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An md-80 avionics mechanic believes he repositioned the #8 wire bundle correctly even though he misinterpreted the engineering order.
| Attributes | |
| ACN | 736406 |
| Time | |
| Date | 200704 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 736406 |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : engineering procedure performance deficiency : non compliance with legal requirements performance deficiency : installation |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
Upon deeper investigation of the existing aircraft wiring I have found that the large wire bundle under question is a #10. The engineering authority/authorized calls for the separation of any wires larger than a #8 into its own separate wrap then including the other bundle in the final wrap. I feel that I have correctly assembled the wires and; therefore; there's no violation of the regulations. On the engineering authority/authorized I unintentionally misinterped the instruction to separate 2 wire bundles and wrap the 8 wire bundle first then wrap the other bundle alongside it as 1 assembly and clamp them on the existing bracket. I did not separate the bundles and wrap 8 wire one separately.
Original NASA ASRS Text
Title: AN MD-80 AVIONICS MECHANIC BELIEVES HE REPOSITIONED THE #8 WIRE BUNDLE CORRECTLY EVEN THOUGH HE MISINTERPRETED THE ENGINEERING ORDER.
Narrative: UPON DEEPER INVESTIGATION OF THE EXISTING ACFT WIRING I HAVE FOUND THAT THE LARGE WIRE BUNDLE UNDER QUESTION IS A #10. THE ENGINEERING AUTH CALLS FOR THE SEPARATION OF ANY WIRES LARGER THAN A #8 INTO ITS OWN SEPARATE WRAP THEN INCLUDING THE OTHER BUNDLE IN THE FINAL WRAP. I FEEL THAT I HAVE CORRECTLY ASSEMBLED THE WIRES AND; THEREFORE; THERE'S NO VIOLATION OF THE REGS. ON THE ENGINEERING AUTH I UNINTENTIONALLY MISINTERPED THE INSTRUCTION TO SEPARATE 2 WIRE BUNDLES AND WRAP THE 8 WIRE BUNDLE FIRST THEN WRAP THE OTHER BUNDLE ALONGSIDE IT AS 1 ASSEMBLY AND CLAMP THEM ON THE EXISTING BRACKET. I DID NOT SEPARATE THE BUNDLES AND WRAP 8 WIRE ONE SEPARATELY.
Data retrieved from NASA's ASRS site as of January 2009 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.