List of last seen helicopters in Gwynedd SikorskyS-92A 92-0251 SRG936 / G-MCGK List of helicopters operators in Gwynedd Caernarfon sector Caernarfon Defence Evaluation and Research Agency Llanbedr Defence Research Agency Llanbedr Royal Aerospace Establishment Llanbedr Royal Aircraft Establishment Llanbedr Testing & Evaluation Establishment Llanbedr Wales Air Ambulance Caernarfon @ (optional) Send