Aircraft equipment problem. Emergency declared.

Attributes
ACN	275133
Time
Date	199406
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : mmj
State Reference	PA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	climbout : intermediate altitude
Route In Use	enroute airway : zdc
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi pilot : instrument pilot : flight engineer pilot : commercial
Experience	flight time last 90 days : 180 flight time total : 17000 flight time type : 8000
ASRS Report	275133
Person 2
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency none taken : anomaly accepted other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

En route bwi-ord climbing to 35000 ft experienced air conditioning bleed malfunction. Thereafter noticed aircraft cabin continuing to climb. Attempted to regain control of cabin with both standby and manual pressurization controls. As cabin climbed through 10000 ft, declared emergency and followed rapid decompression emergency descent checklist. Diverted to pit (PA) no injuries no emergency equipment required. Landed at XA58 am

Original NASA ASRS Text

Title: ACFT EQUIP PROB. EMER DECLARED.

Narrative: ENRTE BWI-ORD CLBING TO 35000 FT EXPERIENCED AIR CONDITIONING BLEED MALFUNCTION. THEREAFTER NOTICED ACFT CABIN CONTINUING TO CLB. ATTEMPTED TO REGAIN CTL OF CABIN WITH BOTH STANDBY AND MANUAL PRESSURIZATION CTLS. AS CABIN CLBED THROUGH 10000 FT, DECLARED EMER AND FOLLOWED RAPID DECOMPRESSION EMER DSCNT CHKLIST. DIVERTED TO PIT (PA) NO INJURIES NO EMER EQUIP REQUIRED. LANDED AT XA58 AM

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.