What happened
On 26 July 2001, a Rutan Long-EZ, registration G-BLZM, was conducting a series of test flights to complete requirements for a Permit to Fly renewal. The flight was intended to perform a high-speed run to the aircraft's maximum permitted speed. Following an earlier flight where a burning smell was detected, the pilot had replaced oil temperature and pressure sensors due to unreliable readings.
During the final flight, the aircraft climbed to 1,500 feet with normal engine indications. As the pilot lowered the nose to accelerate to 190 kt, the engine suffered a sudden loss of power at approximately 1,000 feet while traveling at 170 kt. The pilot immediately initiated a climb and declared a MAYDAY to Shoreham approach. Despite attempts to troubleshoot the engine by switching fuel tanks, checking magnetos, and adjusting the carburettor air, the engine failed to respond.
The pilot decided to ditch the aircraft in the sea near Shoreham harbour, positioning the descent close to a large inflatable power boat to ensure rapid assistance. The aircraft struck the water at approximately 60 kt in a nose-up attitude. Upon contact, the main landing gear was torn from the airframe, causing the aircraft to pitch nose-down. The impact caused the nose section to detach and the instrument panel bulkhead to move forward, though the pilot's seat and harness remained secure. Despite the nearly full fuel tanks, the aircraft's foam and fibreglass structure remained intact, allowing it to float upright.
The investigation
The investigation examined the circumstances surrounding the engine failure and the subsequent ditching. The aircraft had been out of use for several years, and while the engine had undergone a recent overhaul, it had been experiencing persistent starting issues. Investigators also looked into the previous flight's burning smell, which had been attributed to new paint on the engine.
Findings
- The engine power loss occurred at an altitude of roughly 1,000 feet during an acceleration phase.
- The pilot successfully executed a ditching near a rescue vessel, which facilitated quick assistance.
- The loss of engine power was the primary factor in the emergency, though no specific mechanical cause was identified.
- The aircraft's construction allowed it to remain buoyant and stable following the impact.