SDR ASAA2020030432346

Service difficulty report · Unknown · Boeing 737990ER

Difficulty date: March 2, 2020
Submitted: March 4, 2020
Operation: Air carrier
Aircraft: N467AS
Make and model: Boeing 737990ER
Aircraft serial: 36362
Aircraft time: 22,527 hours, 7,357 cycles
System (JASC): 2130 · Cabin Pressure Control System
Part: Unknown
Condition: Malfunctioned
Location: Cabin Pressure
Stage of operation: LD
How discovered: O
Nature of condition: J
Precautionary procedure: K

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

What was found

AFTER LANDING PRESSURIZATION PANEL SHOWED AUTO FAIL AND ALTN. GROUNDED - YES. REF B737-900 FIM 21-31 TASKS 827 & 802. CYCLED PRESSRZN MODE SELECTOR TO AUTO, MAN, BACK TO AUTO. NO FAULTS. DCPC #1 BITE SHOWED LEG 00, FAULT MESSAGE "11" OFV LRU FAIL. ACCOMPLISHED DCPC 1 & 2 GROUND TESTS, NO FAULTS. OPS TEST NORMAL.