SDR AALA2020042099004

Service difficulty report · Unknown · Airbus A319112

Difficulty date: April 18, 2020
Submitted: April 20, 2020
Operation: Air carrier
Aircraft: N760US
Make and model: Airbus A319112
Aircraft serial: 1354
Aircraft time: 51,490 hours, 32,698 cycles
System (JASC): 2130 · Cabin Pressure Control System
Part: Unknown
Condition: Malfunctioned
Location: Cabin Pressure
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

AIRCRAFT NOT GROUNDED - UPON LEVELING AT FL 390, PRESSURIZATION SYSTEM FLUCTUATED +/- 350 FEET PER MINUTE CONSTANTLY, OUTFLOW VALVE ALSO FLUCTUATED. SWAPPED SYSTEM BY SELECTING "MAN" THEN "AUTO" WITH NO CHANGE. DESCENDED TO FL 350 AND FLUCTUATIONS STOPPED. ACCOMPLISHED TEST OF CABIN PRESSURE CONTROL(CPC) 1 AND 2 PER AMM 21-31-00, TESTED OKAY, NO 30-DAY HISTORY, OKAY FOR SERVICE.

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