What was found
IN FLIGHT, LEFT ALTIMETER AND VERTICAL SPEED BECAME INOP ALONG WITH "MACH TRIM". REPLACED ADC NR 1 IAW ST34-220-1016 AND MM 34-13-01. OPERATIONAL CHECKS GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
IN FLIGHT, LEFT ALTIMETER AND VERTICAL SPEED BECAME INOP ALONG WITH "MACH TRIM". REPLACED ADC NR 1 IAW ST34-220-1016 AND MM 34-13-01. OPERATIONAL CHECKS GOOD.