# SDR AALA202109153766

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 12, 2021
- Submitted: September 15, 2021
- Operation: Air carrier
- Aircraft: [N336SR](https://openairdocs.org/aircraft/N336SR), registered now
- Make and model: Boeing 737-8
- Registry model: [Boeing 737-8](https://openairdocs.org/model/boeing-737-8) (OpenAirDocs)
- Aircraft serial: 44482
- Aircraft time: 1,258 hours, 552 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: A/C Pack
- Condition: Frozen
- Location: Right
- Stage of operation: CL
- How discovered: O
- Nature of condition: E
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202109153766

## Discrepancy

AIRCRAFT WAS GROUNDED: LOUD NOISE HEARD ON RH SIDE OF AIRCRAFT, FLIGHT RETURNED TO FIELD. ACCOMPLISHED FUNCTIONAL TEST OF LH AIR CONDITIONING PACK IAW AMM 21-00-00 DUE TO INTERNAL ICING CONDITION, OPS CHECK GOOD.

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