What was found
PILOT REPORT: PACK NR 1 PRODUCING SMOKE AND FUMES AFTER NR 1 ENGINE START. AIRCRAFT RETURNED TO BLOCK, REMOVED AND REPLACED NR 1 PACK PLENUM CHAMBER, IAW AMM 21-52-22 PB 401.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PILOT REPORT: PACK NR 1 PRODUCING SMOKE AND FUMES AFTER NR 1 ENGINE START. AIRCRAFT RETURNED TO BLOCK, REMOVED AND REPLACED NR 1 PACK PLENUM CHAMBER, IAW AMM 21-52-22 PB 401.