Climbing through FL260 a master warning light alerted the crew of a cabin pressurization annunciator light. The cabin pressurization controller indicated 1500 FPM climb and passing 10000 ft. The checklists were completed, the pressure loss was arrested, and the flight continued to the destination at a lower altitude.

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Attributes
ACN	333970
Time
Date	199604
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : psk
State Reference	VA
Altitude	msl bound lower : 26000 msl bound upper : 26000
Environment
Flight Conditions	Mixed
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 : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 230 flight time total : 12000 flight time type : 4000
ASRS Report	333970
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : overcame equipment problem other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

At approximately 26000 ft we got a master warning light with a 'cabin pressurization' annunciator light. I looked at the cabin pressurization controller and noticed the cabin climbing at 1500 FPM and passing 10000 ft cabin altitude. I immediately turned the flying duties and communications over to the first officer who then requested lower. I ran the emergency checklist and was able to arrest the cabin climb by using the manual backup. We flew to destination at a lower altitude.

Original NASA ASRS Text

Title: CLBING THROUGH FL260 A MASTER WARNING LIGHT ALERTED THE CREW OF A CABIN PRESSURIZATION ANNUNCIATOR LIGHT. THE CABIN PRESSURIZATION CTLR INDICATED 1500 FPM CLB AND PASSING 10000 FT. THE CHKLISTS WERE COMPLETED, THE PRESSURE LOSS WAS ARRESTED, AND THE FLT CONTINUED TO THE DEST AT A LOWER ALT.

Narrative: AT APPROX 26000 FT WE GOT A MASTER WARNING LIGHT WITH A 'CABIN PRESSURIZATION' ANNUNCIATOR LIGHT. I LOOKED AT THE CABIN PRESSURIZATION CTLR AND NOTICED THE CABIN CLBING AT 1500 FPM AND PASSING 10000 FT CABIN ALT. I IMMEDIATELY TURNED THE FLYING DUTIES AND COMS OVER TO THE FO WHO THEN REQUESTED LOWER. I RAN THE EMER CHKLIST AND WAS ABLE TO ARREST THE CABIN CLB BY USING THE MANUAL BACKUP. WE FLEW TO DEST AT A LOWER ALT.

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.