SDR ASAA2012071092519

Service difficulty report · Controller · Boeing 737890

Difficulty date: July 1, 2012
Submitted: July 12, 2012
Operation: Air carrier
Aircraft: N559AS
Make and model: Boeing 737890
Aircraft serial: 35178
Aircraft time: 22,118 hours, 6,724 cycles
Engine: Cfmint CFM567B27
System (JASC): 2150 · Cabin Cooling System
Part: Controller
Condition: Malfunctioned
Location: A/C Pack
Stage of operation: TX
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

ON RECALL, ACFT MASTER CAUTION LIGHT, RIGHT PACK LIGHT ILLUMINATED LIGHT EXTINGUISHED WHEN MASTER CAUTION RESET. ACCOMPLISHED PACK/ZONE TEMP CONTROLLER BITE IAW FIM 21-62-801. NR2 CONTROLLER SHOWS THIS PACK TEMP CONTROL VALVE FAULTED ON PREVIOUS FLT. RESET CONTROLLER, OPERATED PACKS, ACCOMPLISHED BITE AGAIN, NO FAULTS FOUND.