Rotax 503 aircraft engine, Rotax 503 aircraft engine fan tower
failure.
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Rotax 503 aircraft engine fan tower failure.
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Aircraft: Any ultralight aircraft using the 503 Rotax engine.
Problem area: Fan tower
Incident report:
Several owners of ultralights using the 503 Rotax engine have reported loss of power and
or engine seizure. Upon closer inspection it was found that the shroud webbing used to
support the fan had broken locking up the fan and stopping the engine.
Suggestions:
It is recommended that if you have a 503 engine you check the webbing for abnormal wear or
cracks. The only solution is to replace the fan shroud housing with a new one. |
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Rotax 503 fan tower failure. |
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