<< >> NASA ASRS Report 995034, February 2012

At FL380 a B767-300's left pack temperature hi and pack off lights illuminated followed shortly by the right pack off light annunciating. An emergency was declared and the flight returned to the departure airport with the cabin always below 10;000 ft.

Attributes
ACN	995034
Time
Date	201202
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	B767-200
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Air Conditioning and Pressurization Pack
Person 1
Function	Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

FL380; shortly after level off; left pack temperature hi and pack off lights on; accomplished QRH procedure. Shortly after; right pack off light came on. Declared emergency and performed an emergency descent to 10;000 ft. Burned fuel to below max landing weight and returned to the departure airport for uneventful landing. Cabin did not exceed 10;000 ft. No injuries to passengers or crew during incident; descent and return.

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Original NASA ASRS Text

Title: At FL380 a B767-300's Left PACK TEMP HI and PACK OFF lights illuminated followed shortly by the Right PACK OFF light annunciating. An emergency was declared and the flight returned to the departure airport with the cabin always below 10;000 FT.

Narrative: FL380; shortly after level off; left PACK TEMP HI and PACK OFF lights on; accomplished QRH procedure. Shortly after; right PACK OFF light came on. Declared emergency and performed an emergency descent to 10;000 FT. Burned fuel to below max landing weight and returned to the departure airport for uneventful landing. Cabin did not exceed 10;000 FT. No injuries to passengers or crew during incident; descent and return.

Data retrieved from NASA's ASRS site as of July 2013 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.