Propeller Owner’s Manual
147
INSPECTION AND CHECK
61-00-47
Page 5-9
Rev. 17 Sep/20
(2) Periodic Ground Idle RPM Check
NOTE: The accuracy of the tachometer is critical to
the safe operation of the aircraft. Refer to
the section, “Tachometer Calibration” in the
Maintenance Practices chapter of this manual
for important information.
(a) Perform the RPM check in accordance with the
Airplane Flight Manual or Airplane Flight Manual
Supplement.
1 Refer to the Airplane Flight Manual or Airplane
Flight Manual Supplement to determine if there
are any propeller RPM restrictions or limitations.
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
