<< >> NASA ASRS Report 353804, November 1996

An air carrier B757 had an aircraft equipment problem equipment overheat. Emergency declared. Overwater operation.

Attributes
ACN	353804
Time
Date	199611
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : mia
State Reference	FL
Environment
Light	Night
Aircraft 1
Controlling Facilities	artcc : zma
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	cruise other other
Route In Use	enroute : atlantic
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	353804
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency none taken : anomaly accepted other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

At approximately 30 mins prior to landing, the first officer and I started to smell a strange odor in the cockpit. We tried to locate the source but were unable. The fumes became a little stronger and began to irritate my nose and eyes. We donned our oxygen masks and goggles. I briefed the premium flight attendant. We discussed using the electrical fire and smoke checklist, but since we were not sure that the fumes were electrical, we decided not to run the checklist but to declare an emergency and land as soon as possible in mia. Landing was uneventful. On taxi in, the equipment overheat light came on. We accomplished the appropriate procedure. Looking back, I believe that I should have run the electrical smoke and fire checklist as a precaution and it may have alleviated the fumes.

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Original NASA ASRS Text

Title: AN ACR B757 HAD AN ACFT EQUIP PROB EQUIP OVERHEAT. EMER DECLARED. OVERWATER OP.

Narrative: AT APPROX 30 MINS PRIOR TO LNDG, THE FO AND I STARTED TO SMELL A STRANGE ODOR IN THE COCKPIT. WE TRIED TO LOCATE THE SOURCE BUT WERE UNABLE. THE FUMES BECAME A LITTLE STRONGER AND BEGAN TO IRRITATE MY NOSE AND EYES. WE DONNED OUR OXYGEN MASKS AND GOGGLES. I BRIEFED THE PREMIUM FLT ATTENDANT. WE DISCUSSED USING THE ELECTRICAL FIRE AND SMOKE CHKLIST, BUT SINCE WE WERE NOT SURE THAT THE FUMES WERE ELECTRICAL, WE DECIDED NOT TO RUN THE CHKLIST BUT TO DECLARE AN EMER AND LAND ASAP IN MIA. LNDG WAS UNEVENTFUL. ON TAXI IN, THE EQUIP OVERHEAT LIGHT CAME ON. WE ACCOMPLISHED THE APPROPRIATE PROC. LOOKING BACK, I BELIEVE THAT I SHOULD HAVE RUN THE ELECTRICAL SMOKE AND FIRE CHKLIST AS A PRECAUTION AND IT MAY HAVE ALLEVIATED THE FUMES.

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.