Duchess 76
Flight Crew Multiengine
Troubleshooting
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Inflight Shutdown; Flight Crew Landed in Emergency Condition; General Maintenance Action
Aircraft
While performing an operational check flight in order to check right engine during single engine operations; at eight miles southeast of the airport; 5;500 ft. MSL; right engine was intentionally shut down and secured; two minutes after; starting with unfeathering accumulator was attempted without success; all the procedures were followed in accordance with the BE-76 POH; 1000 ft. were lost trying to get the propeller to windmill. At 4;500 ft. MSL; starting without unfeathering accumulator was attempted twice without success following the POH's checklist as well; as the left engine was already getting hotter and in order to protect the electrical system; restarting attempt was stopped; left engine was secured in accordance with the POH's checklist. Tower was notified about the situation; came back single engine; landed and vacated Runway XX and taxiway; without further problems.
BE-76 pilot reported being unable to restart right engine after an in-flight shutdown.