Large transport has pressurization problems at altitude. Descends, return land.

Attributes
ACN	311177
Time
Date	199507
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : rdu
State Reference	NC
Altitude	msl bound lower : 29000 msl bound upper : 29000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : ztl
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 159 flight time total : 7500 flight time type : 3500
ASRS Report	311177
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

During climb to cruise, the so determined that the cabin pressure altitude was rising. A descent was initiated and a request was made to return to atl. All checklists were completed and the approach and landing were uneventful.

Original NASA ASRS Text

Title: LGT HAS PRESSURIZATION PROBS AT ALT. DSNDS, RETURN LAND.

Narrative: DURING CLB TO CRUISE, THE SO DETERMINED THAT THE CABIN PRESSURE ALT WAS RISING. A DSCNT WAS INITIATED AND A REQUEST WAS MADE TO RETURN TO ATL. ALL CHKLISTS WERE COMPLETED AND THE APCH AND LNDG WERE UNEVENTFUL.

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.