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A line mechanic was informed he failed to secure an upper pylon panel on a B737-900 aircraft after completion of a engine/pylon harness inspection. A passenger had noticed an upper pylon panel had 'bounced' during their pushback from the gate and informed the flight attendant. Aircraft returned to gate and panel secured.
| Attributes | |
| ACN | 963074 |
| Time | |
| Date | 201107 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B737-900 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Pylon Fasteners & Latches |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Experience | Maintenance Technician 5 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural FAR Deviation - Procedural Published Material / Policy |
Narrative:
Working B737-900 aircraft during #2 service check; [pylon] panels and engine cowlings were removed for [access to] the left and right harness sense connectors and wire inspection. Once inspection was completed; panels and cowlings were ok'd to re-install. I started on right side [of engine] and installed panels and cowlings; than moved to the left side and closed opened panels and cowlings on that side. On the following day; I was notified that aircraft had a gate return due to the panel having loose fasteners. Participated in a fact finding and reviewed computer-based maintenance training (cbt) and videos.
Original NASA ASRS Text
Title: A Line Mechanic was informed he failed to secure an upper pylon panel on a B737-900 aircraft after completion of a Engine/Pylon Harness Inspection. A passenger had noticed an upper pylon panel had 'bounced' during their pushback from the gate and informed the Flight Attendant. Aircraft returned to gate and panel secured.
Narrative: Working B737-900 aircraft during #2 Service Check; [pylon] panels and engine cowlings were removed for [access to] the left and right harness sense connectors and wire inspection. Once inspection was completed; panels and cowlings were OK'd to re-install. I started on right side [of engine] and installed panels and cowlings; than moved to the left side and closed opened panels and cowlings on that side. On the following day; I was notified that aircraft had a gate return due to the panel having loose fasteners. Participated in a fact finding and reviewed Computer-based Maintenance Training (CBT) and videos.
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.