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A B727-200 was operated with one attitude director repaired improperly. Instrument had wrong synchro motor installed.
| Attributes | |
| ACN | 414530 |
| Time | |
| Date | 199809 |
| Day | Tue |
| Local Time Of Day | 0001 To 0600 |
| 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 | B727-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| ASRS Report | 414530 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| ASRS Report | 414587 |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : published procedure non adherence : far |
| Independent Detector | other other : unspecified |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
On sep/xy/98 at approximately XA00, ADI xyz, serial number xzz was found to have a wrong part number for the B7 synchro in it. On mar/yx/90 I had repaired this unit, removed for 'face glass fogged.' in testing the unit, I noticed the motors were noisy and the delta was faded. I replaced the bearings on all 4 motors and painted the delta, cleaned the light wedge glass and final tested per job card none of the tests performed on this unit showed a problem with the B7 or any other synchro. If no problem exists with any synchro, no inspection or repair is needed.
Original NASA ASRS Text
Title: A B727-200 WAS OPERATED WITH ONE ATTITUDE DIRECTOR REPAIRED IMPROPERLY. INST HAD WRONG SYNCHRO MOTOR INSTALLED.
Narrative: ON SEP/XY/98 AT APPROX XA00, ADI XYZ, SERIAL NUMBER XZZ WAS FOUND TO HAVE A WRONG PART NUMBER FOR THE B7 SYNCHRO IN IT. ON MAR/YX/90 I HAD REPAIRED THIS UNIT, REMOVED FOR 'FACE GLASS FOGGED.' IN TESTING THE UNIT, I NOTICED THE MOTORS WERE NOISY AND THE DELTA WAS FADED. I REPLACED THE BEARINGS ON ALL 4 MOTORS AND PAINTED THE DELTA, CLEANED THE LIGHT WEDGE GLASS AND FINAL TESTED PER JOB CARD NONE OF THE TESTS PERFORMED ON THIS UNIT SHOWED A PROB WITH THE B7 OR ANY OTHER SYNCHRO. IF NO PROB EXISTS WITH ANY SYNCHRO, NO INSPECTION OR REPAIR IS NEEDED.
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.