# SDR ASAA2022052438498

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 24, 2022
- Submitted: June 14, 2022
- Operation: Air carrier
- Aircraft: [N921AK](https://openairdocs.org/aircraft/N921AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43337
- Aircraft time: 2,114 hours, 612 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Modulating Valve
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022052438498

## Discrepancy

PERFORMED ASA T/C 31-005-00, FOUND SCHEDULED MAINT TASK MSG BLEED FAMV RVDT L ON #1 ENGINE. GROUNDED - YES. ON DEFERRAL.

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