What was found
(CAN) HF #1 WOULD OPERATE FOR FOUR HOURS IN FLIGHT AND QUIT ALSO WHEN KEYING HF #1 AIRCRAFT PITCH WOULD CHANGE AND THROTTLES WOULD ROLL BACK. LH TRANSCIEVER, CONTROL PANEL AND COUPLER REPLACED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) HF #1 WOULD OPERATE FOR FOUR HOURS IN FLIGHT AND QUIT ALSO WHEN KEYING HF #1 AIRCRAFT PITCH WOULD CHANGE AND THROTTLES WOULD ROLL BACK. LH TRANSCIEVER, CONTROL PANEL AND COUPLER REPLACED.