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SDR ASAA2015051611733

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Service difficulty report · Radio · Boeing 737990ER

FAA SDR system

Difficulty date
May 16, 2015
Submitted
May 18, 2015
Operation
Air carrier
Aircraft
N469AS
Make and model
Boeing 737990ER
Aircraft serial
41702
Aircraft time
2,873 hours, 954 cycles
System (JASC)
2310 · HF Communications System
Part
Radio
Condition
Malfunctioned
Location
Hf System
Stage of operation
CR
How discovered
9
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

BOTH HF RADIOS BECAME INTERMITTENTLY INOPERATIVE FOR ABOUT 40 MINUTES. UNABLE TO RECEIVE, NO SIDETONE WHILE ATTEMPTING TO TRANSMIT. THIS BEGAN AFTER A NORMAL POSITION REPORT, AND AFTER CHANGING FREQUENCIES. RADIOS EVENTUALLY RETURNED TO NORMAL AND NO FURTHER PROBLEMS WERE NOTED. RADIOS CHECKED OK PRIOR TO DEPARTURE AND AT OUR FIRST POSITION REPORT. ACFT GROUNDED. ACCOMPLISHED FIM TASK 23-11-806. HF 1 OPS NORMAL. GROUND VERIFICATION SUCCESSFUL. ACCOMPLISHED FIM TASK 23-11-806. HF 2 OPS NORMAL. GROUND VERIFICATION SUCCESSFUL.