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An L1011 was dispatched in non compliance with the main cabin cargo door warning deferred as inoperative in conflict with the MEL.
| Attributes | |
| ACN | 451466 |
| Time | |
| Date | 199910 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | L-1011 Tri-Star All Series |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : flight engineer |
| Experience | flight time last 90 days : 72 flight time total : 6000 flight time type : 1400 |
| ASRS Report | 451466 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance maintenance problem : non compliance with mel non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : cargo door warning |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : testing performance deficiency : repair performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Flight Crew Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
A malfunction of the main cabin cargo door lock indicating system was discovered. With the main cabin cargo door full open the forward door lock indicated locked the light was extinguished. The control panel lights were tested and the light check good. Maintenance dmi'ed the malfunction and a visual check was conducted as per the MEL. After take off the reference was checked in greater detail and was found to be improper for the type of malfunction. The crew felt the door was safe to continue the flight but believe the flight should not have departed because the MEL reference stated that a visual inspection should be made but only if the filament had failed (L1011 MEL 52-72-00 step 6). The malfunction should have been corrected prior to flight.
Original NASA ASRS Text
Title: AN L1011 WAS DISPATCHED IN NON COMPLIANCE WITH THE MAIN CABIN CARGO DOOR WARNING DEFERRED AS INOP IN CONFLICT WITH THE MEL.
Narrative: A MALFUNCTION OF THE MAIN CABIN CARGO DOOR LOCK INDICATING SYS WAS DISCOVERED. WITH THE MAIN CABIN CARGO DOOR FULL OPEN THE FORWARD DOOR LOCK INDICATED LOCKED THE LIGHT WAS EXTINGUISHED. THE CTL PANEL LIGHTS WERE TESTED AND THE LIGHT CHK GOOD. MAINT DMI'ED THE MALFUNCTION AND A VISUAL CHK WAS CONDUCTED AS PER THE MEL. AFTER TAKE OFF THE REF WAS CHKED IN GREATER DETAIL AND WAS FOUND TO BE IMPROPER FOR THE TYPE OF MALFUNCTION. THE CREW FELT THE DOOR WAS SAFE TO CONTINUE THE FLT BUT BELIEVE THE FLT SHOULD NOT HAVE DEPARTED BECAUSE THE MEL REF STATED THAT A VISUAL INSPECTION SHOULD BE MADE BUT ONLY IF THE FILAMENT HAD FAILED (L1011 MEL 52-72-00 STEP 6). THE MALFUNCTION SHOULD HAVE BEEN CORRECTED PRIOR TO FLT.
Data retrieved from NASA's ASRS site as of July 2007 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.