Flight crew of an light transport returned to land due to smoke in the cabin.

Attributes
ACN	289046
Time
Date	199411
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : yow
State Reference	ON
Altitude	msl bound lower : 5000 msl bound upper : 5000
Environment
Flight Conditions	Mixed
Light	Night
Aircraft 1
Controlling Facilities	tower : yow
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 135
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 200 flight time total : 4300 flight time type : 1200
ASRS Report	289046
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 other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

Upon departure in initial climb at approximately 5000 ft MSL. Smoke was detected in cabin. Smoke was of light to moderate density -- not immediately clear if it was electrical or other. ATC was informed that we would like to return to airport for precautionary landing. Approach asked if we needed assistance -- we responded 'not at the present time.' we vectored to the runway in use and proceeded to carry out 'smoke in cabin' checklist and to trouble-shoot possible causes. Smoke did not intensify and no evidence of fire was apparent -- save for smoke. We then requested upon turning final that emergency equipment be standing by. Normal landing completed -- and escorted to parking by emergency equipment. Having shut down all aircraft system and engines, smoke dissipated and aircraft was secured. Emergency services were released.

Original NASA ASRS Text

Title: FLC OF AN LTT RETURNED TO LAND DUE TO SMOKE IN THE CABIN.

Narrative: UPON DEP IN INITIAL CLB AT APPROX 5000 FT MSL. SMOKE WAS DETECTED IN CABIN. SMOKE WAS OF LIGHT TO MODERATE DENSITY -- NOT IMMEDIATELY CLR IF IT WAS ELECTRICAL OR OTHER. ATC WAS INFORMED THAT WE WOULD LIKE TO RETURN TO ARPT FOR PRECAUTIONARY LNDG. APCH ASKED IF WE NEEDED ASSISTANCE -- WE RESPONDED 'NOT AT THE PRESENT TIME.' WE VECTORED TO THE RWY IN USE AND PROCEEDED TO CARRY OUT 'SMOKE IN CABIN' CHKLIST AND TO TROUBLE-SHOOT POSSIBLE CAUSES. SMOKE DID NOT INTENSIFY AND NO EVIDENCE OF FIRE WAS APPARENT -- SAVE FOR SMOKE. WE THEN REQUESTED UPON TURNING FINAL THAT EMER EQUIP BE STANDING BY. NORMAL LNDG COMPLETED -- AND ESCORTED TO PARKING BY EMER EQUIP. HAVING SHUT DOWN ALL ACFT SYS AND ENGS, SMOKE DISSIPATED AND ACFT WAS SECURED. EMER SVCS WERE RELEASED.

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.