# SDR ASAA2017040920409

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 9, 2017
- Submitted: April 11, 2017
- Operation: Air carrier
- Aircraft: [N596AS](https://openairdocs.org/aircraft/N596AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35688
- Aircraft time: 34,043 hours, 10,336 cycles
- System (JASC): [2300 · Communications System](https://openairdocs.org/jasc/2300)
- Part: Satcom
- Condition: Locked
- Location: Cockpit
- 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/ASAA2017040920409

## Discrepancy

SATCOM LOCKED UP 4 HOURS INTO ETOPS FLIGHT. PERFORMED SATCOM LOCKUP ABNORMAL PROCEDURE. GROUNDED - YES. VERIFIED SATCOM OPS CHECK OK, REF FIM TASK 23-15 TASK 801.

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