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Md-82 captain experiences a pressurization flow light at FL270 and declares an emergency requesting 10;000 feet as descent is initiated. The initial clearance is to FL240 and ATC is reminded of the emergency status. Manual control of the pressurization system is regained at 15;000 feet and flight continues to destination.
| Attributes | |
| ACN | 1170749 |
| Time | |
| Date | 201405 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | MD-82 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Pressurization System |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Total 18000 |
| Events | |
| Anomaly | ATC Issue All Types Aircraft Equipment Problem Less Severe |
Narrative:
At FL270...300 KIAS 1. Master caution - 'pressurization flow' with cabin climbing 2. Declared emergency and requested emergency descent to 10;000 feet. 3. ATC acknowledged. 4. Gave a clearance to FL240. 5. Which I replied; 'negative; we've begun emergency descent; request 10;000.' 6. ATC acknowledged 10;000... Heard a turn given to another aircraft of 40 degrees; TCAS did not show a below conflict. 7. During descent with QRH procedures we did manually regain cabin controller in standby and prevented cabin from exceeding 10;000 feet. 8. We requested 11;000 MSL for continued cruise on the arrival. And reported regaining normal operations 9. Multiple components of the pressurization system failed to initiate this event. Emergency descent is a trained response procedure and checking below on TCAS we expect turn guidance to clear traffic. A short descent of 3;000 feet would be an abrupt halt to an increasing speed and descent rate with speedbrakes deployed. West e appreciate all the help received from ATC.
Original NASA ASRS Text
Title: MD-82 Captain experiences a pressurization flow light at FL270 and declares an emergency requesting 10;000 feet as descent is initiated. The initial clearance is to FL240 and ATC is reminded of the emergency status. Manual control of the pressurization system is regained at 15;000 feet and flight continues to destination.
Narrative: At FL270...300 KIAS 1. Master Caution - 'Pressurization Flow' with cabin climbing 2. Declared emergency and requested emergency descent to 10;000 feet. 3. ATC acknowledged. 4. Gave a clearance to FL240. 5. Which I replied; 'Negative; we've begun emergency descent; request 10;000.' 6. ATC acknowledged 10;000... Heard a turn given to another aircraft of 40 degrees; TCAS did not show a below conflict. 7. During descent with QRH procedures we did manually regain cabin controller in standby and prevented cabin from exceeding 10;000 feet. 8. We requested 11;000 MSL for continued cruise on the arrival. And reported regaining normal operations 9. Multiple components of the pressurization system failed to initiate this event. Emergency descent is a trained response procedure and checking below on TCAS we expect turn guidance to clear traffic. A short descent of 3;000 feet would be an abrupt halt to an increasing speed and descent rate with speedbrakes deployed. W e appreciate all the help received from ATC.
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.