Service difficulty report · Coupler · Boeing 737890

Difficulty date
August 12, 2018
Submitted
August 13, 2018
Operation
Air carrier
Aircraft
N506AS
Make and model
Boeing 737890
Aircraft serial
35690
Aircraft time
38,728 hours, 11,895 cycles
Part
Coupler
Part number
8220987004
Part serial
154765
Condition
Inoperative
Location
Nr 2 Hf Antenna
Part time
39,180 hours, 11,661 cycles
Stage of operation
NR
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

NR 2 HF WAS WEAK, SCRATCHY, BUT READABLE TRIED FOUR DIFFERENT FREQUENCIES. ACFT GROUNDED. REMOVED AND REPLACED THE NR 2 HF ANTENNA COUPLER IAW AMM 23-11-61-400-801, OPS NORMAL IAW AMM 23-11-00-730-801.