SDR ASAA2016071517397

Service difficulty report · Satcom · Boeing 737990ER

Difficulty date: July 15, 2016
Submitted: July 18, 2016
Operation: Air carrier
Aircraft: N474AS
Make and model: Boeing 737990ER
Aircraft serial: 40715
Aircraft time: 4,162 hours, 1,379 cycles
System (JASC): 2300 · Communications System
Part: Satcom
Condition: Malfunctioned
Stage of operation: NR
How discovered: O
Nature of condition: O
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DISPATCH AND MED LINK UNABLE TO HEAR OUR SATCOM TRANSMISSIONS ON EITHER SATCOM NR 1 AND 2. BOTH CAPT AND FO TRIED TRANSMITTING MULTIPLE TIMES. WE CAN HEAR THEM BUT THEY CAN'T HEAR US. GROUNDED - YES. ACCOMPLISHED SATCOM COMMUNICATION SYSTEM TEST, REF B737-900 AMM 23-15-00. BOTH CAPT'S & F/O'S TRANSMIT & RECEIVED NORMAL. ALSO COMMUNICATED USING ALL 3 CABIN MEDLINK STATION NORMAL.