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Flight crew of an medium large transport air carrier aircraft failed to follow the 'MEL' provisions covering an aircraft equipment discrepancy.
| Attributes | |
| ACN | 248267 |
| Time | |
| Date | 199308 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : iah |
| State Reference | TX |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | ground : preflight |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : flight engineer pilot : cfi |
| Experience | flight time last 90 days : 50 flight time total : 8500 flight time type : 1000 |
| ASRS Report | 248267 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 8000 |
| ASRS Report | 248320 |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : published procedure other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Prior to pushback, received 'left wing body overheat.' maintenance signed off the write-up by putting the warning system on MEL. We taxied out and left the left engine bleed on in error. The MEL requires it to be off except for engine start. The light re-illuminated. We went back to gate and wrote up the light. Again, mostly caused by our error. Aircraft signed off again, stating that the light staying on was a 'normal' indication for a faulty system. We took the flight, but 10 mins into the flight, the light went out. This led us to believe that the system might have actually had a leak after all.
Original NASA ASRS Text
Title: FLC OF AN MLG ACR ACFT FAILED TO FOLLOW THE 'MEL' PROVISIONS COVERING AN ACFT EQUIP DISCREPANCY.
Narrative: PRIOR TO PUSHBACK, RECEIVED 'L WING BODY OVERHEAT.' MAINT SIGNED OFF THE WRITE-UP BY PUTTING THE WARNING SYS ON MEL. WE TAXIED OUT AND LEFT THE L ENG BLEED ON IN ERROR. THE MEL REQUIRES IT TO BE OFF EXCEPT FOR ENG START. THE LIGHT RE-ILLUMINATED. WE WENT BACK TO GATE AND WROTE UP THE LIGHT. AGAIN, MOSTLY CAUSED BY OUR ERROR. ACFT SIGNED OFF AGAIN, STATING THAT THE LIGHT STAYING ON WAS A 'NORMAL' INDICATION FOR A FAULTY SYS. WE TOOK THE FLT, BUT 10 MINS INTO THE FLT, THE LIGHT WENT OUT. THIS LED US TO BELIEVE THAT THE SYS MIGHT HAVE ACTUALLY HAD A LEAK AFTER ALL.
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.