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1.16.1. Ground test to locate the problem ................................................................. 29
1.16.2. Release to service of the aircraft ..................................................................... 30
1.16.3. Inspection of the master cylinder S/N H2121 .................................................. 31
1.16.4. Inspection of the dual valve (BDDV) S/N H2718 ............................................. 33
1.16.5. Additional testing of the master cylinder S/N H2121 ...................................... 33
1.16.6. Inspection of the pedal cover .......................................................................... 33
1.17. Organizational and management information ................................................................ 34
Technical report IN-062/2002
vi
1.17.1. Technical flight records of the aircraft ............................................................ 34
1.18. Additional information ................................................................................................... 35
1.18.1. Telex to the operators issued by Airbus Industrie ............................................ 35
1.18.2. History of similar cases .................................................................................... 36
1.18.3. Other safety actions carried out by the manufacturer of the aircraft .............. 37
1.19. Useful or effective investigation techniques ................................................................... 37
2. Analysis ................................................................................................................................. 39
2.1. Operation during the Madrid-Tenerife flight .................................................................. 39
2.2. Maintenance actions in Tenerife Norte .......................................................................... 40
2.3. Operation during the flight Tenerife Norte-Madrid-Barajas ............................................ 41
2.4. Actions after the aircraft came to a stop ....................................................................... 45
2.5. Origin of the residual pressure ....................................................................................... 45
2.6. Previous history of residual pressure .............................................................................. 46
2.7. Suitability of the operational procedures ........................................................................ 50
3. Conclusions ............................................................................................................................ 53
3.1. Findings .......................................................................................................................... 53
3.2. Causes ........................................................................................................................... 54
4. Safety recommendations ...................................................................................................... 55
Appendices ................................................................................................................................... 57
Appendix A. Diagram of tracks on runway 33 of Madrid-Barajas Airport ............................... 59
Appendix B. Details of the trouble shooting procedure applied after the incident ................. 63
vii
Technical report IN-062/2002
Abbreviations
00 °C Degrees Celsius
00° 00’ 00’ Degrees, minutes and seconds
AENA «Aeropuertos Españoles y Navegación Aérea», provider of ATC and airport services
AGL Above Ground Level
AMM Aircraft Maintenance Manual
ATC Air Traffic Control
bar Bar, unit of pressure
BDDV Brake Distribution Dual Valve
BITE Built-in test
BSCU Brake & Steering Control Unit
CMM Component Maintenance Manual (i.e. of a master cylinder, valve, etc.)
CMS Central Maintenance System
CVR Cockpit Voice Recorder
DFDR Digital Flight Data Recorder
DH Decision Height
DME Distance Measuring Equipment
E East
ECAM Engine and Crew Alerting Monitoring
FCOM Flight Crew Operating Manual
FOT Flight Operations Telex, communication of Airbus to the operators to inform on operational
issues
ft Feet
g Gravity acceleration
GPWS Ground Proximity Warning System
h: min: sec Hours, minutes, seconds
hPa Hectopascal
IAS Indicated airspeed
IFR Instrument Flight Rules
KCAS Knots of calibrated airspeed
kt Knots
Ibs Pounds
LRU Line Replaceable Unit
m Meter
mb Milibar
METAR Meteorological report
MHz Megahertzs
MLG Main landing gear (there are three legs in the MLG of the A-340: left, centre and right)
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