SDR ASAA2022051038255

Service difficulty report · A/C Pack · Boeing 737890

Difficulty date: May 10, 2022
Submitted: May 11, 2022
Operation: Air carrier
Aircraft: N514AS
Make and model: Boeing 737890
Aircraft serial: 35193
Aircraft time: 49,089 hours, 14,470 cycles
System (JASC): 2160 · Cabin Temperature Control System
Part: A/C Pack
Part number: UNKNOWN
Condition: Faulted
Location: Unknown
Stage of operation: NR
How discovered: V
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

ON MASTER CAUTION RECALL RH PACK ILLUMINATED ON MASTER CAUTION RESET, RH PACK LT EXTINGUISHED. GROUNDED - YES. PERFORMED BITE TEST PER B737-800 FIM TASK 21-62 TASK 801, FOUND FAULT MESSAGE ON ZONE TEMP CONT 2 (TCV), CLEARED FAULT AND RAN PACKS ,PACKS TESTED OK AND NO FAULTS NOTED.