What utter bilge, Derrick Holt (Viewpoints, September 15) writes about the north American Mustang.

Yes, the Mustang fitted with Allison 1,100 HP engines was unsuitable for combat, but when the Rolls Royce Merlin engine was fitted in the Mustang, it was a different matter.

A super fighter of WWII, the air frame was of British design, the successful engine was British. The only American part of the craft were the stars on the wings.

GLYN LIMMER, Roosevelt Road, Long Hanborough