A B737-300 on climb out at 7000 ft returns to the field due to unable to pressurize the cabin cause ...

Attributes
ACN	456955
Time
Date	199912
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : pit.airport
State Reference	PA
Altitude	msl single value : 7000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : pit.tracon
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Route In Use	departure : other published ifr departure
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 120 flight time total : 24000 flight time type : 6741
ASRS Report	456955
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : private pilot : atp
Experience	flight time last 90 days : 120 flight time total : 9000 flight time type : 1500
ASRS Report	456957
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : landed as precaution
Consequence	other
Supplementary
Problem Areas	Company Maintenance Human Performance Flight Crew Human Performance Aircraft Cabin Crew Human Performance
Primary Problem	Aircraft

Narrative:

On climb out from pittsburgh aircraft did not pressurize. After following procedures outlined in the QRH we were unable to establish pressurization. After contact with dispatch and maintenance the decision was made to return to pit for landing. We did not climb above 7000 ft, did not declare an emergency. Normal landing was made. Note: 13+ hour day did not help. Callback conversation with reporter revealed the following information: the reporter stated cause of the failure to pressurize the cabin was not reported by maintenance and no follow up was made. The reporter said after the return to the field a quick plane change was made and maintenance was still working the pressurization report.

Original NASA ASRS Text

Title: A B737-300 ON CLBOUT AT 7000 FT RETURNS TO THE FIELD DUE TO UNABLE TO PRESSURIZE THE CABIN CAUSE UNKNOWN.

Narrative: ON CLBOUT FROM PITTSBURGH ACFT DID NOT PRESSURIZE. AFTER FOLLOWING PROCS OUTLINED IN THE QRH WE WERE UNABLE TO ESTABLISH PRESSURIZATION. AFTER CONTACT WITH DISPATCH AND MAINT THE DECISION WAS MADE TO RETURN TO PIT FOR LNDG. WE DID NOT CLB ABOVE 7000 FT, DID NOT DECLARE AN EMER. NORMAL LNDG WAS MADE. NOTE: 13+ HR DAY DID NOT HELP. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED CAUSE OF THE FAILURE TO PRESSURIZE THE CABIN WAS NOT RPTED BY MAINT AND NO FOLLOW UP WAS MADE. THE RPTR SAID AFTER THE RETURN TO THE FIELD A QUICK PLANE CHANGE WAS MADE AND MAINT WAS STILL WORKING THE PRESSURIZATION RPT.

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.

A B737-300 on climb out at 7000 ft returns to the field due to unable to pressurize the cabin cause unknown.