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B737 flight crew reported that after landing; a major access panel beneath the aircraft was found open. Damage found to composite fairing aft of access panel.
| Attributes | |
| ACN | 1617360 |
| Time | |
| Date | 201902 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Service/Access Door |
| Person 1 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine |
| Experience | Flight Crew Total 6 |
| Person 2 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Total 18000 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
During the post-flight; the ground crew found the large access panel behind the right main landing gear hanging open. Inspection revealed that although the panel and hinges were undamaged; the composite fairing aft of the panel had several small holes where the attached support rod had made minor impact with the surface.the aircraft was taken out of service by [company] maintenance.the cause is unknown. However; due to the pristine condition of the panel; I believe it was unlikely that it opened until after landing. In order to cause the damage that it did; the prop rod had to bounce off the ground at significant speed; however.this aircraft was brand new. This panel only accesses the standby hydraulic pump. It is very unlikely that it needed to be opened since aircraft delivery. Is it possible that the 8 large adjustable latches were badly rigged from the factory; and the flex of the fuselage on landing allowed it to fall open?
Original NASA ASRS Text
Title: B737 flight crew reported that after landing; a major access panel beneath the aircraft was found open. Damage found to composite fairing aft of access panel.
Narrative: During the post-flight; the ground crew found the large access panel behind the right main landing gear hanging open. Inspection revealed that although the panel and hinges were undamaged; the composite fairing aft of the panel had several small holes where the attached support rod had made minor impact with the surface.The aircraft was taken out of service by [Company] Maintenance.The cause is unknown. However; due to the pristine condition of the panel; I believe it was unlikely that it opened until after landing. In order to cause the damage that it did; the prop rod had to bounce off the ground at significant speed; however.This aircraft was brand new. This panel only accesses the standby hydraulic pump. It is very unlikely that it needed to be opened since aircraft delivery. Is it possible that the 8 large adjustable latches were badly rigged from the factory; and the flex of the fuselage on landing allowed it to fall open?
Data retrieved from NASA's ASRS site 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.