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A B737-300 on arrival at gate were unable to open cabin doors due to cabin pressurized. 1 min after pack shutdown door could be opened.
| Attributes | |
| ACN | 523928 |
| Time | |
| Date | 200109 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 12181 flight time type : 3463 |
| ASRS Report | 523928 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : cabin altitude indicator other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
Cabin altitude indicated FL400. However, gate arrival doors would not open. With packs off, it took over 1 min to open the doors. Suspect pressure relief valve and automatic controller. While we tried to open the doors, the cabin climbed at 2000 FPM. Callback conversation with reporter revealed the following information: the reporter stated the cabin pressure system worked without problems all during the flight and failed when the aircraft was parked on the gate. The reporter said the cabin pressure controller on the overhead P-5 panel had failed.
Original NASA ASRS Text
Title: A B737-300 ON ARR AT GATE WERE UNABLE TO OPEN CABIN DOORS DUE TO CABIN PRESSURIZED. 1 MIN AFTER PACK SHUTDOWN DOOR COULD BE OPENED.
Narrative: CABIN ALT INDICATED FL400. HOWEVER, GATE ARR DOORS WOULD NOT OPEN. WITH PACKS OFF, IT TOOK OVER 1 MIN TO OPEN THE DOORS. SUSPECT PRESSURE RELIEF VALVE AND AUTOMATIC CONTROLLER. WHILE WE TRIED TO OPEN THE DOORS, THE CABIN CLBED AT 2000 FPM. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE CABIN PRESSURE SYS WORKED WITHOUT PROBS ALL DURING THE FLT AND FAILED WHEN THE ACFT WAS PARKED ON THE GATE. THE RPTR SAID THE CABIN PRESSURE CONTROLLER ON THE OVERHEAD P-5 PANEL HAD FAILED.
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.