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Mechanic reports on the results of reevaluating damage to the aft cargo door skin of a B737-800. Original damage measurement was accomplished at night; with only a flashlight; 12 inch ruler and depth gage and considered to be within the srm limits.
| Attributes | |
| ACN | 812806 |
| Time | |
| Date | 200810 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Night |
| 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 : powerplant technician : airframe |
| Experience | maintenance technician : 8 |
| ASRS Report | 812806 |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : improper documentation 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 : briefing contributing factor : tooling performance deficiency : logbook entry performance deficiency : non compliance with legal requirements performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
I received line call to re-evaluate damage to aft cargo door skin on log page. Measured dent and found to be within limit reference srm. Was notified that dent was re-measured per FAA request and was found to be out of allowable limits with no further action and actually in deferrable limits and placed on deferral status at that time. Met aircraft at gate and re-measured dent again and found to be 7 inches long and 3.2 inches wide and .0115 inches deep west/Y = 27.82 which is below the minimum of 30 but still within deferrable limits. Measured at night with flashlight and 12 inch ruler and tooling depth gauge has wide feet which are on top of 2 rows of rivets which are not flush with skin.
Original NASA ASRS Text
Title: MECHANIC REPORTS ON THE RESULTS OF REEVALUATING DAMAGE TO THE AFT CARGO DOOR SKIN OF A B737-800. ORIGINAL DAMAGE MEASUREMENT WAS ACCOMPLISHED AT NIGHT; WITH ONLY A FLASHLIGHT; 12 INCH RULER AND DEPTH GAGE AND CONSIDERED TO BE WITHIN THE SRM LIMITS.
Narrative: I RECEIVED LINE CALL TO RE-EVALUATE DAMAGE TO AFT CARGO DOOR SKIN ON LOG PAGE. MEASURED DENT AND FOUND TO BE WITHIN LIMIT REF SRM. WAS NOTIFIED THAT DENT WAS RE-MEASURED PER FAA REQUEST AND WAS FOUND TO BE OUT OF ALLOWABLE LIMITS WITH NO FURTHER ACTION AND ACTUALLY IN DEFERRABLE LIMITS AND PLACED ON DEFERRAL STATUS AT THAT TIME. MET ACFT AT GATE AND RE-MEASURED DENT AGAIN AND FOUND TO BE 7 INCHES LONG AND 3.2 INCHES WIDE AND .0115 INCHES DEEP W/Y = 27.82 WHICH IS BELOW THE MINIMUM OF 30 BUT STILL WITHIN DEFERRABLE LIMITS. MEASURED AT NIGHT WITH FLASHLIGHT AND 12 INCH RULER AND TOOLING DEPTH GAUGE HAS WIDE FEET WHICH ARE ON TOP OF 2 ROWS OF RIVETS WHICH ARE NOT FLUSH WITH SKIN.
Data retrieved from NASA's ASRS site as of May 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.