The condition of these hoses is critical to the safe and reliable operation of the engine.
The Rotax maintenance manual specifies the inspection intervals for these hoses and recommends replacing them at specific intervals or if there is any sign of damage or wear. The manual also specifies the type of hose material and the maximum lifespan of the hoses.
Time limit The following components and systems must be replaced every 5 years:
• All rubber hoses of the cooling system (except GENUINE ROTAX® silicon hoses), which need to be checked by "on-condition" maintenance according to the instructions of continued airworthiness.
• All rubber hoses of the fuel system
• All rubber hoses of the lubrication system which are part of the engine supply volume and if they are not in the maintenance schedule of aircraft manufacturer
• Connecting hose of the air intake system • V-belt
In general, rubber hoses should not be placed on condition. They should be replaced at the recommended intervals or if there is any sign of damage or wear. Rubber hoses can deteriorate over time due to exposure to heat, oil, and other chemicals. They can also develop cracks, splits, or other damage that may not be visible from the outside. Replacing hoses on a regular schedule helps ensure the safety and reliability of the engine. If a hose fails during operation, it can lead to loss of power, fuel leaks, or other problems that can result in a forced landing or engine damage. Therefore, it is recommended that Rotax 912iS rubber hoses be replaced at specified intervals or when there is any sign of damage or wear.
It is not recommended to place Rubber hoses on condition, however, if you have the GENUINE ROTAX® silicon hoses (Red in color) they can be placed on condition and replaced when required.
