# SDR ASAA2021081535717

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 15, 2021
- Submitted: August 18, 2021
- Operation: Air carrier
- Aircraft: [N413AS](https://openairdocs.org/aircraft/N413AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 35205
- Aircraft time: 31,562 hours, 10,090 cycles
- System (JASC): [2300 · Communications System](https://openairdocs.org/jasc/2300)
- Part: Satcom
- Condition: Failed
- Location: Nr 2
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021081535717

## Discrepancy

ATTEMPT TO CALL MEDLINK ON #2 SAT FAILED. CRUISE ALTITUDE 34,000' MODES: READY, MAKE CALL, DIALING->THEN STRAIGHT BACK TO READY. GROUNDED - YES. REF LOG 60222568 AFTER ADJUSTING OBS ACP, SAT COM #2 OPS NORMAL FROM MEDLINK SYSTEM REF B737-900 AMM 23-15-00.

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