Flight crew and cabin attendants on medium large transport air carrier departing pit experience smoke from the air conditioning system immediately after takeoff. Flight crew returns the aircraft to land at pit.

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Attributes
ACN	142921
Time
Date	199004
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : pit
State Reference	PA
Altitude	msl bound lower : 1200 msl bound upper : 1200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : pit tower : pit
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : takeoff climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : atp
Experience	flight time last 90 days : 175 flight time total : 9500 flight time type : 4900
ASRS Report	142921
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency none taken : unable none taken : insufficient time other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Just after takeoff smoke entered cockpit through eyeball vents. F/as reported smoke in cabin and smoke detectors sounding in lavs. I determined that it was air-conditioning smoke and we ran the air-conditioning smoke checklist. Requested return to field and received immediate vectors for the visibility to runway 28R. We elected to leave oxygen masks on even though smoke had subsided. Landing and return to gate were uneventful.

Original NASA ASRS Text

Title: FLT CREW AND CABIN ATTENDANTS ON MLG ACR DEPARTING PIT EXPERIENCE SMOKE FROM THE AIR CONDITIONING SYSTEM IMMEDIATELY AFTER TKOF. FLT CREW RETURNS THE ACFT TO LAND AT PIT.

Narrative: JUST AFTER TKOF SMOKE ENTERED COCKPIT THROUGH EYEBALL VENTS. F/AS RPTED SMOKE IN CABIN AND SMOKE DETECTORS SOUNDING IN LAVS. I DETERMINED THAT IT WAS AIR-CONDITIONING SMOKE AND WE RAN THE AIR-CONDITIONING SMOKE CHKLIST. REQUESTED RETURN TO FIELD AND RECEIVED IMMEDIATE VECTORS FOR THE VIS TO RWY 28R. WE ELECTED TO LEAVE OXYGEN MASKS ON EVEN THOUGH SMOKE HAD SUBSIDED. LNDG AND RETURN TO GATE WERE UNEVENTFUL.

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.