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Md-11 crew operated the aircraft pneumatic system in non compliance with the MEL after contract mechanic told them to operate it in automatic. When wing anti-ice was needed it was unavailable.
| Attributes | |
| ACN | 600840 |
| Time | |
| Date | 200311 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzzz.airport |
| State Reference | FO |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | IMC |
| Light | Dawn |
| Aircraft 1 | |
| Controlling Facilities | tower : pit.tower |
| Operator | common carrier : air carrier |
| Make Model Name | MD-11 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : takeoff roll ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 8000 flight time type : 800 |
| ASRS Report | 600840 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : non compliance with mel maintenance problem : improper documentation non adherence : company policies non adherence : far non adherence : published procedure |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : testing performance deficiency : non compliance with legal requirements performance deficiency : logbook entry performance deficiency : repair performance deficiency : fault isolation |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Flight Crew Human Performance FAA Company Aircraft |
| Primary Problem | Company |
Narrative:
Prior to departure from ZZZZ on nov/sun/03, we were advised by maintenance that an air system write-up in the aircraft maintenance log (which would have required my crew to operate the air system in the manual mode) was entered in error. They advised us that the MEL did not address the true problem on board the aircraft, and that a complete description of the aircraft problem would be discussed with me and my crew in panc by the mechanic who had initiated the MEL in question. Until then, we were advised by maintenance to operate the aircraft with the air system in the automatic mode (against the procedures called for in the MEL) like 'all the other crews had operated.' my crew and I proceeded to panc, and during the descent to landing, we encountered icing conditions. After selecting the wing anti-ice system on, the left wing anti-ice disagreement light came on. We selected the system off, and tried to avoid any icing conditions, and made an uneventful landing on runway 6R at panc. After engine shutdown, a write-up was made in the aircraft maintenance log describing the event. The mechanic, in describing the corrective action taken, stated the air system was operated in automatic against the procedures called for in the MEL, and signed off the write-up.
Original NASA ASRS Text
Title: MD-11 CREW OPERATED THE ACFT PNEUMATIC SYS IN NON COMPLIANCE WITH THE MEL AFTER CONTRACT MECH TOLD THEM TO OPERATE IT IN AUTO. WHEN WING ANTI-ICE WAS NEEDED IT WAS UNAVAILABLE.
Narrative: PRIOR TO DEP FROM ZZZZ ON NOV/SUN/03, WE WERE ADVISED BY MAINT THAT AN AIR SYS WRITE-UP IN THE ACFT MAINT LOG (WHICH WOULD HAVE REQUIRED MY CREW TO OPERATE THE AIR SYS IN THE MANUAL MODE) WAS ENTERED IN ERROR. THEY ADVISED US THAT THE MEL DID NOT ADDRESS THE TRUE PROB ON BOARD THE ACFT, AND THAT A COMPLETE DESCRIPTION OF THE ACFT PROB WOULD BE DISCUSSED WITH ME AND MY CREW IN PANC BY THE MECH WHO HAD INITIATED THE MEL IN QUESTION. UNTIL THEN, WE WERE ADVISED BY MAINT TO OPERATE THE ACFT WITH THE AIR SYS IN THE AUTOMATIC MODE (AGAINST THE PROCS CALLED FOR IN THE MEL) LIKE 'ALL THE OTHER CREWS HAD OPERATED.' MY CREW AND I PROCEEDED TO PANC, AND DURING THE DSCNT TO LNDG, WE ENCOUNTERED ICING CONDITIONS. AFTER SELECTING THE WING ANTI-ICE SYS ON, THE L WING ANTI-ICE DISAGREEMENT LIGHT CAME ON. WE SELECTED THE SYS OFF, AND TRIED TO AVOID ANY ICING CONDITIONS, AND MADE AN UNEVENTFUL LNDG ON RWY 6R AT PANC. AFTER ENG SHUTDOWN, A WRITE-UP WAS MADE IN THE ACFT MAINT LOG DESCRIBING THE EVENT. THE MECH, IN DESCRIBING THE CORRECTIVE ACTION TAKEN, STATED THE AIR SYS WAS OPERATED IN AUTO AGAINST THE PROCS CALLED FOR IN THE MEL, AND SIGNED OFF THE WRITE-UP.
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.