# SDR ASAA2019100753930

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 5, 2019
- Submitted: October 8, 2019
- Operation: Air carrier
- Aircraft: [N481AS](https://openairdocs.org/aircraft/N481AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44106
- Aircraft time: 16,561 hours, 5,395 cycles
- System (JASC): [2300 · Communications System](https://openairdocs.org/jasc/2300)
- Part: Satcom
- Condition: Malfunctioned
- Location: Nr 2
- 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/ASAA2019100753930

## Discrepancy

TRIED TO CONTACT MEDLINK ON SAT2 WAS ABLE TO TALK FOR 2 MINUTES AND THEN THE LINE WENT BLANK. UNABLE TO DISCONNECT CALL (MCDU MENU INDICATED "CALL ANSWERED" WITH NO DISCONNECT PROMPT. GROUNDED - YES. PERFORMED SATCOM COMMUNICATION SYSTEM TEST GOOD REF B737-900 AMM 23-15-00-730-801. MEDLINK COMMUNICATION TEST GOOD AMM 23-52-00.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.