As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE VISIT: MAINTENANCE REPORTS L ENG TR CNT CB AT P11 - POPPING WITH STOW/DEPLOY THROTTLE HANDLE. FOUND SWITCH S4 AT MICRO SWITCH PACK ASSY PINS 21, 22, AND 23 SHORTED - IN BOTH STOW. REMOVED AND REPLACED S4 AT MICRO SWITCH PACK ASSY. TR CONT CB STAYS IN. L/TR OPS CHECK OK. MICROSWITCH PACK INSTALLATION CHECK OK IAW AMM 22-32-04.