|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1801 To 2400|
|Locale Reference||airport : pdx|
|Altitude||msl bound lower : 0|
msl bound upper : 10000
|Controlling Facilities||artcc : zse|
|Operator||common carrier : air carrier|
|Make Model Name||Large Transport, Low Wing, 3 Turbojet Eng|
|Flight Phase||climbout : intermediate altitude|
|Affiliation||company : air carrier|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : atp|
pilot : commercial
pilot : instrument
|Experience||flight time last 90 days : 200|
flight time total : 6000
flight time type : 200
|Function||controller : radar|
|Qualification||controller : radar|
|Anomaly||aircraft equipment problem : less severe|
|Independent Detector||other flight crewa|
|Resolutory Action||flight crew : overcame equipment problem|
|Air Traffic Incident||other|
Lost pressurization on a flight from kpdx to kgeg. Had to maintain 10000' for the entire flight. Callback conversation with reporter revealed the following: on arrival pdx, a high differential duct pressure was written up. Maintenance determined that the right pack was at fault. It was rendered inoperative and MEL'd. On takeoff it was discovered that the left pack was inoperative. No pressurization was available and climb was stopped at 10000'.
Original NASA ASRS Text
Title: PRESSURIZATION SYSTEM FAILED.
Narrative: LOST PRESSURIZATION ON A FLT FROM KPDX TO KGEG. HAD TO MAINTAIN 10000' FOR THE ENTIRE FLT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: ON ARR PDX, A HIGH DIFFERENTIAL DUCT PRESSURE WAS WRITTEN UP. MAINT DETERMINED THAT THE RIGHT PACK WAS AT FAULT. IT WAS RENDERED INOP AND MEL'D. ON TKOF IT WAS DISCOVERED THAT THE LEFT PACK WAS INOP. NO PRESSURIZATION WAS AVAILABLE AND CLB WAS STOPPED AT 10000'.
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.