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A B7677-200 was dispatched in non compliance with the right engine pneumatic system deferred but the wrong valve locked out.
| Attributes | |
| ACN | 441939 |
| Time | |
| Date | 199906 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B767-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| ASRS Report | 441939 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| ASRS Report | 441940 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : non compliance with mel non adherence : far non adherence : published procedure |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : manuals contributing factor : schedule pressure performance deficiency : fault isolation performance deficiency : logbook entry performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Chart Or Publication Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
On jun/xa/99, mechanic uuz wyxx and myself were called out on aircraft xyz for a right engine bleed EICAS message. We had decided that one person will go bite the air supply box while the other person called technical services. I bite the air supply box and found a faulting right prsov. Mechanic uuz called technical services and told him of our findings. Uuz told me that technical services told him to placard the right prsov which I did. I locked out the right engine prsov. I was told by a crew chief in abc who reviewed the logbook today that there was a discrepancy with my procedure that when the aircraft flew to XXX from abc, the XXX mechanics found the wrong valve placarded and locked out. They then reinstated the right engine prsov and locked the right hpsov to properly comply with the MEL.
Original NASA ASRS Text
Title: A B7677-200 WAS DISPATCHED IN NON COMPLIANCE WITH THE R ENG PNEUMATIC SYS DEFERRED BUT THE WRONG VALVE LOCKED OUT.
Narrative: ON JUN/XA/99, MECH UUZ WYXX AND MYSELF WERE CALLED OUT ON ACFT XYZ FOR A R ENG BLEED EICAS MESSAGE. WE HAD DECIDED THAT ONE PERSON WILL GO BITE THE AIR SUPPLY BOX WHILE THE OTHER PERSON CALLED TECHNICAL SVCS. I BITE THE AIR SUPPLY BOX AND FOUND A FAULTING R PRSOV. MECH UUZ CALLED TECHNICAL SVCS AND TOLD HIM OF OUR FINDINGS. UUZ TOLD ME THAT TECHNICAL SVCS TOLD HIM TO PLACARD THE R PRSOV WHICH I DID. I LOCKED OUT THE R ENG PRSOV. I WAS TOLD BY A CREW CHIEF IN ABC WHO REVIEWED THE LOGBOOK TODAY THAT THERE WAS A DISCREPANCY WITH MY PROC THAT WHEN THE ACFT FLEW TO XXX FROM ABC, THE XXX MECHS FOUND THE WRONG VALVE PLACARDED AND LOCKED OUT. THEY THEN REINSTATED THE R ENG PRSOV AND LOCKED THE R HPSOV TO PROPERLY COMPLY WITH THE MEL.
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.