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Through a malfunction in the APU bleed valves overheated air damaged the cabin overhead warping doors. Maintenance taped closed the doors that would not stay closed and signed off or deferred the problems and released the aircraft as airworthy.
| Attributes | |
| ACN | 278146 |
| Time | |
| Date | 199407 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : grr |
| State Reference | MI |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 30 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : preflight |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 150 flight time total : 7000 flight time type : 500 |
| ASRS Report | 278146 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other other : unspecified |
| Resolutory Action | other |
| Consequence | other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
While on the ground at grr a combination of events allowed an overheating source of air into the interior of a dc-9- 31. The overheating air warped plastic overbins. The heat-warped doors would not stay closed and were taped shut per maintenance instructions after inspection by maintenance personnel and company maintenance coordinators. With all items written up by the maintenance personnel were written off by maintenance after noting and deferred. Preflight revealed the warped plastic interior. All areas in question were not safety of flight items. Apparently, the APU through a failure of valves and sensors allowed the air to enter the interior. The combination unknown at this time. The flight was uneventful, grr to stl as flight xx on air carrier xx jul/94.
Original NASA ASRS Text
Title: THROUGH A MALFUNCTION IN THE APU BLEED VALVES OVERHEATED AIR DAMAGED THE CABIN OVERHEAD WARPING DOORS. MAINT TAPED CLOSED THE DOORS THAT WOULD NOT STAY CLOSED AND SIGNED OFF OR DEFERRED THE PROBS AND RELEASED THE ACFT AS AIRWORTHY.
Narrative: WHILE ON THE GND AT GRR A COMBINATION OF EVENTS ALLOWED AN OVERHEATING SOURCE OF AIR INTO THE INTERIOR OF A DC-9- 31. THE OVERHEATING AIR WARPED PLASTIC OVERBINS. THE HEAT-WARPED DOORS WOULD NOT STAY CLOSED AND WERE TAPED SHUT PER MAINT INSTRUCTIONS AFTER INSPECTION BY MAINT PERSONNEL AND COMPANY MAINT COORDINATORS. WITH ALL ITEMS WRITTEN UP BY THE MAINT PERSONNEL WERE WRITTEN OFF BY MAINT AFTER NOTING AND DEFERRED. PREFLT REVEALED THE WARPED PLASTIC INTERIOR. ALL AREAS IN QUESTION WERE NOT SAFETY OF FLT ITEMS. APPARENTLY, THE APU THROUGH A FAILURE OF VALVES AND SENSORS ALLOWED THE AIR TO ENTER THE INTERIOR. THE COMBINATION UNKNOWN AT THIS TIME. THE FLT WAS UNEVENTFUL, GRR TO STL AS FLT XX ON ACR XX JUL/94.
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.