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A B737-800 on a routine gate inspection found horizontal stabilizer dent. Dent evaluated per the srm. Dent deferred. Later found dent out of deferral limits and required engineering approval.
| Attributes | |
| ACN | 658507 |
| Time | |
| Date | 200505 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance technician : 20 |
| ASRS Report | 658507 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance technician : 25 |
| ASRS Report | 658508 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far |
| Independent Detector | other other : 3 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : schedule pressure contributing factor : engineering procedure performance deficiency : non compliance with legal requirements performance deficiency : repair performance deficiency : logbook entry performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Chart Or Publication Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
I was called to the aircraft. I measured the dent dimensions; got paperwork from the mechanic; checked limits; it was out of limits; so I gave it to the lead technician to defer. Dent fell within all general conditions. Since the dent was already out of limits; I knew it would have to be deferred to continue service. In reading over the zones to get the proper inspection requirements; I failed to recognize that the dent also was out of limits per another paragraph which signifies a repair must be made or engineering must be involved.
Original NASA ASRS Text
Title: A B737-800 ON A ROUTINE GATE INSPECTION FOUND HORIZ STABILIZER DENT. DENT EVALUATED PER THE SRM. DENT DEFERRED. LATER FOUND DENT OUT OF DEFERRAL LIMITS AND REQUIRED ENGINEERING APPROVAL.
Narrative: I WAS CALLED TO THE ACFT. I MEASURED THE DENT DIMENSIONS; GOT PAPERWORK FROM THE MECH; CHKED LIMITS; IT WAS OUT OF LIMITS; SO I GAVE IT TO THE LEAD TECHNICIAN TO DEFER. DENT FELL WITHIN ALL GENERAL CONDITIONS. SINCE THE DENT WAS ALREADY OUT OF LIMITS; I KNEW IT WOULD HAVE TO BE DEFERRED TO CONTINUE SVC. IN READING OVER THE ZONES TO GET THE PROPER INSPECTION REQUIREMENTS; I FAILED TO RECOGNIZE THAT THE DENT ALSO WAS OUT OF LIMITS PER ANOTHER PARAGRAPH WHICH SIGNIFIES A REPAIR MUST BE MADE OR ENGINEERING MUST BE INVOLVED.
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.