Pilot’s Operating Handbook
4-27
DO NOT USE FOR FLIGHT OPERATIONS
Section 4
NORMAL PROCEDURES
100 SERIES
Procedures
TAXIING
The power lever may be placed into BETA range during taxi, to improve
brake life and increase stopping performance during landing. BETA range is
selected by lifting up on the BETA lever and moving the power lever aft —
over a gate. With the power lever moved into this BETA range position, the
propeller is at a ne pitch and produces nearly zero thrust in a static 52%
idle condition. A leaf spring is installed in the control quadrant which the
power lever contacts and provides the pilot with an indication of reaching
the REVERSE range. Moving the power lever further aft from this position
in REVERSE range will result in a negative blade angle and an increase in
engine power to produce reverse thrust from the blades.
Propeller RPM Limitation
Stabilized ground operation is prohibited between 450 and 1050 RPM. The
propeller may be operated when feathered at or below 450 RPM. BETA may
be used to increase
without causing excessive taxi speeds.
CAUTION: The use of reverse thrust should be limited to use on
prepared surfaces to protect the propeller from damage caused by small
rocks or pebbles being lifted into the propeller blades.
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