What was found
AFTER STARTING NR 3 ENGINE, AC FREQUENCY METER PEGGED OUT AND SMOKE POURED OUT OF FREQ (AC) SELECTOR SWITCH. REMOVED AND REPLACED AC FREQ METER SELECTOR SWITCH AND OPS CHECK OKAY IAW B727 MM 24-20-00.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AFTER STARTING NR 3 ENGINE, AC FREQUENCY METER PEGGED OUT AND SMOKE POURED OUT OF FREQ (AC) SELECTOR SWITCH. REMOVED AND REPLACED AC FREQ METER SELECTOR SWITCH AND OPS CHECK OKAY IAW B727 MM 24-20-00.