<< >> NASA ASRS Report 1095794, June 2013

An MD82's automatic cabin pressure controller failed at FL330; flight crew declared an emergency and while descending the first officer stabilized the cabin in manual control. After leveling at FL240 the flight diverted to a nearby airport.

Attributes
ACN	1095794
Time
Date	201306
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Light	Night
Aircraft 1
Make Model Name	MD-82
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Pressurization Control System
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

Lost cabin pressurization; cabin altitude warning [we] performed red block items. Immediately regained cabin pressurization with manual control. [We] descended from FL330; while the first officer read the QRH checklist. [We] stopped at FL240 as first officer had cabin pressure stable with manual control. [We] talked to flight attendants and dispatch based on information elected to divert.

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Original NASA ASRS Text

Title: An MD82's AUTO Cabin Pressure Controller failed at FL330; flight crew declared an emergency and while descending the First Officer stabilized the cabin in Manual Control. After leveling at FL240 the flight diverted to a nearby airport.

Narrative: Lost cabin pressurization; Cabin Altitude Warning [we] performed red block items. Immediately regained cabin pressurization with Manual Control. [We] descended from FL330; while the First Officer read the QRH checklist. [We] stopped at FL240 as First Officer had cabin pressure stable with manual control. [We] talked to flight attendants and Dispatch based on information elected to divert.

Data retrieved from NASA's ASRS site as of July 2013 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.