A B737-700 left pack tripped off during climb but reset. It tripped again at cruise; followed by the...

Attributes
ACN	1121251
Time
Date	201310
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	Climb
Component
Aircraft Component	Air Conditioning and Pressurization Pack
Person 1
Function	Pilot Not Flying First Officer
Experience	Flight Crew Last 90 Days 140 Flight Crew Type 5500
Person 2
Function	Pilot Flying Captain
Experience	Flight Crew Last 90 Days 108
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

During climb out; the left pack trip off illuminated. We consulted the QRH and cleared the master caution light. Prior to reaching the cruise altitude of FL370; the left pack trip off illuminated again followed by the right pack trip off. We immediately donned our oxygen masks and informed ATC we were performing an emergency descent. The captain was flying and told ATC we wanted to divert to an airport which was close to our en route position. After completing the QRH; we coordinated with dispatch and it was determined we were going to land overweight at approximately 134;000 pounds. We declared an emergency with ATC; informed the flight attendants and the passengers. We landed overweight without incident. The emergency personnel standing by inspected the brakes before we continued the taxi to the gate.

Original NASA ASRS Text

Title: A B737-700 Left Pack Tripped Off during climb but reset. It tripped again at cruise; followed by the Right Pack Trip; so an emergency was declared and the flight diverted to a nearby airport.

Narrative: During climb out; the Left Pack Trip Off illuminated. We consulted the QRH and cleared the Master Caution light. Prior to reaching the cruise altitude of FL370; the Left Pack Trip Off illuminated again followed by the Right Pack Trip Off. We immediately donned our oxygen masks and informed ATC we were performing an emergency descent. The Captain was flying and told ATC we wanted to divert to an airport which was close to our en route position. After completing the QRH; we coordinated with Dispatch and it was determined we were going to land overweight at approximately 134;000 LBS. We declared an emergency with ATC; informed the flight attendants and the passengers. We landed overweight without incident. The emergency personnel standing by inspected the brakes before we continued the taxi to the gate.

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.

A B737-700 left pack tripped off during climb but reset. It tripped again at cruise; followed by the right pack trip; so an emergency was declared and the flight diverted to a nearby airport.