B767 first officer reports being dispatched with the left pack inoperative then having the right pack trip for an over temp at FL350. Masks are donned and the QRH is complied with; resulting in the pack being reset in stby north.

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Attributes
ACN	1237805
Time
Date	201502
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.ARTCC
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 Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

Our aircraft was released for duty with the left pack inoperative. At FL350;our final cruise altitude; the right pack had an over temp and it shut down. We put on our oxygen masks and went to the QRH. We were able to get the right pack up using stby north and we continued to destination without incident. Right pack temperature; followed by right pack inoperative.

Original NASA ASRS Text

Title: B767 First Officer reports being dispatched with the left pack inoperative then having the right pack trip for an over temp at FL350. Masks are donned and the QRH is complied with; resulting in the pack being reset in STBY N.

Narrative: Our aircraft was released for duty with the left pack inoperative. At FL350;our final cruise altitude; the right pack had an over temp and It shut down. We put on our oxygen masks and went to the QRH. We were able to get the right pack up using STBY N and we continued to destination without incident. R PACK TEMP; followed by R PACK INOP.

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.