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A saab 340A was returned to service without approved engineering authority/authorized for a broken compressor case stud.
| Attributes | |
| ACN | 380819 |
| Time | |
| Date | 199709 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz |
| State Reference | US |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | SF 340A |
| Operating Under FAR Part | Part 135 |
| Flight Phase | other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| ASRS Report | 380819 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : far non adherence : published procedure other anomaly other |
| Independent Detector | other other : unspecified |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
During replacement of l-hand engine ecu (engine control unit), the anti-ice start bleed valve was removed to facilitate maintenance. The stud on turbine case the valve attaches to broke off. As shift supervisor I was given turnover that engineering approval was forthcoming for an interim repair to this bracket. This approval would be good for 3 days until general electric could approve this repair or grant an extension until a permanent repair was available. I placed aircraft on short fuse watch item per maintenance operation manual for 3 days (until sep/xc/97) when general electric would finalize repair. Aircraft was approved for return to service early sep/xa/97. Upon reporting for duty sep/xb/97, I was informed the aircraft was grounded until general electric could give a repair scheme. The engineer who gave engineering authority/authorized was not powerplant approved. Therefore the aircraft was returned to service without a qualified individual approving the repair involved. I assumed the FAA form 8110-3 was applicable to the repair involved.
Original NASA ASRS Text
Title: A SAAB 340A WAS RETURNED TO SVC WITHOUT APPROVED ENGINEERING AUTH FOR A BROKEN COMPRESSOR CASE STUD.
Narrative: DURING REPLACEMENT OF L-HAND ENG ECU (ENG CTL UNIT), THE ANTI-ICE START BLEED VALVE WAS REMOVED TO FACILITATE MAINT. THE STUD ON TURBINE CASE THE VALVE ATTACHES TO BROKE OFF. AS SHIFT SUPVR I WAS GIVEN TURNOVER THAT ENGINEERING APPROVAL WAS FORTHCOMING FOR AN INTERIM REPAIR TO THIS BRACKET. THIS APPROVAL WOULD BE GOOD FOR 3 DAYS UNTIL GENERAL ELECTRIC COULD APPROVE THIS REPAIR OR GRANT AN EXTENSION UNTIL A PERMANENT REPAIR WAS AVAILABLE. I PLACED ACFT ON SHORT FUSE WATCH ITEM PER MAINT OP MANUAL FOR 3 DAYS (UNTIL SEP/XC/97) WHEN GENERAL ELECTRIC WOULD FINALIZE REPAIR. ACFT WAS APPROVED FOR RETURN TO SVC EARLY SEP/XA/97. UPON RPTING FOR DUTY SEP/XB/97, I WAS INFORMED THE ACFT WAS GROUNDED UNTIL GENERAL ELECTRIC COULD GIVE A REPAIR SCHEME. THE ENGINEER WHO GAVE ENGINEERING AUTH WAS NOT POWERPLANT APPROVED. THEREFORE THE ACFT WAS RETURNED TO SVC WITHOUT A QUALIFIED INDIVIDUAL APPROVING THE REPAIR INVOLVED. I ASSUMED THE FAA FORM 8110-3 WAS APPLICABLE TO THE REPAIR INVOLVED.
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.