USER MANUAL
UM-07 EN
Page 11
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Date of issue 09.07.2018 Rev. 1
16.3.
Medium Repair
Medium Repair is performed when half of the established operational hours or calendar interval of
Overhaul (TBO) is met – whichever occurs first.
Medium Repair may only be performed by the manufacturer or an Authorized service centre.
Without medium repair, the propeller is forbidden to operate.
16.4.
Overhaul
The time between owerhauls (TBO) is established by Service Bulletin No UL 02/2012 in the current
wording (see www.woodcomp.cz).
Overhaul may only be performed by manufacturer or an Authorized service centre.
Without the required scheduled repairs, the propeller is unairworthy and can not be operated!
16.5.
Annual Inspection
The Annual inspection of the propeller is performed within an annual aircraft inspection regardless of the
number of operating hours.
Annual inspection range:
Remove spinner (pos. 5), remove safe locking wire from the screws pos. 9 and check the tightening of
the nuts pos. 12 with a torque of 22Nm. If the spacer is used, check the tightening nuts (pos. 12) and
the screws (pos. 9) of the propeller fixing screws to the spacer. To tighten, use a torque wrench with
a valid calibration time.
After tightening, secure the screws (pos. 9) of in pairs with stainless steel wire Ø 0.5mm.
Check that all blades are secure.
Check the tightening of four M6 Allen screws on each blade with a torque of 10Nm. The blades must
not show clearance, marks of rotation in roots, etc.
Visual inspection of the surface of the blades: The blades must not be damaged due to the impact of
hard particles (stone, bolt, etc.), they must not show any damage that may result in cracks, etc.
Possible damages detected may not be larger than allowed in Chapter 18.
If the self-adhesive tape is damaged, replace it with a new one (see 18.4).
Place the spinner (pos. 5) on the propeller in the position indicated by red dots on the perimeter - in
no case may the cone be mounted in a different position. Tighten the cone with the nine M4 bolts
(pos.14) with plastic washers (pos. 15). Secure the screws with Loctite 243.
The annual inspection may be performed by an authorized service organization of the aircraft with which the
Propeller is certified.
17.
Special Inspections
Special inspections must be performed:
When major damage to blade by impact of foreign object (stone, bird, hail, etc.) is detected
In case of careless or prohibited handling;
In case of overspeed the propeller by more than 200 rpm;
In case of lighting strike;
In all cases of operating the propeller outside the conditions/ranges stated in this manual.
Special inspections may also be required, for example, when installing propellers on engines other than
ROTAX 912.
WARNING!
Damaged propeller is more dangerous than damaged engine!
