The flight station temperature approached 120 degrees fahrenheit following an aircraft malfunction with 1 operating pack. The pilots opened the flight station door to provide cooling air.

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Attributes
ACN	724475
Time
Date	200701
Place
Locale Reference	airport : oma.airport
State Reference	NE
Altitude	msl single value : 34000
Environment
Flight Conditions	VMC
Aircraft 1
Controlling Facilities	artcc : zau.artcc tower : mke.tower
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 200 flight time total : 17200 flight time type : 6700
ASRS Report	724475
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 180 flight time total : 10000 flight time type : 2500
ASRS Report	724764
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

We were dispatched with 1 pack inoperative. The operating pack was putting out extremely hot air into the cockpit. We tried adjusting every component of the pneumatic system without success. We contacted dispatch and maintenance and discussed options. The heat was unbearable. The equipment cooling light began to flicker as a result of the heat. I elected to leave the cockpit door open and raise the cabin barrier. I posted a flight attendant at the barrier and had our jumpseater guard the open door. Another flight attendant supplied us with water and wet towels to fool off. Prior to landing I closed the cockpit door and had the flight attendants retract the barrier. Once unpressurized; we turned the pack off. The cockpit temperature was probably around 120 degrees fahrenheit. The landing was without incident. Due to fatigue from the extreme temperature; this crew elected to go to the hotel and pick up the balance of our trip the next day.

Original NASA ASRS Text

Title: THE FLT STATION TEMP APCHED 120 DEGS FAHRENHEIT FOLLOWING AN ACFT MALFUNCTION WITH 1 OPERATING PACK. THE PLTS OPENED THE FLT STATION DOOR TO PROVIDE COOLING AIR.

Narrative: WE WERE DISPATCHED WITH 1 PACK INOP. THE OPERATING PACK WAS PUTTING OUT EXTREMELY HOT AIR INTO THE COCKPIT. WE TRIED ADJUSTING EVERY COMPONENT OF THE PNEUMATIC SYS WITHOUT SUCCESS. WE CONTACTED DISPATCH AND MAINT AND DISCUSSED OPTIONS. THE HEAT WAS UNBEARABLE. THE EQUIP COOLING LIGHT BEGAN TO FLICKER AS A RESULT OF THE HEAT. I ELECTED TO LEAVE THE COCKPIT DOOR OPEN AND RAISE THE CABIN BARRIER. I POSTED A FLT ATTENDANT AT THE BARRIER AND HAD OUR JUMPSEATER GUARD THE OPEN DOOR. ANOTHER FLT ATTENDANT SUPPLIED US WITH WATER AND WET TOWELS TO FOOL OFF. PRIOR TO LNDG I CLOSED THE COCKPIT DOOR AND HAD THE FLT ATTENDANTS RETRACT THE BARRIER. ONCE UNPRESSURIZED; WE TURNED THE PACK OFF. THE COCKPIT TEMP WAS PROBABLY AROUND 120 DEGS FAHRENHEIT. THE LNDG WAS WITHOUT INCIDENT. DUE TO FATIGUE FROM THE EXTREME TEMP; THIS CREW ELECTED TO GO TO THE HOTEL AND PICK UP THE BAL OF OUR TRIP THE NEXT DAY.

Data retrieved from NASA's ASRS site as of January 2009 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.