H.P.68 Hermes
In 1944, the H.P.64 design was revised to use the H.P.66 wing and the aerodynamics cleaned up to use a single fin rather than the Halifax twin tail. At the same time the Air Ministry issued specification C.3/44 for a military transport to combine the roles of both the Halifax C.VIII and A.IX, which HP tendered for with the updated H.P.67. As the H.P.66 prototypes were cancelled, the name Hastings C.1 was transferred to the H.P.67.
As the Hastings C.1 would take more time to produce as a fully equipped military transport than a simple "empty shell" prototype for a civil transport, a similarly updated design as the H.P.68 "Hermes" was developed in parallel and two prototypes planned to be flown first.
Due to a serious shortage of draughtsmen at HP, the design of the new tail section of the H.P.67/H.P.68 was outsourced to Blackburn aircraft - a decision that was to have disastrous consequences.
The new H.P.68 was announced with a model in "Flight" magazine in October (with a fanciful registration for Handley Page Transport).
The first prototype was completed on the 1 December 1945, but with the Avro Tudor and Bristol Freighter having already flown the Hermes was rushed into the air the next day. Due to aerodynamic failing of the tail unit, the aircraft crashed immediately after take-off killing both pilots.
Work now stopped on the Hermes, and all effort went in to correcting the instability problems with the Hastings.