Delta Aviation Engineering. Specialists in all de Havilland aircraft. Based at Sywell Aerodrome, Northampton. Restoration, repairs and maintenance work undertaken. Call Ian Castle on 0870 446 4467. E-mail: engineering@deltaaviation.co.uk

Mike Taylor Langley advises all visitors to Woburn that he will be manning his aircraft instrument repair and overhaul stand on Saturday and Sunday on which he will have a calibration machine particularly suited to Air Speed Indicators. If you have an instrument that needs checking, take it to Woburn and meet Mike.