Service difficulty report · Decoder · Boeing 757222

Difficulty date
August 29, 2009
Submitted
September 9, 2009
Operation
Air carrier
Aircraft
N546UA
Make and model
Boeing 757222
Aircraft serial
25367
Aircraft time
66,488 hours, 19,345 cycles
Engine
Pwa PW2037
Part
Decoder
Part number
SL3924AA01
Part serial
43
Condition
Failed
Location
Hf Comm
Stage of operation
NR
How discovered
C
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 1 HF FAILS SELCAL CHECK. LEFT HF SELCAL INOP, RIGHT HF SELCAL OPS CHECKED OKAY. REPLACED SELCAL DECODER, CHECKS OKAY WITH SFO ARINC ON 6.640 MZ.