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A B767-300ER preflight inspection was accomplished incorrectly and fan blade damage was missed on left and right engines.
| Attributes | |
| ACN | 628263 |
| Time | |
| Date | 200408 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Controlling Facilities | tower : anc.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 628263 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| 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 : 2 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other other Other |
| Factors | |
| Maintenance | contributing factor : work cards contributing factor : lighting performance deficiency : scheduled maintenance performance deficiency : non compliance with legal requirements performance deficiency : logbook entry performance deficiency : inspection performance deficiency : repair |
| Supplementary | |
| Problem Areas | Environmental Factor Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
I performed a preflight inspection on airline B767 at ZZZ airport at gate. The previous night on aug/thu/04, I inspected and svced #1 engine. At that time I observed no damage to the fan blades on #1 engine. Aircraft was towed from gate xy to remote parking. The next morning aircraft was towed from remote parking to gate xx. At that time I performed a predep walkaround aircraft and engines and again observe no damage to fan section of both engines. About 1/2 hour before aircraft departure maintenance observed fan blade damage to both #1 and #2 engine fan blades -- maintenance dressed both fan blades and damage was within maintenance manual limits and released aircraft for scheduled flight. Perhaps lighting and aircraft being towed 2 times to remote parking and back to gate xy. Also perhaps I was too lax on my walkaround inspection because I worked overnight check on this aircraft the previous night.
Original NASA ASRS Text
Title: A B767-300ER PREFLT INSPECTION WAS ACCOMPLISHED INCORRECTLY AND FAN BLADE DAMAGE WAS MISSED ON L AND R ENGS.
Narrative: I PERFORMED A PREFLT INSPECTION ON AIRLINE B767 AT ZZZ ARPT AT GATE. THE PREVIOUS NIGHT ON AUG/THU/04, I INSPECTED AND SVCED #1 ENG. AT THAT TIME I OBSERVED NO DAMAGE TO THE FAN BLADES ON #1 ENG. ACFT WAS TOWED FROM GATE XY TO REMOTE PARKING. THE NEXT MORNING ACFT WAS TOWED FROM REMOTE PARKING TO GATE XX. AT THAT TIME I PERFORMED A PREDEP WALKAROUND ACFT AND ENGS AND AGAIN OBSERVE NO DAMAGE TO FAN SECTION OF BOTH ENGS. ABOUT 1/2 HR BEFORE ACFT DEP MAINT OBSERVED FAN BLADE DAMAGE TO BOTH #1 AND #2 ENG FAN BLADES -- MAINT DRESSED BOTH FAN BLADES AND DAMAGE WAS WITHIN MAINT MANUAL LIMITS AND RELEASED ACFT FOR SCHEDULED FLT. PERHAPS LIGHTING AND ACFT BEING TOWED 2 TIMES TO REMOTE PARKING AND BACK TO GATE XY. ALSO PERHAPS I WAS TOO LAX ON MY WALKAROUND INSPECTION BECAUSE I WORKED OVERNIGHT CHK ON THIS ACFT THE PREVIOUS NIGHT.
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.