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Air carrier widebody transport with pressurization problem had to start descent before able obtain clearance.
| Attributes | |
| ACN | 104935 |
| Time | |
| Date | 198902 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : bda |
| State Reference | FO |
| Altitude | msl bound lower : 38400 msl bound upper : 39000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | enroute : atlantic enroute airway : a300 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 16000 flight time type : 650 |
| ASRS Report | 104935 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : critical altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : declared emergency flight crew : overcame equipment problem |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
We were at cruise and encountered some pressurization problems due to an engine bleed problem. We started a descent, then we were able to obtain control of cabin pressure. We leveled off at 38400'. We then got clearance from ny commercila radio to descend to FL370. The rest of the trip was uneventful. More effective communications would provide the traveling public with an added margin of safety. A high priority item in my estimation.
Original NASA ASRS Text
Title: ACR WDB WITH PRESSURIZATION PROBLEM HAD TO START DESCENT BEFORE ABLE OBTAIN CLRNC.
Narrative: WE WERE AT CRUISE AND ENCOUNTERED SOME PRESSURIZATION PROBS DUE TO AN ENG BLEED PROB. WE STARTED A DSCNT, THEN WE WERE ABLE TO OBTAIN CONTROL OF CABIN PRESSURE. WE LEVELED OFF AT 38400'. WE THEN GOT CLRNC FROM NY COMMERCILA RADIO TO DSND TO FL370. THE REST OF THE TRIP WAS UNEVENTFUL. MORE EFFECTIVE COMS WOULD PROVIDE THE TRAVELING PUBLIC WITH AN ADDED MARGIN OF SAFETY. A HIGH PRIORITY ITEM IN MY ESTIMATION.
Data retrieved from NASA's ASRS site as of August 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.