# SDR ASAA2017072821489

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 28, 2017
- Submitted: July 31, 2017
- Operation: Air carrier
- Aircraft: [N538AS](https://openairdocs.org/aircraft/N538AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 41188
- Aircraft time: 20,592 hours, 6,008 cycles
- System (JASC): [2300 · Communications System](https://openairdocs.org/jasc/2300)
- Part: Transceiver
- Part number: 8222835002
- Part serial: 40FP4L
- Condition: Failed
- Location: Satcom
- Part time: 17,724 hours, 5,159 cycles
- Stage of operation: NR
- 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/ASAA2017072821489

## Discrepancy

SATCOM NOT PROMPTED ON MCDU PERFORMED QRH FOR LOCK-UP. STLL NOT PROMPTED.  ACFT GROUNDED.  VERIFIED NO PROMPT ON MCDU FOR SAT. REMOVED & REPLACED IRIDIUM TRANSCEIVER IAW AMM 23-15-00-400-801. CHECKED GOOD. SATCOM LINK TEST SUCCESSFUL. OPS NORMAL.

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