<< >> NASA ASRS Report 1279890, July 2015

Flight crew experiences a cockpit full of smoke shortly after the temperature controls have been adjusted to a warmer temperature. Oxygen masks are donned and temperature selected to full cold. As a descent is initiated the smoke begins to dissipate and the crew continues the descent and diverts to a suitable airport.

Attributes
ACN	1279890
Time
Date	201507
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Widebody Low Wing 3 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Air Conditioning and Pressurization Pack
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor

Narrative:

While at cruise altitude; cockpit began filling with smoke. Smoke appeared to come from the ventilation system. Smoke density increased to a point where cockpit visibility was difficult. Both crewmembers immediately donned oxygen masks. Center was contacted and a divert was initiated. Prior to the event; the cockpit temp had been recently adjusted to a warmer setting. When the smoke was noticed; the rheostats were returned to the full cold setting the smoke stopped after 3-5 minutes.the divert; approach; and landing were uneventful. Arff met the aircraft upon landing. Arff escorted both flight crew members to the hospital for evaluation. Both crew members were released with no injuries and no signs of smoke inhalation.

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Original NASA ASRS Text

Title: Flight crew experiences a cockpit full of smoke shortly after the temperature controls have been adjusted to a warmer temperature. Oxygen masks are donned and temperature selected to full cold. As a descent is initiated the smoke begins to dissipate and the crew continues the descent and diverts to a suitable airport.

Narrative: While at cruise altitude; cockpit began filling with smoke. Smoke appeared to come from the ventilation system. Smoke density increased to a point where cockpit visibility was difficult. Both crewmembers immediately donned oxygen masks. Center was contacted and a divert was initiated. Prior to the event; the cockpit temp had been recently adjusted to a warmer setting. When the smoke was noticed; the rheostats were returned to the full cold setting the smoke stopped after 3-5 minutes.The divert; approach; and landing were uneventful. ARFF met the aircraft upon landing. ARFF escorted both flight crew members to the hospital for evaluation. Both crew members were released with no injuries and no signs of smoke inhalation.

Data retrieved from NASA's ASRS site 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.