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B737-200 develops smoke in the cockpit when engine anti-ice wiring shorts and circuit breaker fails to trip.
| Attributes | |
| ACN | 349488 |
| Time | |
| Date | 199610 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : clt |
| State Reference | NC |
| Altitude | msl bound lower : 16000 msl bound upper : 22000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl |
| Operator | common carrier : air carrier |
| Make Model Name | B737-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other descent other |
| Route In Use | enroute airway : j75 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 200 flight time total : 12000 flight time type : 1000 |
| ASRS Report | 349488 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem flight crew : declared emergency |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
Cruise at FL280 had light chop, descent to FL260 then FL220 for smoother ride, but captain noticed ice so he applied ignition, then engine anti-ice. Within a min gray smoke began to flow out of overhead panel. I turned off the engine anti-ice and we both donned oxygen and established communication. Atl ATC gave descent to 16000 ft. Accomplished the checklists except did not raise cabin to 10000 ft since smoke had ceased. Did not declare emergency or request equipment upon arrival since problem had been isolated. #1 engine anti-ice in-transit lights were frozen in lit position, but had even engine parameters. Upon arrival discovered engine anti-ice wiring harness shorted out/burnt with no circuit breaker popped. Crews are hesitant to declare emergency because of disservice the media does to a carrier when they mention anything about an airline.
Original NASA ASRS Text
Title: B737-200 DEVELOPS SMOKE IN THE COCKPIT WHEN ENG ANTI-ICE WIRING SHORTS AND CIRCUIT BREAKER FAILS TO TRIP.
Narrative: CRUISE AT FL280 HAD LIGHT CHOP, DSCNT TO FL260 THEN FL220 FOR SMOOTHER RIDE, BUT CAPT NOTICED ICE SO HE APPLIED IGNITION, THEN ENG ANTI-ICE. WITHIN A MIN GRAY SMOKE BEGAN TO FLOW OUT OF OVERHEAD PANEL. I TURNED OFF THE ENG ANTI-ICE AND WE BOTH DONNED OXYGEN AND ESTABLISHED COM. ATL ATC GAVE DSCNT TO 16000 FT. ACCOMPLISHED THE CHKLISTS EXCEPT DID NOT RAISE CABIN TO 10000 FT SINCE SMOKE HAD CEASED. DID NOT DECLARE EMER OR REQUEST EQUIP UPON ARR SINCE PROB HAD BEEN ISOLATED. #1 ENG ANTI-ICE IN-TRANSIT LIGHTS WERE FROZEN IN LIT POS, BUT HAD EVEN ENG PARAMETERS. UPON ARR DISCOVERED ENG ANTI-ICE WIRING HARNESS SHORTED OUT/BURNT WITH NO CIRCUIT BREAKER POPPED. CREWS ARE HESITANT TO DECLARE EMER BECAUSE OF DISSERVICE THE MEDIA DOES TO A CARRIER WHEN THEY MENTION ANYTHING ABOUT AN AIRLINE.
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.