Freefly Alta 8 Pro, Manual

Page: 116 / 128

Propellers
Propeller blades should be removed when making a change to the configuration of ALTA Pro
to prevent propeller strikes in the event of unintentional motor starts and should be replaced
if they become damaged. Generally, a nick on the leading edge that is large enough to catch
a fingernail indicates that the propeller should be replaced. If the blade composite structure
becomes delaminated, the propeller should be replaced.
Freefly makes folding propeller assemblies available that include the blades and propeller
hub fully assembled and factory balanced. They are available in clockwise and
counterclockwise orientations.
Only use propellers supplied by Freefly on ALTA Pro. Use of third-party
propellers can cause motor instability, overheating, and failure.
The folding propellers are installed on the motors with four M3×8 socket head bolts.