Factual Information
On June 10, 2015, a Cessna 525A, registered JA021R, operated by a private owner with only the captain on board, took off from Tokyo International Airport at 14:41 JST under Instrument Flight Rules (IFR) to ferry the aircraft to Kohnan Airfield. The aircraft changed to Visual Flight Rules (VFR) about 15 nautical miles short of Kibi VOR.
Flight History
The aircraft passed near Saidaiji, a published visual reporting point 6.7 nautical miles northeast of the airfield, at approximately 3,000 ft altitude and 200 kt at 15:41. The captain received information from Kohnan Flight Service that Runway 09 was active with wind 090° at 5 kt. The captain requested to land on Runway 27 for a shorter flight path, and was asked to report on base leg or 2 nm short of Runway 27.
During the approach, the captain set approach flaps and landing flaps, and performed pre-landing checks. At 15:44:59, a CVR voice message recorded "Five hundred (500 ft)", with EGPWS data showing 458 ft AGL, airspeed 162 kt, and ground speed 165 kt. At 15:45:11, a "Too Low, Flaps" warning sounded at 205 ft AGL, 155 kt airspeed. The aircraft touched down forward of the aiming point marking. After nose wheel touchdown, the captain observed a bird (kite) on the runway halfway marking and turned slightly right to avoid it. The bird flew away. The captain applied brakes but did not feel usual deceleration. The aircraft exited the runway right of the stopway edge lights, traversed a grass area, and entered a pond used as a regulating reservoir at about 20-30 kt. The aircraft came to a stop, alarms sounded, and the captain shut down the engines and reported the accident.
Aircraft and Personnel Information
The aircraft, a Cessna 525A (serial number 525A-0380, manufactured December 14, 2007), had a total flight time of 756 hours 20 minutes. The captain held a commercial pilot certificate with type rating for Cessna 500, an instrument flight certificate, and a valid Class 1 aviation medical certificate. His total flight time was 7,211 hours 11 minutes, with 1,261 hours 21 minutes on type.
Damage
The aircraft was substantially damaged, with no fire. The forward fuselage section was damaged; the left wing leading edge and flap were damaged; the right wing flap was damaged; the nose landing gear wheel detached. The left wing flap was found in the ground flaps position, the right wing flap in the takeoff and approach flaps position. Both flaps had wrinkles and broken hinges. The airframe was flooded up to cockpit floor level; the radome and nose compartment bottoms collapsed, submerging electronic equipment.
Meteorological Conditions
Wind observed by Kohnan Flight Service at 15:45 was 100° at 4 kt. A special observation at 15:53 recorded wind 110° at 5 kt, visibility 30 km, scattered clouds at 3,000 ft, temperature 26°C, dew point 19°C, and altimeter setting 29.77 inHg. The captain remembered wind as 4 kt from the south.
Additional Information
The runway (09/27) at Kohnan Airfield is 1,200 m long and 20 m wide, with an elevation of 0 ft. The surface has grooving. A 60 m stopway and 60 m grass area lie beyond Runway 27, followed by a pond approximately 90–130 m east-west and 110 m north-south, with a depth of about 0.8 m at the time. Brake marks from both main landing gears began about 480 m from the end of the runway, indicating antiskid operation, and turned slightly right at 210 m. The nose gear left a straight track through the grass to the pond.