What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS ON SHUTDOWN, ENG #1 KEPT RUNNING WITH ENG #1 MASTER SWITCH IN OFF SHUTDOWN ENG #1 WITH FIRE SWITCH REPEAT. MAINTENANCE REMOVED AND REPLACED ENG 1 MASTER SWITCH IAW ESPM 20-45-21.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS GROUNDED: PILOT REPORTS ON SHUTDOWN, ENG #1 KEPT RUNNING WITH ENG #1 MASTER SWITCH IN OFF SHUTDOWN ENG #1 WITH FIRE SWITCH REPEAT. MAINTENANCE REMOVED AND REPLACED ENG 1 MASTER SWITCH IAW ESPM 20-45-21.