What was found
LOUD WHINING NOISE WHEN LEFT PACK ON AT GATE, GOES AWAY WHEN PACK OFF. REGARDLESS OF RIGHT PACK ON OR OFF. GROUNDED - YES. L/H AIR CYCLE MACHINE SEIZED. REMOVED AND REPLACED L/H ACM REF B737-9 AMM 21-51-04. OPS AND LEAK CHECK GOOD.
- Difficulty date
- October 23, 2022
- Submitted
- October 27, 2022
- Operation
- Air carrier
- Aircraft
- N915AK
- Make and model
- Boeing 7379
- Aircraft serial
- 44080
- Aircraft time
- 4,886 hours, 1,544 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Acm
- Part number
- 22064002
- Part serial
- 16993
- Condition
- Seized
- Location
- Left
- Part time
- 4,927 hours, 1,559 cycles
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.