<< >> NASA ASRS Report 574218, February 2003

Emj flight departs with inoperative automatic pressurization and loses manual pressurization in climb.

Attributes
ACN	574218
Time
Date	200302
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	msl bound lower : 13000 msl bound upper : 21000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zau.artcc tracon : c90.tracon
Operator	common carrier : air carrier
Make Model Name	EMB ERJ 145 ER&LR
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
ASRS Report	574218
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	574217
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	aircraft equipment other aircraft equipment : cabin alt indicator other flight crewa other flight crewb
Resolutory Action	flight crew : overcame equipment problem flight crew : declared emergency other
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Departed ord with autopressurization deferred. Climbed normally through 13000 ft. Captain (PNF) noticed cabin altitude reaching 8000 ft. Adjusted cabin altitude during climb through FL190. Leveled off at FL210. Cabin altitude indicator was amber. Aom procedure followed for condition. First officer requested descent. Meanwhile, cabin altitude continued to rise (amber dashes on cabin right). Cabin altitude reached 14500 ft. Oxygen masks were donned as we continued descent. Oxygen masks deployed in main cabin descending through 15000 ft. Started regaining control of cabin. Altitude leveled off at 10000 ft. Recalculated fuel. Climbed up to 15000 ft and continued safely to destination. Passenger were briefed and flight attendant reassured everyone was safe in the main cabin.

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Original NASA ASRS Text

Title: EMJ FLT DEPARTS WITH INOP AUTO PRESSURIZATION AND LOSES MANUAL PRESSURIZATION IN CLB.

Narrative: DEPARTED ORD WITH AUTOPRESSURIZATION DEFERRED. CLBED NORMALLY THROUGH 13000 FT. CAPT (PNF) NOTICED CABIN ALT REACHING 8000 FT. ADJUSTED CABIN ALT DURING CLB THROUGH FL190. LEVELED OFF AT FL210. CABIN ALT INDICATOR WAS AMBER. AOM PROC FOLLOWED FOR CONDITION. FO REQUESTED DSCNT. MEANWHILE, CABIN ALT CONTINUED TO RISE (AMBER DASHES ON CABIN R). CABIN ALT REACHED 14500 FT. OXYGEN MASKS WERE DONNED AS WE CONTINUED DSCNT. OXYGEN MASKS DEPLOYED IN MAIN CABIN DSNDING THROUGH 15000 FT. STARTED REGAINING CTL OF CABIN. ALT LEVELED OFF AT 10000 FT. RECALCULATED FUEL. CLBED UP TO 15000 FT AND CONTINUED SAFELY TO DEST. PAX WERE BRIEFED AND FLT ATTENDANT REASSURED EVERYONE WAS SAFE IN THE MAIN CABIN.

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.