What was found
AFTER DEPARTING LCK MODE "C" REPORTED 200FT LOW AIRCRAFT RETURNED TO LCK. AVIONICS REMOVED AND REPLACED ENCODING ALTIMETER OPS CHECKS GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AFTER DEPARTING LCK MODE "C" REPORTED 200FT LOW AIRCRAFT RETURNED TO LCK. AVIONICS REMOVED AND REPLACED ENCODING ALTIMETER OPS CHECKS GOOD.