 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
An air carrier B727-200 crew lost its cabin pressurization. Emergency declared, descent procedure emergency descent.
| Attributes | |
| ACN | 339511 |
| Time | |
| Date | 199606 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : bae |
| State Reference | WI |
| Altitude | msl bound lower : 20000 msl bound upper : 33000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau |
| Operator | common carrier : air carrier |
| Make Model Name | B727-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other other other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : flight engineer pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 4500 flight time type : 400 |
| ASRS Report | 339511 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer instruction : instructor |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 50 flight time total : 12500 flight time type : 2500 |
| ASRS Report | 339680 |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : declared emergency other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
Leveled off at 33000 ft. Cabin pressurization leveled off momentarily, but then kept climbing to above 10000 ft. The cabin alarm went off. I switched to manual control, but couldn't control pressurization. At that point we proceeded with emergency checklist and we started emergency descent. Descent went fine, rest of flight to landing went normal. 4 days earlier, the pressurization was doing the same thing and was written up by crew and fixed by maintenance. Captain was doing IOE and PF was an instructor captain. Lead flight attendant stuck her head in the cockpit as we started our emergency descent and I showed her the oxygen mask. Supplemental information from acn 339680: donned oxygen mask, disconnected the autoplt, extended the speed brakes, and started a shallow turn to the right away from the airway, and initiated an emergency descent. I declared an emergency and advised of the emergency descent.
Original NASA ASRS Text
Title: AN ACR B727-200 CREW LOST ITS CABIN PRESSURIZATION. EMER DECLARED, DSCNT PROC EMER DSCNT.
Narrative: LEVELED OFF AT 33000 FT. CABIN PRESSURIZATION LEVELED OFF MOMENTARILY, BUT THEN KEPT CLBING TO ABOVE 10000 FT. THE CABIN ALARM WENT OFF. I SWITCHED TO MANUAL CTL, BUT COULDN'T CTL PRESSURIZATION. AT THAT POINT WE PROCEEDED WITH EMER CHKLIST AND WE STARTED EMER DSCNT. DSCNT WENT FINE, REST OF FLT TO LNDG WENT NORMAL. 4 DAYS EARLIER, THE PRESSURIZATION WAS DOING THE SAME THING AND WAS WRITTEN UP BY CREW AND FIXED BY MAINT. CAPT WAS DOING IOE AND PF WAS AN INSTRUCTOR CAPT. LEAD FLT ATTENDANT STUCK HER HEAD IN THE COCKPIT AS WE STARTED OUR EMER DSCNT AND I SHOWED HER THE OXYGEN MASK. SUPPLEMENTAL INFO FROM ACN 339680: DONNED OXYGEN MASK, DISCONNECTED THE AUTOPLT, EXTENDED THE SPD BRAKES, AND STARTED A SHALLOW TURN TO THE R AWAY FROM THE AIRWAY, AND INITIATED AN EMER DSCNT. I DECLARED AN EMER AND ADVISED OF THE EMER DSCNT.
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.