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Air carrier medium large transport cockpit door opened in flight periodically to allow air flow from cabin.
| Attributes | |
| ACN | 295812 |
| Time | |
| Date | 199502 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : zob |
| State Reference | OH |
| Altitude | msl bound lower : 31000 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob artcc : zme |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 18000 flight time type : 8500 |
| ASRS Report | 295812 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 300 flight time total : 17000 flight time type : 2000 |
| ASRS Report | 295916 |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : far other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Right pack temperature mix valve failed in full cold position. Right pack had to be shut down and left pack temperature turned up to try to heat rear cabin. This caused cockpit temperature to become excessive. Cockpit door had to be left in open position periodically to mix temperatures from front to rear and allow cockpit temperatures to cool.
Original NASA ASRS Text
Title: ACR MLG COCKPIT DOOR OPENED IN FLT PERIODICALLY TO ALLOW AIR FLOW FROM CABIN.
Narrative: R PACK TEMP MIX VALVE FAILED IN FULL COLD POS. R PACK HAD TO BE SHUT DOWN AND L PACK TEMP TURNED UP TO TRY TO HEAT REAR CABIN. THIS CAUSED COCKPIT TEMP TO BECOME EXCESSIVE. COCKPIT DOOR HAD TO BE LEFT IN OPEN POS PERIODICALLY TO MIX TEMPS FROM FRONT TO REAR AND ALLOW COCKPIT TEMPS TO COOL.
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.