# SDR ASAA2023030442171

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 4, 2023
- Submitted: March 6, 2023
- Operation: Air carrier
- Aircraft: [N492AS](https://openairdocs.org/aircraft/N492AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44110
- Aircraft time: 26,842 hours, 8,449 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: NR
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023030442171

## Discrepancy

#1 MACH AIRSPEED WARNING TEST WILL NOT TEST. GROUNDED - YES. ACCOMPLISHED AIRCRAFT PWR RESET PER B737-900 AMM 20-16-99OPS CHECKS NORMAL BOTH #1 AND #2 MACH TEST. REF AMM 22-11-24.

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