737-400 has temperature control problem on approach. Maintenance checked but on next takeoff and initial climb, flight crew was unable to control cabin pressure.

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Attributes
ACN	309720
Time
Date	199505
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : dca
State Reference	DC
Altitude	msl bound lower : 16 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dca
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : takeoff climbout : initial climbout : intermediate altitude
Route In Use	enroute other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 12000 flight time type : 6000
ASRS Report	309720
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	none taken : unable other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Inbound to dca -- cockpit temperature controller ran away, full hot 130 degree F. Unable to control with temperature selector or trim air. Pulled and reset breakers, cleared problem, wrote up. Dca mechanics said there was a history on plane that right pack needed to be on MEL due to bite check. Called moc to double check MEL because cockpit is on left pack. Said ok. Departed to south from dca and right bleed tripped several times and we reset. Cabin climbing 1000 FPM -- passed through 5000 ft and unable to control cabin altitude -- went to standby and manual and closed outflow valve. Still climbing. Asked for lower or level off at 9000 ft. ATC said we must keep climbing to 11000 ft due to traffic. Leveled at 11000 ft. Cabin altitude horn went off at 10000 ft, reset -- cabin leveled off at 11000 ft and we were cleared for a slow descent into dca 500 FPM. Landed and checked east and east doors shut. Suspect forward outflow valve never closed at 2.5 psi.

Original NASA ASRS Text

Title: 737-400 HAS TEMP CTL PROB ON APCH. MAINT CHKED BUT ON NEXT TKOF AND INITIAL CLB, FLC WAS UNABLE TO CTL CABIN PRESSURE.

Narrative: INBOUND TO DCA -- COCKPIT TEMP CTLR RAN AWAY, FULL HOT 130 DEG F. UNABLE TO CTL WITH TEMP SELECTOR OR TRIM AIR. PULLED AND RESET BREAKERS, CLRED PROB, WROTE UP. DCA MECHS SAID THERE WAS A HISTORY ON PLANE THAT R PACK NEEDED TO BE ON MEL DUE TO BITE CHK. CALLED MOC TO DOUBLE CHK MEL BECAUSE COCKPIT IS ON L PACK. SAID OK. DEPARTED TO S FROM DCA AND R BLEED TRIPPED SEVERAL TIMES AND WE RESET. CABIN CLBING 1000 FPM -- PASSED THROUGH 5000 FT AND UNABLE TO CTL CABIN ALT -- WENT TO STANDBY AND MANUAL AND CLOSED OUTFLOW VALVE. STILL CLBING. ASKED FOR LOWER OR LEVEL OFF AT 9000 FT. ATC SAID WE MUST KEEP CLBING TO 11000 FT DUE TO TFC. LEVELED AT 11000 FT. CABIN ALT HORN WENT OFF AT 10000 FT, RESET -- CABIN LEVELED OFF AT 11000 FT AND WE WERE CLRED FOR A SLOW DSCNT INTO DCA 500 FPM. LANDED AND CHKED E AND E DOORS SHUT. SUSPECT FORWARD OUTFLOW VALVE NEVER CLOSED AT 2.5 PSI.

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.