SDR ASAA2015060711958

Service difficulty report · Unknown · Boeing 737990ER

Difficulty date: June 7, 2015
Submitted: June 8, 2015
Operation: Air carrier
Aircraft: N471AS
Make and model: Boeing 737990ER
Aircraft serial: 41703
Aircraft time: 2,482 hours, 830 cycles
System (JASC): 2160 · Cabin Temperature Control System
Part: Unknown
Condition: Unknown
Location: Cabin Temp
Stage of operation: IN
How discovered: 9
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

PAX REPORT OF HOT TEMPS IN THE FWD CABIN. ACCOMPLISH BITE TEST OF NR 1 & NR 2 PACK ZONE TEMP CONTROLLERS AND REPLACE TEMP SENSOR FILTERS. ACFT GROUNDED. PERFORMED BITE TEST OF NR 1 & 32 PACK ZONE TEMP CONTROLLERS. NO FAULTS LOGGED. REPLACED THE FWD AND AFT ZONE PAX CABIN TEMP SENSOR FILTERS IAW AMM 21-61-06/201. CHECKED AIR FLOW FROM ROW 6 TO 17 USING APU SUPPLIED AIR TO PACKS. FLOW WAS GOOD.