# SDR ASAA201806114993

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 7, 2018
- Submitted: June 11, 2018
- Operation: Air carrier
- Aircraft: [N477AS](https://openairdocs.org/aircraft/N477AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 40716
- Aircraft time: 12,004 hours, 3,925 cycles
- System (JASC): [2300 · Communications System](https://openairdocs.org/jasc/2300)
- Part: Satcom
- Condition: Malfunctioned
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA201806114993

## Discrepancy

SATCOM WOULD NOT TRANSMIT, BUT DID RECEIVE.   ACFT GROUNDED. PERFORMED SATCOM LOCKUP PROCEDURE FROM QRH 5.4. SATCOM OPS NORMAL.

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