# SDR ASAA2023072044141

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 20, 2023
- Submitted: July 24, 2023
- Operation: Air carrier
- Aircraft: [N952AK](https://openairdocs.org/aircraft/N952AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 60390
- Aircraft time: 3,073 hours, 910 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Modulating Valve
- Part number: 632920703
- Part serial: 2263
- Condition: Faulty
- Location: Engine #1
- Part time: 3,114 hours, 922 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023072044141

## Discrepancy

REF T/C 31-005-00SMT "BLEED FAMV RVDT L" MESSAGE SHOWS WITH CORROLATED MAINTENANCE MESSAGE 36-12030 "ENG 1 FAMV RVDT SIGNAL IS OUT OF RANGE". GROUNDED - YES. (RESOLVED ON W/O: 1961274 TASKCARD: N/R-00001 ) REMOVED AND REPLACED FAMV ON #1 ENG. PERFORMED ELECTRICAL LRU REPLACEMENT TEST AND PNEUMATIC ENGINE ON-SYSTEM TEST. BOTH TESTS PASSED. OPS CHECK GOOD. REF AMM 36-12-03. SEAMC ANDY NOTIFIED.

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