Aircraft accident in vicinity of Torbacka aerodrome 28.4.2009

[yatsevsky]

Этот репорт прислал мой инструктор из Латвии. Случай примечательный тем что еще раз отвечает на вопрос: возвращаться или нет на полосу в случае отказа двигателя во время первоначального набора высоты после взлёта.
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Aircraft: Dynamic WT 9
Engine: Rotax 912 UL, 80 hp
Aircraft damage: Aircraft was destroyed in forced landing
Persons on board: 2

Pilot in Command's experience
Total experience: 53 hours
On type: approximately 10h

Weather
Wind: Approximately 240-255 degrees 3-4 knots.
Visiblity: Good

Events during flight

Accident happened to an ultra-light aircraft (OH-U474) on a flight from Nummela to Helsinki - Malmi via Torbacka. At 20.55 aircraft landed on grass runway runway 27 (360 feet long and 15 meters wide) of Torbacka aerodrome. After landing the pilot taxied airplane to parking area located in vicinity of runway 27 threshold. After a brief walk the pilot made all relevant checks including an external inspection on the aircraft. GPS data indicated that the engine was started at 21.02. He informed on the aerodrome frequency that he was taxing on runway 27 for take-off and after departure was proceeding to Helsinki-Malmi. In preperation for the flight or during flight the pilot did not use a specified or aircraft manual check-lists.

At 21.05 pilot started take-off from runway 27. At approximately 43 feet the pilot started a turn to the right towards Helsinki-Malmi airport. Periodically the angle of bank reached 40 degrees. On right hand downwind the engine stalled at time 21.06 at the height of approximately 215 feet. Pilot turned 90 degrees towards the runway located behind a patch of woods with a bank of 60 degrees. After clearing the woods pilot observed a power line but due to low speed and height was unable to clear it. Aircraft nose landing gear cut the highest line of the 20KW powerline. Aircraft control was lost and it hit the ground close to aerodrome parking area. During the forced landing aircraft cockpit remained intact. Both the pilot and passenger were able to exit the aircraft with little effort. Afterwards the passenger told he had removed keys from the magneto switch, turned off the master switch and secured the ballistic recovery chute.

Conclusion

1. Pilot held a valid ultra light pilot licence and medical certificate
2. Pilot had low level of experience
3. Aircraft certificate of airworthiness was valid.
4. VMC prevailed at Torbacka aerodrome and in the vicinity. Time to sunset was 8 minutes and twilight was 52 minutes after the sunset.
5. During investication no mechanical deflects were found present prior to accident.
6. Aircraft was equipped with a portable ballistic recovery chute. CAA had granted a temporary permit for the aircraft to exceed the maximum take-off mass of 450 kg by 22,5 kg. On mass and balance schedule the maximum take-off mass was marked as 475,5 kg.
7. At take-off the take-off mass of the aircraft was 495 kg. The maximum take-off mass availble had been exceeded by 22,5 kg. Balance was within the limits.
8. Aircraft had been over weight already on arrival to Torbacka aerodrome.
9. During preparation for flight pilot had not used a checklist
10. Soon after take-off pilot began climbing turn to the right and continued the climb at low speed.
11. Aircraft engine stalled 47 seconds after take-off.
12. During investigation the engine run was found the be running 45 seconds after fuel shutoff was turned on.
13. After engine failure pilot turned towards the runway with high angle of bank.
14. After engine failure pilot was unable to reach or maintain the best glide speed.
15. Before ground impact aircraft cut a 20 kW power line which caused a small fire on the left fuselage. The burned out itself.

Cause of accident

Probable cause of accident was that before take-off or during take-off the fuel shutoff valve was turned to OFF position which caused the engine the stall during the climb. Forced landing failed due the selection of forced landing surface, low altitude and speed. This was affected by pilot's low experience, hurry and inadequate checks before take-off.

[Геннадий Хазан]

возвращаться или нет на полосу в случае первоначального набора после взлёта.

Может быть Вы или слово не дописали , или что то иное имели ввиду. Поясните пж

[yatsevsky]

возвращаться или нет на полосу в случае первоначального набора после взлёта.

Может быть Вы или слово не дописали , или что то иное имели ввиду. Поясните пж

Спасибо! Исправил.

[Fram]

Ну, если считать, что в основном все не очень "аглицки" говорящие , то очень информативно...

[yatsevsky]

Ну, если считать, что в основном все не очень "аглицки" говорящие , то очень информативно...

Постараюсь перевести если большинству будет интересно. Можно также просто загнать весь текст в Гугл Транслейт. Извините, не было просто времени переводить, а сама информация показалась актуальной и интересной.

[Fram]

Ну, блин... Почти как "Быть или не быть..." Конечно интересно, и информативно очень. Вчера буквально, за рюмкой чая говорили, что обсуждение проблем в формате "без галстука" намного информативнее и полезнее, чем в описании в официальных хрониках. Тем более "отказ до первого", как я понял. Пишите, будет очень полезно. С ув.

[Геннадий Хазан]

Любая информация по таким событиям , с анализом  метеоусловий , и техники пилотирования пилотом ВС , который благополучно произвёл посадку , достаточно бесценный опыт.

[Max405]

Нечего там переводить особо. Неопытный пилот на дорогом ультралайте не прочитал и не выполнил check-list, взлетел с закрытыми баками и перегруженным, начал разворот на малой высоте и скорости, чуть было не свалился, после отказа движка неоправданно "круто" развернулся на полосу, потерял высоту, цепанул ЛЭП и рюхнулся на землю. Самолет в хлам, пилот и пассажир живы (имхо, чудом)... Вывод один - ВСЕГДА читать и выполнять check-list!!! И учиться-учиться-учиться летать...

[Andreas]

В рубашках родились. Живы с таким количеством вводных...

[Тэги:]

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