SDR HEEA071976

Service difficulty report · Transceiver · Bell 412

Difficulty date
April 5, 2001
Submitted
April 18, 2001
Operation
General aviation
Aircraft
N142PH
Make and model
Bell 412
Aircraft serial
33150
Aircraft time
4,765 hours
Part
Transceiver
Part number
064102300
Part serial
1903
Condition
Weak
Location
Cockpit
Stage of operation
IN
How discovered
C
Nature of condition
L
Precautionary procedure
K

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

What was found

TRANSMITS UNREADABLE. PERFORMED PRELIMINARY INSPECTION AND TESTED. FOUND MODULATION VERY WEAK. ADJUSTED MIC GAIN, TRANSMIT POWER, AND SIDETONE. FOUND MODULATION WOULD BECOME DISTORTED AFTER KEYED UP A FEW TIMES. REPLACED Q109 AND Q110 MODULATORS. REPAIRED. REMOVED CORROSION FROM CHASSIS. BENCH CHECK GOOD.

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