'RAF Cosford plane identified' - Your Letters: March 28

COSFORD AIRCRAFT IS IDENTIFIED
The picture of Bob Mitchell at the controls of an 'unidentified plane' at the RAF Cosford Air Show in 1989 (Star p11 March 24) shows a Fairchild PT 23, serial no N49272. At the time it was the only one in Europe. It went on to lead the PT Flight at a number of Air Shows, commemorating the training of many RAF aircrew in the USA during World War II.
It remains in Shropshire, although at the moment it is not airworthy.
Al McLean, Telford
WHAT HAPPENED TO HEATHROW?
The nationalised British Coal had three separate dedicated power supplies to Littleton Colliery Huntington with three separate transformers all operating separately or that could be interconnected.
Privately-owned Heathrow is the main gateway to the United Kingdom for non-European visitors, and a major hub for international flights with more than 26 per cent of the UK's exports (by value) going through Heathrow.