 e-briefing

7 Conclusion

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Backup Speed Scale: easier way to fly the aircraft

No need for Pitch& Thrust tables

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Backup Speed Scale: easier way to fly the aircraft

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Contents

6 e-briefing

7 Conclusion

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e-briefing: General

Main concerns to be covered in FCTM and e-briefing:

To facilitate the detection of the anomaly

To ensure correct application of the procedure– To ensure proper understanding the procedure structure

– To avoid any mistake when isolating the faulty ADR

– To describe the flying technique

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e-briefing: General

Symptoms / detection

Procedure

Critical situation Safe references immediately necessary

MEMORY ITEMS

Communicate with ATC to avoid anyconflict with other traffic

Not critical situation

Safe conduct of the flightis affected

When thingsdo not go as expected : Take over !

Pitch Attitude Thrust

&

+

Pitch Attitude ThrustThrust

&

+

Safe conduct of the flightis not affected

One pitot icing One Static blocked

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CLIMBCRUISE

DESCENT

APPROACHAFTER TAKEOFF

Scenarios

Proceduree-briefing: General

Critical situation Safe references immediately necessary

MEMORY ITEMS

Communicate with ATC to avoid anyconflict with other traffic

Troubleshouting


Safe conduct of the flightis affected

When thingsdo not go as expected : Take over !


&

+


&

+

Flying without any speed reference

Level off without any speed reference :

Safe conduct of the flightis not affected

If Faulty ADR not identified : If Faulty ADR identified :

Fly with remaining ADR

When thetroubleshooting

procedure did notpermit to identify

at least onecorrect indication

Isolate unreliableADR

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e-briefing: Detection of the anomaly

Common to all types of A/C

With or without BUSS

Our objective: To familiarize the crews with what could happen

Better than a lot of word: some videos

Symptoms / detection

One pitot icing One Static blocked

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e-briefing: Procedure application

To ensure proper understanding of procedure structureWhere to enter the procedure?

To avoid any mistake when isolating the faulty ADRavoid a trap

To describe the flying technique.

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Critical situation

Safe references immediately necessary

MEMORY ITEMS

Communicate with ATC to avoid any

conflict with other traffic

Troubleshouting


Safe conduct of the flight

is affected

When things do not go as expected : Take over !


&

+


&

+




is not affected



When the

troubleshooting

procedure did not

permit to identify

at least one

correct indication

Isolate unreliable

ADR

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Critical situation


MEMORY ITEMS



Troubleshouting



is affected



&

+


&

+




is not affected



When the

troubleshooting

procedure did not

permit to identify

at least one

correct indication

Isolate unreliable

ADR

Procedure application: Where to enter the procedure?

Safe conduct of the flightaffected

MEMORY ITEMS

&

Safe conduct of the flightnot affected

Level off (if required)

Trouble shooting

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Critical situation


MEMORY ITEMS



Troubleshouting



is affected



&

+


&

+




is not affected



When the

troubleshooting

procedure did not

permit to identify

at least one

correct indication

Isolate unreliable

ADR



Trouble shooting

Flying without any speed referenceFlying without any speed reference Back toBack to NORMNORM

MEMORY ITEMS

&

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Critical situation


MEMORY ITEMS



Troubleshouting



is affected



&

+


&

+




is not affected



When the

troubleshooting

procedure did not

permit to identify

at least one

correct indication

Isolate unreliable

ADR

e-briefing: Procedure application Avoid the trap


Trouble shooting

Scenario with two false identical indications

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Critical situation


MEMORY ITEMS



Troubleshouting



is affected



&

+


&

+




is not affected



When the

troubleshooting

procedure did not

permit to identify

at least one

correct indication

Isolate unreliable

ADR

e-briefing: Procedure application Flying technique


Trouble shooting

Flying without any speed referenceFlying without any speed reference

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e-briefing: Procedure application Flying technique

Maintain level flight

If FPV is reliable

Adjust thrust according to table

Observe the pitch

Video under development

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Contents

6 e-briefing

7 Conclusion

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“UNRELIABLE SPEED INDICATION / ADR CHECK”

Conclusion

The UNRELIABLE SPEED and ADR CHECK PROC are now gathered in asingle paper procedure called:

Conditions added in the procedure for :

Applying the Memory Items

Level off for troubleshooting faulty ADR / Use the Back-Up Speed Scale

Situation Awareness and procedure understanding are improved by the FCTMand the e-briefing

New Backup Speed Scale: Easier way to handle an Unreliable speed situation

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Backup Speed Scale: package

1) EIS 2 screen ,

2) ADIRU standard Honeywell AD 21, orLITTON 314,

3) FWC standards:

1) W5 for A340-500/600,

2) L11 for A340 basic,

3) K9 for A330,

4) F4 for the Single Aisle.

PACKAGE INCLUDING :

PACKAGE COVERED BY MODIFICATIONS:

• 35871 for Single Aisle (certification in 2007)

• 53368 for the Long Range (certification inJune 2006 for A340-500/600, September 2006for A330 and A340 ).

airbus unreliable speeds

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ensure proper

adr check

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backup speed

symptoms detection