SDR CALA2025070906388

Service difficulty report · A/C Pack · Boeing 737924

Difficulty date: July 7, 2025
Submitted: July 9, 2025
Operation: Air carrier
Aircraft: N32404
Make and model: Boeing 737924
Aircraft serial: 30121
Aircraft time: 66,582 hours, 27,792 cycles
System (JASC): 2150 · Cabin Cooling System
Part: A/C Pack
Condition: Malfunctioned
Location: Zone 100
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: B, A

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

What was found

LOSS OF PRESSURIZATION AT 14000. CABIN ALT 10K. EMERG DECLARED CREW REPORTED LOSS OF PRESSURIZATION AT 14500. NO MASKS DROPPED. POOR RT PACK CONTROL AND LT PACK ON MEL. DECLARED EMERGENCY CONFIRMED REPAIRS WITH MX. OPS CHECK NORMAL PER AMM 21-00-05-780-802. NO FAULTS NOTED.