Hartzell HC-C2YR-4CF/FC8475-6, Руководство пользователя и журнал учета

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MAINTENANCE PRACTICES
61-00-15
Page 6-19
Rev. 24 Dec/20
Propeller Owner's Manual
115N
(3) The following instructions may be used to determine the
correct pressure.
(a) To use these instructions, the propeller model number
must be known, and it must be determined if the
propeller blades are counterweighted.
(b) The propeller model number is recorded in the log
book, and is also stamped on the propeller hub. The
propeller model number indicates the presence of a
spring kit by an "S," "U," or "T" after the dash number.
For example: HC-C3YR-2LUF indicates a "U" spring
kit.
(c) To determine if the blades are counterweighted,
remove the spinner dome and examine the base of
the blade. Compare the blades to those shown in the
Figure 6-6.
B. Basic pressures:
NOTE: Propellers on certain aircraft and engine combinations
have experienced instances of inadvertant feathering.
These events occurred either at the time of shut
down or at low engine RPM. Hartzell Propeller Inc.
has determined that this tendency to feather may be
reduced or eliminated by lowering the air charge within
the propeller cylinder. Those propellers authorized for
operation with a reduced air charge are listed in this
section.
(1) All four-blade compact propellers - Table 6-5
Except: HC-C4YR-2(L)/F(J)C7663DB-6Q - Table 6-6
(2) All propellers with no counterweights and no spring -
Table 6-1
(3) All propellers with no counterweights and an “S” spring -
Table 6-2
Except:
HC-E2Y(K,R)-2RBS( ) - Table 6-3