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A lead mechanic describes how the left winglet of a B737-700 was damaged; as he towed the airplane into the hangar.
| Attributes | |
| ACN | 849822 |
| Time | |
| Date | 200908 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Winglet |
| Person 1 | |
| Function | Lead Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Experience | Maintenance Technician 19 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy Ground Event / Encounter Object |
Narrative:
Supervisor told me we were going to work an aircraft that was coming in with an MEL (#1 engine low bleed). I dropped two mechanics off at the plane to be taxied over to the hangar (bay 2). I opened up the bay-2 hangar doors and partially opened up bay-1 door; because with B737-700; you have to partially open the other bay door due to the extra wing width. I marshaled the plane in and hooked up the tug; being in a hurry; and everything being rush - so to say. I towed the aircraft into the hangar without wing walkers. The left winglet leading edge hit the bay-1 door (which was partially opened). Then I immediately stopped; backed up the plane a couple of feet; went over and opened the door more and towed the plane in the rest of the way. The leading edge of the winglet was dented. While two mechanics worked the engine; three of us removed and replaced (right & right) the winglet. There was no delay on the aircraft; it made its scheduled flight.
Original NASA ASRS Text
Title: A Lead Mechanic describes how the left winglet of a B737-700 was damaged; as he towed the airplane into the hangar.
Narrative: Supervisor told me we were going to work an aircraft that was coming in with an MEL (#1 engine low bleed). I dropped two Mechanics off at the plane to be taxied over to the Hangar (bay 2). I opened up the bay-2 Hangar doors and partially opened up bay-1 door; because with B737-700; you have to partially open the other bay door due to the extra wing width. I marshaled the plane in and hooked up the tug; being in a hurry; and everything being rush - so to say. I towed the aircraft into the hangar without Wing Walkers. The left winglet leading edge hit the bay-1 door (which was partially opened). Then I immediately stopped; backed up the plane a couple of feet; went over and opened the door more and towed the plane in the rest of the way. The leading edge of the Winglet was dented. While two Mechanics worked the engine; three of us removed and replaced (R & R) the Winglet. There was no delay on the aircraft; it made its scheduled flight.
Data retrieved from NASA's ASRS site as of April 2012 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.