Commuter light transport precautionary landing due electrical smoke fumes.

Attributes
ACN	92779
Time
Date	198808
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : mry
State Reference	CA
Altitude	msl bound lower : 0 msl bound upper : 8000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zoa tracon : mry
Operator	common carrier : air carrier
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	cruise other descent : approach landing other
Route In Use	approach : visual enroute : on vectors enroute : direct
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : cfi pilot : atp pilot : commercial
Experience	flight time last 90 days : 232 flight time total : 2400 flight time type : 832
ASRS Report	92779
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency none taken : unable other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

In cruise flight over mountainous terrain at night, smelled electrical type burning and fumes. Completed appropriate emergency checklist. Declared emergency with ATC, advise ZOA that I would like vectors to closest airport (appropriate to handle aircraft). Handed over to monterey approach. They gave vector for ILS 10 approach. I told approach that I would probably lose communications (after complete emergency checklist was completed). They (approach control) cleared me direct to manso (compass locator) and for ILS 10R approach. I took controls from copilot because he has no instruments when on emergency bus. Once we got close to mry I saw we could land on runway 28L in VFR conditions. Would have had to go into clouds to land runway 10R and execute the instrument approach. I was unable to inform mry approach because communication was lost. I overflew airport to enter right downwind (28) because mountains are higher on left downwind for runway 28. Made visual approach for runway 28L. Because we were on emergency bus we had no lights (landing, taxi, navigation, beacons, anticollision) and no flap control, so it was a flap up landing. Landed runway 28L and brought aircraft to complete stop on runway, evacuated passenger on runway because smell was still present in cabin. Problem was caused by a problem with cabin fan.

Original NASA ASRS Text

Title: COMMUTER LTT PRECAUTIONARY LNDG DUE ELECTRICAL SMOKE FUMES.

Narrative: IN CRUISE FLT OVER MOUNTAINOUS TERRAIN AT NIGHT, SMELLED ELECTRICAL TYPE BURNING AND FUMES. COMPLETED APPROPRIATE EMER CHKLIST. DECLARED EMER WITH ATC, ADVISE ZOA THAT I WOULD LIKE VECTORS TO CLOSEST ARPT (APPROPRIATE TO HANDLE ACFT). HANDED OVER TO MONTEREY APCH. THEY GAVE VECTOR FOR ILS 10 APCH. I TOLD APCH THAT I WOULD PROBABLY LOSE COMS (AFTER COMPLETE EMER CHKLIST WAS COMPLETED). THEY (APCH CTL) CLRED ME DIRECT TO MANSO (COMPASS LOCATOR) AND FOR ILS 10R APCH. I TOOK CONTROLS FROM COPLT BECAUSE HE HAS NO INSTRUMENTS WHEN ON EMER BUS. ONCE WE GOT CLOSE TO MRY I SAW WE COULD LAND ON RWY 28L IN VFR CONDITIONS. WOULD HAVE HAD TO GO INTO CLOUDS TO LAND RWY 10R AND EXECUTE THE INSTRUMENT APCH. I WAS UNABLE TO INFORM MRY APCH BECAUSE COM WAS LOST. I OVERFLEW ARPT TO ENTER RIGHT DOWNWIND (28) BECAUSE MOUNTAINS ARE HIGHER ON LEFT DOWNWIND FOR RWY 28. MADE VISUAL APCH FOR RWY 28L. BECAUSE WE WERE ON EMER BUS WE HAD NO LIGHTS (LNDG, TAXI, NAV, BEACONS, ANTICOLLISION) AND NO FLAP CTL, SO IT WAS A FLAP UP LNDG. LANDED RWY 28L AND BROUGHT ACFT TO COMPLETE STOP ON RWY, EVACUATED PAX ON RWY BECAUSE SMELL WAS STILL PRESENT IN CABIN. PROB WAS CAUSED BY A PROB WITH CABIN FAN.

Data retrieved from NASA's ASRS site as of August 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.