A B767 flight crew en-route to london reports pack failure prior to departing continental us. They e...

Narrative:

While enroute to london; the left pack failed (left pack temp). Emergency checklist for left pack temp was run but pack remained inoperative. Talked to dispatch and maintenance. The captain in consultation with dispatch decided to divert to a domestic station instead of continuing on an ETOPS flight. I concurred with that decision. Approximately 30;000 pounds of fuel dumped at or above FL240. Ran overweight landing checklist as well as all normal checklists. Emergency declared and landed overweight at 340;000 pounds or so. Landing was very smooth and uneventful. Braking was very gradual and smooth but even so; two tires eventually deflated at gate and were replaced. Pack fixed and we refueled and resumed our flight to london.

Original NASA ASRS Text

Title: A B767 flight crew en-route to London reports pack failure prior to departing continental US. They elected to divert for repairs. After an overweight landing two tires failed at the gate; the flight continued to London after repairs.

Narrative: While enroute to London; the left pack failed (L Pack Temp). Emergency checklist for Left Pack Temp was run but pack remained inoperative. Talked to Dispatch and Maintenance. The Captain in consultation with Dispatch decided to divert to a domestic station instead of continuing on an ETOPS flight. I concurred with that decision. Approximately 30;000 LBS of fuel dumped at or above FL240. Ran Overweight Landing checklist as well as all normal checklists. Emergency declared and landed overweight at 340;000 LBS or so. Landing was very smooth and uneventful. Braking was very gradual and smooth but even so; two tires eventually deflated at gate and were replaced. Pack fixed and we refueled and resumed our flight to London.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	844006
Time
Date	200907
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Air Conditioning and Pressurization Pack
Person 1
Function	First Officer Pilot Not Flying
Person 2
Function	Pilot Flying Captain
Events
Anomaly	Aircraft Equipment Problem Less Severe

A B767 flight crew en-route to london reports pack failure prior to departing continental us. They elected to divert for repairs. After an overweight landing two tires failed at the gate; the flight continued to london after repairs.