 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
B737 flight crew; while performing a post maintenance functional check flight; discovered the cabin pressure controller failed in all modes while testing the cabin altitude warning horn. A rapid descent was initiated and the flight returned to the departure airport.
| Attributes | |
| ACN | 1360375 |
| Time | |
| Date | 201606 |
| Aircraft 1 | |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Pressurization Control System |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
During a fcf (functional check flight) evaluation flight; while accomplishing the 'cabin altitude warning horn' fcf checklist; the pressurization controller appears to have malfunctioned in all modes (auto; alt and manual). The true aircraft diagnosis is still to be determined; as maintenance is working the problem. An expedited descent was accomplished; unfortunately the pax oxygen masks deployed during the descent.
Original NASA ASRS Text
Title: B737 flight crew; while performing a post maintenance functional check flight; discovered the cabin pressure controller failed in all modes while testing the cabin altitude warning horn. A rapid descent was initiated and the flight returned to the departure airport.
Narrative: During a FCF (Functional Check Flight) evaluation flight; while accomplishing the 'cabin altitude warning horn' FCF checklist; the pressurization controller appears to have malfunctioned in all modes (auto; alt and manual). The true aircraft diagnosis is still to be determined; as maintenance is working the problem. An expedited descent was accomplished; unfortunately the pax oxygen masks deployed during the descent.
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.