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A B737-800 autoplt stabilizer actuator was replaced and checked per the maintenance manual but did not have the FAA required inspection.
| Attributes | |
| ACN | 637181 |
| Time | |
| Date | 200411 |
| Day | Sun |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Dawn |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| ASRS Report | 637181 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| ASRS Report | 637184 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation non adherence : published procedure non adherence : far non adherence : company policies |
| Independent Detector | other other : 3 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : manuals contributing factor : work cards performance deficiency : non compliance with legal requirements performance deficiency : unqualified personnel performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Chart Or Publication |
| Primary Problem | Maintenance Human Performance |
Narrative:
I have become aware of a problem with the signoff on the installation of the stabilizer trim motor on aircraft X. I accomplished the removal and installation of a borrowed act. I accomplished an operations check per maintenance manual and short signature on the paperwork. Since I am not lower minimum performance [autoland] qualified to do a lower minimum performance signoff, I turned it over to a lower minimum performance mechanic. I was told today it needs an rii. Supplemental information from acn 637184: I was performing functional checks and was not aware that the stabilizer trim motor was considered rii. This motor has dual functions as an autoplt actuator and as a trim motor. The maintenance manual refers to this component as a motor, not an actuator. In the gpm it is unclr if this should be rii'ed because of the note in the flight control section.
Original NASA ASRS Text
Title: A B737-800 AUTOPLT STABILIZER ACTUATOR WAS REPLACED AND CHKED PER THE MAINT MANUAL BUT DID NOT HAVE THE FAA REQUIRED INSPECTION.
Narrative: I HAVE BECOME AWARE OF A PROB WITH THE SIGNOFF ON THE INSTALLATION OF THE STABILIZER TRIM MOTOR ON ACFT X. I ACCOMPLISHED THE REMOVAL AND INSTALLATION OF A BORROWED ACT. I ACCOMPLISHED AN OPS CHK PER MAINT MANUAL AND SHORT SIGNATURE ON THE PAPERWORK. SINCE I AM NOT LOWER MINIMUM PERFORMANCE [AUTOLAND] QUALIFIED TO DO A LOWER MINIMUM PERFORMANCE SIGNOFF, I TURNED IT OVER TO A LOWER MINIMUM PERFORMANCE MECH. I WAS TOLD TODAY IT NEEDS AN RII. SUPPLEMENTAL INFO FROM ACN 637184: I WAS PERFORMING FUNCTIONAL CHKS AND WAS NOT AWARE THAT THE STABILIZER TRIM MOTOR WAS CONSIDERED RII. THIS MOTOR HAS DUAL FUNCTIONS AS AN AUTOPLT ACTUATOR AND AS A TRIM MOTOR. THE MAINT MANUAL REFERS TO THIS COMPONENT AS A MOTOR, NOT AN ACTUATOR. IN THE GPM IT IS UNCLR IF THIS SHOULD BE RII'ED BECAUSE OF THE NOTE IN THE FLT CTL SECTION.
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.