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A medium large transport was dispatched in non compliance with the left pneumatic valve locked closed with no deferral or logbook write-up.
| Attributes | |
| ACN | 560976 |
| Time | |
| Date | 200209 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : s46.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure sid : ns |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 560976 |
| 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 non adherence : far |
| Independent Detector | aircraft equipment other aircraft equipment : left duct press indicator other flight crewa other flight crewb |
| Resolutory Action | flight crew : diverted to another airport |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : logbook entry performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
After takeoff, the left duct pressure was low. Called maintenance to advise and was instructed to continue. Maintenance inspected the log and the left engine. I was told that the left engine bleed air valve was found locked closed. The aircraft was MEL'ed by maintenance and we flew flight. We adjusted our altitude en route to FL250 and turned off the left pack, not wanting to run 2 packs on 1 engine bleed. The paperwork after the turn was in order, indicating that the MEL had been issued. The problem comes from the condition of the bleed air valve and what was done to the left engine.
Original NASA ASRS Text
Title: A MEDIUM LARGE TRANSPORT WAS DISPATCHED IN NON COMPLIANCE WITH THE L PNEUMATIC VALVE LOCKED CLOSED WITH NO DEFERRAL OR LOGBOOK WRITE-UP.
Narrative: AFTER TKOF, THE L DUCT PRESSURE WAS LOW. CALLED MAINT TO ADVISE AND WAS INSTRUCTED TO CONTINUE. MAINT INSPECTED THE LOG AND THE L ENG. I WAS TOLD THAT THE L ENG BLEED AIR VALVE WAS FOUND LOCKED CLOSED. THE ACFT WAS MEL'ED BY MAINT AND WE FLEW FLT. WE ADJUSTED OUR ALT ENRTE TO FL250 AND TURNED OFF THE L PACK, NOT WANTING TO RUN 2 PACKS ON 1 ENG BLEED. THE PAPERWORK AFTER THE TURN WAS IN ORDER, INDICATING THAT THE MEL HAD BEEN ISSUED. THE PROB COMES FROM THE CONDITION OF THE BLEED AIR VALVE AND WHAT WAS DONE TO THE L ENG.
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.