Large transport has pressurization problems, descends.

Attributes
ACN	225320
Time
Date	199211
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sea
State Reference	WA
Altitude	msl bound lower : 14000 msl bound upper : 18000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors enroute airway : zse
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 100 flight time total : 17000 flight time type : 3700
ASRS Report	225320
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
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

Narrative:

At approximately 14000 ft MSL, the flight crew felt pressure changes in our ears. The #1 bleed tripped. The so went into the book and followed the procedure. The bleed reset and everything appeared normal, but the cabin continued climbing through 10000 ft MSL, causing the horn to sound. The crew went on oxygen and the so followed the procedure for loss of pressurization. We started a descent and during the descent the oxygen masks came out automatically. We descended to 10000 ft MSL and took vectors from sea approach to a landing at sea. No further incidents.

Original NASA ASRS Text

Title: LGT HAS PRESSURIZATION PROBLEMS, DSNDS.

Narrative: AT APPROX 14000 FT MSL, THE FLC FELT PRESSURE CHANGES IN OUR EARS. THE #1 BLEED TRIPPED. THE SO WENT INTO THE BOOK AND FOLLOWED THE PROC. THE BLEED RESET AND EVERYTHING APPEARED NORMAL, BUT THE CABIN CONTINUED CLBING THROUGH 10000 FT MSL, CAUSING THE HORN TO SOUND. THE CREW WENT ON OXYGEN AND THE SO FOLLOWED THE PROC FOR LOSS OF PRESSURIZATION. WE STARTED A DSCNT AND DURING THE DSCNT THE OXYGEN MASKS CAME OUT AUTOMATICALLY. WE DSNDED TO 10000 FT MSL AND TOOK VECTORS FROM SEA APCH TO A LNDG AT SEA. NO FURTHER INCIDENTS.

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.