SDR IPXA2018032127682

Service difficulty report · Sensor · Boeing 75724APF

Difficulty date: March 20, 2018
Submitted: March 21, 2018
Operation: Air carrier
Aircraft: N414UP
Make and model: Boeing 75724APF
Aircraft serial: 23854
Aircraft time: 31,615 hours, 21,489 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Sensor
Condition: Inoperative
Location: Nr 1
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: A

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

What was found

ACFT PRESSURIZED SLOWLY, FAILED TO MAINTAIN CABIN ALTITUDE. R & R THE RT PACK COMPRESSOR OUTLET SENSOR NR 1 IAW AMM 21-51-06-401. PERFORMED PRESSURE LEAKAGE RATE CHECK IAW AMM 05-51-24-702-001, TESTED OK, LEAK CHECKED RT & LT PACKS FOR LEAKS. NO LEAKS NOTED.

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