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A 737-700 aircraft had a right wing fuel leak deferred referencing an incorrect maintenance procedure.
| Attributes | |
| ACN | 729206 |
| Time | |
| Date | 200702 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| ASRS Report | 729206 |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : improper documentation maintenance problem : non compliance with mel non adherence : published procedure non adherence : far |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Factors | |
| Maintenance | contributing factor : manuals performance deficiency : logbook entry |
| Supplementary | |
| Problem Areas | Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
A fuel leak on aircraft r-hand wing was idented as stain per maintenance manual. The technician assigned to the job was mr X and I was the lead on this aircraft. The item was deferred to be examined daily. A deferral was mentioned and I decided to use that deferral code. But further observation shows that option was if the leak shows progression. I should have observed the sentence after the word 'if.' no repair is necessary. Examine the fuel leak frequently (daily) to make sure it does not get larger. If; after a week; the leak has not progressed; the inspection interval can be increased to an 'a' check interval (deferral code).
Original NASA ASRS Text
Title: A 737-700 ACFT HAD A R WING FUEL LEAK DEFERRED REFERENCING AN INCORRECT MAINT PROCEDURE.
Narrative: A FUEL LEAK ON ACFT R-HAND WING WAS IDENTED AS STAIN PER MAINT MANUAL. THE TECHNICIAN ASSIGNED TO THE JOB WAS MR X AND I WAS THE LEAD ON THIS ACFT. THE ITEM WAS DEFERRED TO BE EXAMINED DAILY. A DEFERRAL WAS MENTIONED AND I DECIDED TO USE THAT DEFERRAL CODE. BUT FURTHER OBSERVATION SHOWS THAT OPTION WAS IF THE LEAK SHOWS PROGRESSION. I SHOULD HAVE OBSERVED THE SENTENCE AFTER THE WORD 'IF.' NO REPAIR IS NECESSARY. EXAMINE THE FUEL LEAK FREQUENTLY (DAILY) TO MAKE SURE IT DOES NOT GET LARGER. IF; AFTER A WK; THE LEAK HAS NOT PROGRESSED; THE INSPECTION INTERVAL CAN BE INCREASED TO AN 'A' CHK INTERVAL (DEFERRAL CODE).
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.