As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) HF RADIO FAILED INFLIGHT JUST AFTER ENTERING OCEANIC AIRSPACE. MAINTENANCE UNABLE TO PROVIDE A FIX IN THE AIR. FLIGHT PLANNED ON L462 WHICH REQUIRES HF EQUIPMENT. DIVERTED FOR REPAIR. RESOLUTION R&R NR 1 HF COUPLER IAW AMM 23-11-36, R&R NR 1 HF TRANCEIVER IAW AMM23-11-33 CARRIED OUT OPS CHECK OF HF SYS IAW AMM 23-11-00-710-001-A ALL OPS SYS TEST GOOD. NR 1 CHECKED SERVICEABLE.