<< >> NASA ASRS Report 417192, October 1998

An MD80 has problems with its pressurization system and diverts to den. The flight attendants did not believe that this was a loss of cabin pressure.

Attributes
ACN	417192
Time
Date	199810
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : zdv
State Reference	CO
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdv tracon : den tower : pns
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	cruise other other other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight attendant : on duty
Qualification	other other : other
ASRS Report	417192
Person 2
Affiliation	company : air carrier
Function	flight attendant : on duty observation : passenger observation : observer
Qualification	other other : other
ASRS Report	418405
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa other other : unspecified
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

We don't think it was a decompression. We knew cockpit was having trouble with pressurization. We smelled a burning electrical smell. I walked up front to see what they smelled (other flight attendants). They smelled same smell. We opened up cockpit doors. Pilots on oxygen. Signaled to wait 1 min. We were descending rapidly. I walked to the back checking seatbelts on the way. When I got to the back I got a call that we were diverting to the closest airport. We went to den. No trouble other than that. Supplemental information from acn 418405: 1/2 way through flight, captain announced that aircraft was having problems with pressurization. I felt pressure in my ears. No oxygen masks were deployed.

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Original NASA ASRS Text

Title: AN MD80 HAS PROBS WITH ITS PRESSURIZATION SYS AND DIVERTS TO DEN. THE FLT ATTENDANTS DID NOT BELIEVE THAT THIS WAS A LOSS OF CABIN PRESSURE.

Narrative: WE DON'T THINK IT WAS A DECOMPRESSION. WE KNEW COCKPIT WAS HAVING TROUBLE WITH PRESSURIZATION. WE SMELLED A BURNING ELECTRICAL SMELL. I WALKED UP FRONT TO SEE WHAT THEY SMELLED (OTHER FLT ATTENDANTS). THEY SMELLED SAME SMELL. WE OPENED UP COCKPIT DOORS. PLTS ON OXYGEN. SIGNALED TO WAIT 1 MIN. WE WERE DSNDING RAPIDLY. I WALKED TO THE BACK CHKING SEATBELTS ON THE WAY. WHEN I GOT TO THE BACK I GOT A CALL THAT WE WERE DIVERTING TO THE CLOSEST ARPT. WE WENT TO DEN. NO TROUBLE OTHER THAN THAT. SUPPLEMENTAL INFO FROM ACN 418405: 1/2 WAY THROUGH FLT, CAPT ANNOUNCED THAT ACFT WAS HAVING PROBS WITH PRESSURIZATION. I FELT PRESSURE IN MY EARS. NO OXYGEN MASKS WERE DEPLOYED.

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.