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A B727 failed to maintain pressurization during the departure climb. At FL270, the flight crew told ATC that they needed an immediate descent. When it became apparent that the descent clrncs were not going to keep the cabin from exceeding 10000 ft, the flight crew declared an emergency. Return land.
| Attributes | |
| ACN | 328502 |
| Time | |
| Date | 199602 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : atl |
| State Reference | GA |
| Altitude | msl bound lower : 27000 msl bound upper : 27000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B727-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute airway : ztl |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 15500 flight time type : 2500 |
| ASRS Report | 328502 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 100 flight time total : 5000 flight time type : 1000 |
| ASRS Report | 328720 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem flight crew : declared emergency flight crew : exited adverse environment other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
During climb after departing atl we could not control cabin rate of climb. Declared emergency and executed emergency descent procedure. Returned to departure airport -- atl. Initially ATC would not grant 10000 ft that we requested -- an emergency had to be declared to get below FL240. Callback conversation with reporter revealed the following information: the B727-200 flight crew was unable to keep the cabin down so they told ATC that they needed an immediate descent. ATC descent clearance was not as expedient as required so the captain declared an emergency in order to get down before the cabin exceeded 10000 ft. An irregularity report was filed with the company. The captain received a form letter in return which did not cite maintenance action. The captain would have liked to have known what caused the problem and states that this kind of response doesn't do much for morale.
Original NASA ASRS Text
Title: A B727 FAILED TO MAINTAIN PRESSURIZATION DURING THE DEP CLB. AT FL270, THE FLC TOLD ATC THAT THEY NEEDED AN IMMEDIATE DSCNT. WHEN IT BECAME APPARENT THAT THE DSCNT CLRNCS WERE NOT GOING TO KEEP THE CABIN FROM EXCEEDING 10000 FT, THE FLC DECLARED AN EMER. RETURN LAND.
Narrative: DURING CLB AFTER DEPARTING ATL WE COULD NOT CTL CABIN RATE OF CLB. DECLARED EMER AND EXECUTED EMER DSCNT PROC. RETURNED TO DEP ARPT -- ATL. INITIALLY ATC WOULD NOT GRANT 10000 FT THAT WE REQUESTED -- AN EMER HAD TO BE DECLARED TO GET BELOW FL240. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE B727-200 FLC WAS UNABLE TO KEEP THE CABIN DOWN SO THEY TOLD ATC THAT THEY NEEDED AN IMMEDIATE DSCNT. ATC DSCNT CLRNC WAS NOT AS EXPEDIENT AS REQUIRED SO THE CAPT DECLARED AN EMER IN ORDER TO GET DOWN BEFORE THE CABIN EXCEEDED 10000 FT. AN IRREGULARITY RPT WAS FILED WITH THE COMPANY. THE CAPT RECEIVED A FORM LETTER IN RETURN WHICH DID NOT CITE MAINT ACTION. THE CAPT WOULD HAVE LIKED TO HAVE KNOWN WHAT CAUSED THE PROB AND STATES THAT THIS KIND OF RESPONSE DOESN'T DO MUCH FOR MORALE.
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.