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An A319 was dispatched from a contract maintenance station with the left landing light deferred as inoperative per the MEL. Light unit departed the aircraft damaging an under wing panel.
| Attributes | |
| ACN | 694445 |
| Time | |
| Date | 200604 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzzz.airport |
| State Reference | FO |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | A319 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance ground : takeoff roll |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 20000 flight time type : 2000 |
| ASRS Report | 694445 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : published procedure |
| Independent Detector | other other : 3 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | performance deficiency : logbook entry performance deficiency : repair |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
During routine overnight in ZZZZ; contract maintenance had placed left landing light on MEL. When company maintenance went to re-lamp light in ZZZ; mechanic found that lamp assembly had departed from aircraft while en route; causing minor damage to underside of wing. Airbus engineering had to be consulted since damaged area was made of composite material; located in a 'dry' segment of the wing. As a crew; we had assumed that; since the write-up stated that the light was simply 'inoperative;' the lamp was burned out; ZZZZ maintenance did not explain what; if anything; was done to attempt repair. Hence; we do not know why the light assembly was lost; but suspect faulty maintenance.
Original NASA ASRS Text
Title: AN A319 WAS DISPATCHED FROM A CONTRACT MAINT STATION WITH THE L LNDG LIGHT DEFERRED AS INOP PER THE MEL. LIGHT UNIT DEPARTED THE ACFT DAMAGING AN UNDER WING PANEL.
Narrative: DURING ROUTINE OVERNIGHT IN ZZZZ; CONTRACT MAINT HAD PLACED L LNDG LIGHT ON MEL. WHEN COMPANY MAINT WENT TO RE-LAMP LIGHT IN ZZZ; MECH FOUND THAT LAMP ASSEMBLY HAD DEPARTED FROM ACFT WHILE ENRTE; CAUSING MINOR DAMAGE TO UNDERSIDE OF WING. AIRBUS ENGINEERING HAD TO BE CONSULTED SINCE DAMAGED AREA WAS MADE OF COMPOSITE MATERIAL; LOCATED IN A 'DRY' SEGMENT OF THE WING. AS A CREW; WE HAD ASSUMED THAT; SINCE THE WRITE-UP STATED THAT THE LIGHT WAS SIMPLY 'INOP;' THE LAMP WAS BURNED OUT; ZZZZ MAINT DID NOT EXPLAIN WHAT; IF ANYTHING; WAS DONE TO ATTEMPT REPAIR. HENCE; WE DO NOT KNOW WHY THE LIGHT ASSEMBLY WAS LOST; BUT SUSPECT FAULTY MAINT.
Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.