As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3308 IN DTW. CAPT. AIRSPEED INDICATION AND CAPT ALTIMETER FAILED INFLIGHT. MAINTENANCE DRAINED AND PURGED NR 1 PITOT/STATIC SYSTEM, REPLACED AIR DATA COMPUTER, PN 622-44010-001 SN/ON 17465, PN/OFF 822-0370-123 SN/OFF 4127. ALL CHECKS GOOD IAW SF340 MM/CHAP 34.