B737-400 flight crew experiences loss of pressurization at FL330. Returns to departure airport.

Attributes
ACN	413150
Time
Date	199809
Day	Thu
Local Time Of Day	0001 To 0600
Place
Locale Reference	atc facility : anc
State Reference	AK
Altitude	msl bound lower : 33000 msl bound upper : 33000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zan
Operator	common carrier : air carrier
Make Model Name	B737-400
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 : atp
ASRS Report	413150
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical other anomaly other
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:

Aircraft would not hold pressure at FL330. Returned to anc.

Original NASA ASRS Text

Title: B737-400 FLC EXPERIENCES LOSS OF PRESSURIZATION AT FL330. RETURNS TO DEP ARPT.

Narrative: ACFT WOULD NOT HOLD PRESSURE AT FL330. RETURNED TO ANC.

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.