Propeller Owner’s Manual
115N
INSPECTION AND CHECK
61-00-15
Page 5-11
Rev. 24 Dec/20
Example:
Minimum propeller idle RPM listed in the AMM is 1180 RPM
Propeller idle is set at 1120 RPM
Propeller has operated with a RPM deviation of
60 RPM
Engine was rigged 2 months ago and has operated
75 hours
since it was rigged
Figure 5-1 shows that with an RPM deviation of 60 RPM for
75 hours - the propeller assembly must be overhauled and
engine rigging corrected before further flight.
Example of a Ground Idle RPM Check Evaluation
Figure 5-2
Corrective Action Required
Figure 5-1
Number of RPM below Minimum Propeller Idle RPM
Before further flight - retire the blades
and hub from service and overhaul the
remaining components. Correct engine
rigging during propeller reinstallation.
No Immediate Action Required - adjust engine rigging to
prevent operation below the specified minimum RPM.
Before Further Flight - adjust engine rigging to prevent
operation below the specified minimum RPM.
Before further flight - overhaul
the propeller assembly and correct engine
rigging during propeller reinstallation.
Total hours of operation the propeller has operated on an
engine with improper RPM setting.
100
75
50
25
0
0
20
40
60
80
