<< >> NASA ASRS Report 530233, November 2001

A B738 crew, shortly after departing bdl, experienced the cabin altitude warning along with the deployment of the cabin oxygen masks.

Attributes
ACN	530233
Time
Date	200111
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : bdl.airport
State Reference	CT
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : bdl.tracon
Operator	common carrier : air carrier
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight attendant : on duty
Experience	flight attendant time airline total : 3.5 flight attendant time total : 3.5 flight attendant time type : 30
ASRS Report	530233
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	cabin event other non adherence : company policies non adherence : published procedure other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : cabin alt warning horn other flight crewa other flight crewb other other : 1
Resolutory Action	flight crew : overcame equipment problem flight crew : overrode automation
Consequence	other
Supplementary
Problem Areas	Cabin Crew Human Performance Aircraft Flight Crew Human Performance
Primary Problem	Aircraft

Narrative:

Flight XXX took off from bdl at XA45. Approximately 10 mins later I heard the warning horn in the cockpit. I tried to contact the cockpit via the interphone, there were no answers. The masks fell, I tried to contact them again, still no response. I made the decompression PA. The other 3 flight attendants walked through the cabin to check on passenger. There were 13 rows where the masks did not fall. Probably 3 mins later the captain made a PA to stay on oxygen until they got things under control. The captain announced a few mins later that oxygen was no longer necessary and we would continue to ord. After we arrived in ord I asked the first officer what happened. He said a pack went out and they manually had to switch to the other pack. I asked what altitude we maintained. He said 28000 ft. We were not happy about this decision.

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Original NASA ASRS Text

Title: A B738 CREW, SHORTLY AFTER DEPARTING BDL, EXPERIENCED THE CABIN ALT WARNING ALONG WITH THE DEPLOYMENT OF THE CABIN OXYGEN MASKS.

Narrative: FLT XXX TOOK OFF FROM BDL AT XA45. APPROX 10 MINS LATER I HEARD THE WARNING HORN IN THE COCKPIT. I TRIED TO CONTACT THE COCKPIT VIA THE INTERPHONE, THERE WERE NO ANSWERS. THE MASKS FELL, I TRIED TO CONTACT THEM AGAIN, STILL NO RESPONSE. I MADE THE DECOMPRESSION PA. THE OTHER 3 FLT ATTENDANTS WALKED THROUGH THE CABIN TO CHK ON PAX. THERE WERE 13 ROWS WHERE THE MASKS DID NOT FALL. PROBABLY 3 MINS LATER THE CAPT MADE A PA TO STAY ON OXYGEN UNTIL THEY GOT THINGS UNDER CTL. THE CAPT ANNOUNCED A FEW MINS LATER THAT OXYGEN WAS NO LONGER NECESSARY AND WE WOULD CONTINUE TO ORD. AFTER WE ARRIVED IN ORD I ASKED THE FO WHAT HAPPENED. HE SAID A PACK WENT OUT AND THEY MANUALLY HAD TO SWITCH TO THE OTHER PACK. I ASKED WHAT ALT WE MAINTAINED. HE SAID 28000 FT. WE WERE NOT HAPPY ABOUT THIS DECISION.

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.