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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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A B737-300 at 13000 ft had cabin pressure warning horn sound and cabin observed climbing. No automatic fail light. Caused by automatic pressure controller failure.
| Attributes | |
| ACN | 532005 |
| Time | |
| Date | 200111 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 13000 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 214 |
| ASRS Report | 532005 |
| 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 warning horn other flight crewa other flight crewb |
| Resolutory Action | flight crew : overcame equipment problem |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Aircraft |
Narrative:
At 13000 ft cabin altitude warning horn went off. The cabin was climbing at 1000 FPM. No automatic fail light on and the controller did not change to standby. Got a descent and manually switched to standby and the cabin came back under control.
Original NASA ASRS Text
Title: A B737-300 AT 13000 FT HAD CABIN PRESSURE WARNING HORN SOUND AND CABIN OBSERVED CLBING. NO AUTO FAIL LIGHT. CAUSED BY AUTO PRESSURE CTLR FAILURE.
Narrative: AT 13000 FT CABIN ALT WARNING HORN WENT OFF. THE CABIN WAS CLBING AT 1000 FPM. NO AUTO FAIL LIGHT ON AND THE CTLR DID NOT CHANGE TO STANDBY. GOT A DSCNT AND MANUALLY SWITCHED TO STANDBY AND THE CABIN CAME BACK UNDER CTL.
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.