What was found
INTERPHONE BOX HAS FEEDBACK NOISE ON CHANNEL 2. FOUND SWITCHES S2 THROUGH S11, VOLUME CONTROL R72, VOLUME AND SELECTOR KNOBS BAD. ALSO FOUND CORROSION ON VOLUME AND SELECTOR KNOBS. CLEANED AND REPLACED. REPAIRED. BENCH CHECK GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
INTERPHONE BOX HAS FEEDBACK NOISE ON CHANNEL 2. FOUND SWITCHES S2 THROUGH S11, VOLUME CONTROL R72, VOLUME AND SELECTOR KNOBS BAD. ALSO FOUND CORROSION ON VOLUME AND SELECTOR KNOBS. CLEANED AND REPLACED. REPAIRED. BENCH CHECK GOOD.