What was found
PRE FLT 5581 - STL - REMOVED AND REPLACED NR 2 PACK DUCT OVERTEMP SWITCH AND THE CROSSOVER DUCT. OPS CHECKED GOOD WITH NO ADDITIONAL SMOKE PRESENT.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PRE FLT 5581 - STL - REMOVED AND REPLACED NR 2 PACK DUCT OVERTEMP SWITCH AND THE CROSSOVER DUCT. OPS CHECKED GOOD WITH NO ADDITIONAL SMOKE PRESENT.