Operational History
Production aircraft, designated Henley III, entered service with Nos. 1, 5 and 10 Bombing and Gunnery Schools, as well as with the Air Gunnery Schools at Barrow, Millom and Squires Gate. Unfortunately, it was soon discovered that unless the aircraft were restricted to an unrealistically low tow speed of 220 mph (355 km/h), the rate of engine failures was unacceptably high. This resulted in Henleys being withdrawn from this role and relegated to towing larger drogue targets with anti-aircraft co-operation units. Predictably, the Henley proved to be even more unsuited to this role, and the number of engine failures increased. Several Henleys were lost after the engine cut out and the drogue could not be released quickly enough. A solution was never found to this problem, and in mid-1942 the Henley was withdrawn from service, and replaced by Boulton Paul Defiants, as well as purpose-built Miles Martinets.
Read more about this topic: Hawker Henley
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