MD80 crew lost cabin pressurization.

Attributes
ACN	462409
Time
Date	200001
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : zme.artcc
State Reference	TN
Altitude	msl single value : 33000
Aircraft 1
Controlling Facilities	artcc : zme.artcc
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	462409
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : diverted to another airport other
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Emergency descent. Departure ord flight abc, normal climb to FL330. At approximately 1 hour into the flight, we started to lose cabin pressure. We changed cabin controllers with no results. Cabin altitude was at 10000 ft and increasing. An emergency descent was initiated to 10000 ft. Completed the checklist, advised the flight attendants and passenger on the use of oxygen. We diverted to bna at 10000 ft and landed. Did not declare an emergency. Was able to get lower altitude from ATC and was able to reach an altitude below 14000 ft in just a few mins. Crew coordination in the cockpit and between the cockpit and the cabin was good. No medical problems were reported from the passenger. Both myself and my first officer had some inner ear pain from the emergency descent.

Original NASA ASRS Text

Title: MD80 CREW LOST CABIN PRESSURIZATION.

Narrative: EMER DSCNT. DEP ORD FLT ABC, NORMAL CLB TO FL330. AT APPROX 1 HR INTO THE FLT, WE STARTED TO LOSE CABIN PRESSURE. WE CHANGED CABIN CONTROLLERS WITH NO RESULTS. CABIN ALT WAS AT 10000 FT AND INCREASING. AN EMER DSCNT WAS INITIATED TO 10000 FT. COMPLETED THE CHKLIST, ADVISED THE FLT ATTENDANTS AND PAX ON THE USE OF OXYGEN. WE DIVERTED TO BNA AT 10000 FT AND LANDED. DID NOT DECLARE AN EMER. WAS ABLE TO GET LOWER ALT FROM ATC AND WAS ABLE TO REACH AN ALT BELOW 14000 FT IN JUST A FEW MINS. CREW COORD IN THE COCKPIT AND BTWN THE COCKPIT AND THE CABIN WAS GOOD. NO MEDICAL PROBS WERE RPTED FROM THE PAX. BOTH MYSELF AND MY FO HAD SOME INNER EAR PAIN FROM THE EMER DSCNT.

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.