As with all a/c certain components have life times, expressed in hours in use and calendar time between overhaul. The YAK series of aircraft are no different. The CAA publication CAP 543 is a very convenient means of recording these. The example shown below is not an exhaustive list but those on page one only!!
All a/c coming to the register or those renewing Permits to fly must have this document raised.
|Description||Part Number||Life Limit
|Vacuum Pressure Gauge||MV-16K||1500/6|
|Fuel Pressure Transducers||P-1B||1000/4|
|Oil Pressure Transducers||PM-15B||1000/4|
|Bottles Pressure Gauge||2M-80K||1000/4|
|Flexible pipes||as fitted*||-/6|
The above life’s are times between, check calibration, OH or test.
Propeller overhaul is £3450 GBP, pipes £65 each with 26 fitted on the YAK 52, 20 on YAK 50 and 32 on YAK 18T.
Remaining life items can be accomplished within 6 hours testing and works.
The above is not a definitive list, refer to OEM documentation.