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DHC8-100 captain experiences a high cabin altitude at FL240 with no associated cabin altitude warning. Flight descends to FL200 and cabin altitude descends below 8;000 ft.
| Attributes | |
| ACN | 1000676 |
| Time | |
| Date | 201203 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Dawn |
| Aircraft 1 | |
| Make Model Name | Dash 8-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Component | |
| Aircraft Component | Pressurization System |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
The first officer performed the cruise checklist when directed to. He noticed the differential pressure to be about 5.5 psi and the cabin altitude climbing past 10;000 ft at FL240. With no master warning or warning light we descended to FL200. The differential pressure lowered and the cabin altitude read below 8;000 ft.
Original NASA ASRS Text
Title: DHC8-100 Captain experiences a high cabin altitude at FL240 with no associated cabin altitude warning. Flight descends to FL200 and cabin altitude descends below 8;000 FT.
Narrative: The First Officer performed the cruise checklist when directed to. He noticed the differential pressure to be about 5.5 PSI and the cabin altitude climbing past 10;000 FT at FL240. With no master warning or warning light we descended to FL200. The differential pressure lowered and the cabin altitude read below 8;000 FT.
Data retrieved from NASA's ASRS site as of July 2013 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.