SDR HEEA966854

Service difficulty report · Transceiver · Bolkms BK117B2

Difficulty date
March 13, 1996
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N134AE
Make and model
Bolkms BK117B2
Aircraft serial
7237
Part
Transceiver
Part number
40001278500
Condition
Failed
Location
Cockpit
Stage of operation
NR
Nature of condition
O
Precautionary procedure
K

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

What was found

WILL NOT TRANSMIT. FOUND NO 29V ON POWER SUPPLY. REPLACED U2 (IC), U1 (IC),VR1 (DIODE) AND REPAIRED POWER SUPPLY. SYNTHESIZER BOARD HAS BAD TUNING VOLTAGE. REPLACED U11 (IC), U12 (IC), U13 (IC), U9 (IC), U10 (IC). REPAIRED. FOUND WEAK RECEIVER SENSE AT 406MHZ.ALIGNED THE RECEIVER AND ADJUSTED SYNTHESIZER PRESELECTOR VOLTAGE TO SPECS, REPAIRED. FOUND TRANSMIT TONE SET A CODE 11 FOR A TONE OF 91.5HZ DRIFTING OFF FREQUENCY. REPLACED U14 (IC) ON AUDIO BOARD. REPAIRED. BENCH CHECK GOOD.