Yug Line | Bureau of Aircraft Accidents Archives

The crew was engaged in a crop spraying mission on rice paddy field located in Prototskiye (Krasnoarmeisk district of the Krasnodar region). Two minutes after takeoff, while flying at a height of about 50 metres, the engine lost power. The captain attempted an emergency landing when the aircraft nosed over and came to rest upside down, some 2 km east of Prototskiye. Those parts of the fuselage which were above the water were consumed by the erupting fire and both pilots escaped uninjured.

Probable cause:

The accident with An-2 RA-17890 aircraft was caused by its nosing-over during the emergency landing at the submerged rice bay. The emergency landing was due to the engine power loss in flight caused by the destruction of the can type combustor of the exhaust collector and burnout of the carburetor intake valve with the following high-temperature gases ingestion in the intake areas of the engine carburetor. The fatigue destruction of the can type combustor of the exhaust collector was caused along the main crack near the intake flex socket, it started from the surface of the damaged inlet port under the tube attachment pin towards the exhaust collector. By the moment of the main crack formation both inlet ports in left can type combustor under the tube attachment pin towards the exhaust collector had intolerable damage and size. During the last overhaul of the engine exhaust system of An-2 RA-17890 aircraft the left can type combustor had intolerable damage in its attaching lug to the exhaust collector which wasn't eliminated. The destruction of the inlet port valve was caused by the fusion of the boundaries of it material grains in conditions of acute temperature exposure induced by the destruction of the left can type combustor wall towards the main crack. Inadequate material (aluminum alloy D-16) of the valve specified by the drawing of aluminum allow AL-9T contributed to the valve destruction.

Crash of a PZL-Mielec AN-2R in Vostochnaya: 1 killed

Date & Time: Mar 23, 2013 at 1503 LT

Type of aircraft:

PZL-Mielec AN-2

Operator:

Yug Line

Registration:

RA-02203

Flight Phase:

Takeoff (climb)

Flight Type:

Spraying (Agricultural)

Survivors:

Yes

Site:

Lake, Sea, Ocean, River

Schedule:

Vostochnaya - Vostochnaya

MSN:

1G234-34

YOM:

1989

Location:

Country:

Region:

Crew on board:

Crew fatalities:

Pax on board:

Pax fatalities:

Other fatalities:

Total fatalities:

Captain / Total flying hours:

5536

Captain / Total hours on type:

2710.00

Copilot / Total flying hours:

Copilot / Total hours on type:

Aircraft flight hours:

3612

Aircraft flight cycles:

16267

Circumstances:

The crew was engaged in a crop spraying flight on agricultural field in Vostochnaya, about 70 km northeast of Krasnodar. The day prior to the accident, the engine failed in flight and the crew made a forced landing in a field. As the carburetor was broken, it was replaced and an engine test run was performed. On 23 March, one minute after takeoff, while climbing to a height of 30 metres, the engine failed again. The crew attempted an emergency landing when the aircraft stalled and crashed in the Bakhotinski Lake, coming to rest upside down. The copilot escaped with minor injuries while the captain was killed. The wreckage was recovered three days later.

Probable cause:

The accident was caused by its nosing during the emergency landing on water surface. The emergency landing was caused by the engine power loss and flameout in the air due to the destruction of the exhaust collector can type combustor and burn through of the carburetor intake valve followed by high temperature burnt gases ingestion into the engine carburetor intake. The destruction of the exhaust collector can type combustor most probably occurred on the corrosion mechanism energized in conditions of the material heat during the engine operation using motor petrol. Power factor resulted in initial crack formation most probably was caused by residual tenses in the material of manufacture origine caused during can type combustor manufacture. In accordance with the passport the latest can type combustor overhaul was performed on January 27, 2009 in "Shakhtinsky ARZ DOSSAAF" CJSC. The commission didn't find the actual confirmation of the can type combustor overhaul as the marking at the single remained label indicates that the specified section had overhaul at the plant n° 420GA in October 1983.

Final Report: