SDR ASAA2023070943955

Service difficulty report · Unknown · Boeing 737890

Difficulty date: July 9, 2023
Submitted: July 12, 2023
Operation: Air carrier
Aircraft: N570AS
Make and model: Boeing 737890
Aircraft serial: 35185
Aircraft time: 59,507 hours, 17,757 cycles
System (JASC): 2160 · Cabin Temperature Control System
Part: Unknown
Part number: UNKNOWN
Condition: Unknown
Location: Unknown
Stage of operation: NR
How discovered: O
Nature of condition: O
Precautionary procedure: K

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

What was found

BOTH FWD AND AFT CABIN TEMP CONTROL VERY DIFFICULT TO CONTROL. GROUNDED - YES. PERFORMED CABIN TEMPERATURE ARE UNCRONTROLLABLE FIM 21-62 TASK 905, OPS & BITE CK GOOD. FOUND BOTH CABIN TEMPERATURE SENSORS FILTERS DIRTY, REMOVED AND REPLACED BOTH FILTERS PER AMM, 21-61-06, OPS CHECK GOOD.