Helicopter AgustaWestland Merlin HM.1 Serial 50159 Register ZH859 used by Fleet Air Arm RN (Royal Navy). Aircraft history and location Aircraft History ZH859 Fleet Air Arm 2004-03-30 A EGDR crash 50159/RN39, 824Sqn /854 w/o crashed at RNAS Culdrose due to rotor hub cracking. Five injured 824 NAS Send Updates Use APP to upload photo @ (optional) When Now? / / Send