The de Havilland DHC-1 Chipmunk EI-HFC, which today flies in Irish Air Corps markings as “170”, was originally built by the de Havilland Aircraft Company as a Chipmunk Mk 22. Constructed under manufacturer’s serial number C1/0742, the aircraft entered military service with the Royal Air Force as WP857, reflecting the widespread post-war adoption of the Chipmunk as a primary military training aircraft across Europe.

During its time with the RAF, the aircraft was employed in the pilot training role, benefiting from the Chipmunk’s excellent handling characteristics, structural durability and forgiving flight behaviour. These qualities made the type an ideal platform for developing new pilots and cemented its reputation as one of the most successful training aircraft of the post-Second World War period.

Following its withdrawal from military service, the aircraft transitioned into civilian ownership in the United Kingdom, where it continued to fly on the civil register. In April 2015, the aircraft transferred to the Irish civil register and joined the Irish Historic Flight Foundation, becoming EI-HFC. Under IHFF stewardship, the aircraft was prepared for continued operation while retaining its historic identity and connection to military aviation training.

Today, EI-HFC operates as an integral part of the IHFF Chipmunk fleet, flying in authentic Irish Air Corps colours as “170”. Alongside EI-HFA and EI-HFB, it plays a key role in preserving Ireland’s aviation heritage through active flying displays, commemorative events and public engagement—ensuring the legacy of the de Havilland Chipmunk remains a living, flying part of Ireland’s aviation story.