# SDR SWAA2024062103281

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 19, 2024
- Submitted: June 21, 2024
- Operation: Air carrier
- Aircraft: [N8870K](https://openairdocs.org/aircraft/N8870K), registered now
- Make and model: Boeing 737-8
- Registry model: [Boeing 737-8](https://openairdocs.org/model/boeing-737-8) (OpenAirDocs)
- Aircraft serial: 42679
- Aircraft time: 3,708 hours, 2,088 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Part number: UNKNOWN
- Condition: Uncontrollable
- Location: A/C Pack
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2024062103281

## Discrepancy

PACKS ARE GOING TO HIGH FLOW; UNCONTROLLED. HOT OIL SMELL AND COCKPIT TEMP BECAME HOT. THEN PACKS WENT TO NORMAL FLOW AND ICE SHOT OUT OF VENTS. SUSPECT LEFT PACK IS UNCONTROLLABLE.<[01] FOUND LT PACK ZONE DUCT TEMP EXTREMELY LOW AND NOT MODULATING WITH ICE ON CONDENSER. REMOVED AND REPLACED LT PACK STANDBY TEMP CONTROL VALVE IAW AMM 21-51-11; OPS CHECK & LEAK CHECK GOOD. PACK ZONE DUCT TEMP NOW NORMAL.

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