# SDR ASAA2023061443647

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 14, 2023
- Submitted: June 21, 2023
- Operation: Air carrier
- Aircraft: [N933AK](https://openairdocs.org/aircraft/N933AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 44098
- Aircraft time: 4,689 hours, 1,391 cycles
- System (JASC): [3600 · Pneumatic System](https://openairdocs.org/jasc/3600)
- Part: Modulating Valve
- Part number: 632920704
- Part serial: 3483
- Condition: Out Of Range
- Location: #2 Engine
- Part time: 438 hours, 132 cycles
- 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/ASAA2023061443647

## Discrepancy

REF T/C 31-005-00, SMT MESSAGE " BLEED FAMV RVDT R" SHOWS WITH CORRELATED MAINTENANCE MESSAGE 36-12031 "ENG 2 FAMV RVDT SIGNAL IS OUT OF RANGE". GROUNDED - YES. REMOVED AND REPLACED FAN AIR MODULATING VALVE ASSY PER B737-9 AMM 36-12-03/401.

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