# SDR SWAA2022071528660

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 13, 2022
- Submitted: July 15, 2022
- Operation: Air carrier
- Aircraft: [N8543Z](https://openairdocs.org/aircraft/N8543Z), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 63587
- Aircraft time: 16,410 hours, 7,947 cycles
- System (JASC): [7730 · Engine Ignition Analyzer System](https://openairdocs.org/jasc/7730)
- Part: Monitor
- Part number: 241298002016
- Part serial: AO05164
- Condition: Faulty
- Location: Cockpit
- Stage of operation: DE
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2022071528660

## Discrepancy

ON DESCENT FLASHING WHITE BOX TO SOLID WHITE BOX AROUND ENG INDICATIONS.#2 ENG 5.0 #1 ENG .10 RAN ENG#2 AT IDLE TILL LANDING. NO VIBRATION FELT IN THE CABIN ON COCKPIT. / [01] PERFORMED AVM BITE PROCEDURE IAW FIM 77-31 TASK 801; FOUND AVM SYS FAULT 21; VIBRATION SENSOR SIGNAL FAULT. ACCOMPLISHED FIM 77-31 TASK 806. VERIFIED WIRING FROM AVM TO T537 AND T532 SENSORS. REMOVED AND REPLACED AVM IAW AMM 77-31-03 DUE TO ERRONEOUS BITE AND FLIGHT DATA.

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