SDR UIEA2017092001752

Service difficulty report · Shutoff Valve · Boeing 767375

Difficulty date: September 20, 2017
Submitted: September 21, 2017
Operation: Air carrier
Aircraft: N649GT
Make and model: Boeing 767375
Aircraft serial: 25864
Aircraft time: 85,222 hours, 22,117 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Shutoff Valve
Part number: 7998014
Part serial: 920515
Condition: Malfunctioned
Location: Lt A/C Pack
Stage of operation: TX
How discovered: O
Nature of condition: J
Precautionary procedure: D

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

PRIOR TO ENGINE START, LT PACK SWITCH OFF FOR ENGINE START, LT PACK OFF LIGHT REMAINED EXTINGUISHED AND LT PACK OFF EICAS MESSAGE. REMOVED AND REPLACED THE LT PRSOV IAW AMM 36-11-09, OPS CHECKED GOOD, PERFORMED ENG RUN IAW AMM 71-00-00, NO DEFECTS NOTED.