An L1011 in cruise at FL290 declared an emergency due to light smoke in the cabin caused by the #2 a...

Attributes
ACN	399211
Time
Date	199804
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : mcn
State Reference	GA
Altitude	msl bound lower : 29000 msl bound upper : 29000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : ztl
Operator	common carrier : air carrier
Make Model Name	L-1011 Tri-Star All Series
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	cruise other other
Route In Use	arrival star : star enroute : direct
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 150 flight time total : 5000 flight time type : 1800
ASRS Report	399211
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 150 flight time total : 6184 flight time type : 1578
ASRS Report	399213
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other other : unspecified
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

Pack overheated. Smoke in cabin. Since not a meal flight, ovens not on. Problem solved quickly. Communication was key element. Crew coordination good. Training definite factor since coordinator was relatively new to the position. Callback conversation with reporter revealed the following information: the reporter stated the #2 air conditioning pack was the cause of the light smoke in the cabin. The reporter said the #2 pack air cycle machine discharge temperature indicator was deferred as inoperative so the crew could not monitor the air cycle machine performance. The reporter stated it may be possible a overheated air cycle machine caused the smoke.

Original NASA ASRS Text

Title: AN L1011 IN CRUISE AT FL290 DECLARED AN EMER DUE TO LIGHT SMOKE IN THE CABIN CAUSED BY THE #2 AIR CONDITIONING PACK.

Narrative: PACK OVERHEATED. SMOKE IN CABIN. SINCE NOT A MEAL FLT, OVENS NOT ON. PROB SOLVED QUICKLY. COM WAS KEY ELEMENT. CREW COORD GOOD. TRAINING DEFINITE FACTOR SINCE COORDINATOR WAS RELATIVELY NEW TO THE POS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE #2 AIR CONDITIONING PACK WAS THE CAUSE OF THE LIGHT SMOKE IN THE CABIN. THE RPTR SAID THE #2 PACK AIR CYCLE MACHINE DISCHARGE TEMP INDICATOR WAS DEFERRED AS INOP SO THE CREW COULD NOT MONITOR THE AIR CYCLE MACHINE PERFORMANCE. THE RPTR STATED IT MAY BE POSSIBLE A OVERHEATED AIR CYCLE MACHINE CAUSED THE SMOKE.

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.

An L1011 in cruise at FL290 declared an emergency due to light smoke in the cabin caused by the #2 air conditioning pack.