SDR IPXA2018101234932

Service difficulty report · A/C Pack · Boeing 75724APF

Difficulty date: October 11, 2018
Submitted: October 12, 2018
Operation: Air carrier
Aircraft: N409UP
Make and model: Boeing 75724APF
Aircraft serial: 23731
Aircraft time: 31,941 hours, 21,785 cycles
System (JASC): 2150 · Cabin Cooling System
Part: A/C Pack
Condition: Shutdown
Location: Both
Stage of operation: CR
How discovered: O
Nature of condition: O
Precautionary procedure: O

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

What was found

BOTH PACKS SHUT OFF IN FLIGHT. DIVERTED , REPLACED THE LT AND RT HPSOV, REPLACED RH HP PILOT VALVE, REPLACED BOTH BARROMETRIC SENSORS, REPLACED BOTH LT AND RT BLEED CONTROL CARDS. PERFORMED HEALTH CHECK NO DEFECTS FOUND AND RAN ENGINES, OPS CHECKED NORMAL

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