DC9-30 diversion to alternate upon losing cabin pressure with a power reduction for descent.

Attributes
ACN	362076
Time
Date	199702
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : bna
State Reference	TN
Altitude	msl bound lower : 22000 msl bound upper : 22000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zme tracon : anc
Operator	common carrier : air carrier
Make Model Name	DC-9 30
Operating Under FAR Part	Part 121
Flight Phase	descent other other other
Route In Use	enroute other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 180 flight time total : 8800 flight time type : 5000
ASRS Report	362076
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	other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

En route from clt to mem, flight MEL'ed with right pack inoperative. Started our initial descent for mem 30 mi north of bna. Cabin started to climb. We did the emergency checklist and were still unable to control cabin. We elected to declare an emergency and diverted into bna.

Original NASA ASRS Text

Title: DC9-30 DIVERSION TO ALTERNATE UPON LOSING CABIN PRESSURE WITH A PWR REDUCTION FOR DSCNT.

Narrative: ENRTE FROM CLT TO MEM, FLT MEL'ED WITH R PACK INOP. STARTED OUR INITIAL DSCNT FOR MEM 30 MI N OF BNA. CABIN STARTED TO CLB. WE DID THE EMER CHKLIST AND WERE STILL UNABLE TO CTL CABIN. WE ELECTED TO DECLARE AN EMER AND DIVERTED INTO BNA.

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.