Overspeed Warning!!!
---This is the over-speed statement in the Whirlwind manual that came with my propeller. I am sure they are using the standards set fourth by Hartzell so as to avoid any legal issues. Regards all, Allan
.
5.3 Overspeed Warning
It is possible to overspeed the propeller by rapid throttle
advancement. Therefore, always adjust the power and RPM
lever slowly and smoothly to avoid the possibility of
overspeed.
If an overspeed occurs:
Overspeed
Occurrence
Required Action
up to 110 % of the
max RPM
A 50 hours inspection must be
performed immediately by a certified
A&P mechanic
111% to 120% of the
max RPM
A mandatory teardown inspection at
the factory is required
above 121% of the
max RPM
No further use of the propeller is
permitted! The propeller must be
returned to the factory for inspection.
WARNING: Failure to adhere to these
guidelines may lead to a catastrophic
propeller structural failure. Any type of
structural failure may result in death or
severe bodily injury.