What was found
LEFT ENGINE WILL NOT SHUT DOWN, HAD TO PULL T-HANDLE TO SHUT DOWN. RIGGED CONDITION LEVER INPUT TO HMU GEAR BOX AND THE PCU.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
LEFT ENGINE WILL NOT SHUT DOWN, HAD TO PULL T-HANDLE TO SHUT DOWN. RIGGED CONDITION LEVER INPUT TO HMU GEAR BOX AND THE PCU.