Propeller Owner’s Manual
147
MAINTENANCE PRACTICES
61-00-47
Page 6-31
Rev. 16 May/20
(b) Operating the aircraft with an inaccurate tachometer
could cause continued operation at unacceptably
high stresses, including repeatedly exceeding the
maximum engine RPM.
(c) Continuous operation in a restricted RPM range
subjects the propeller to stresses that are higher
than the design limits.
(d) Stresses that are higher than the design limits will
shorten the life of the propeller and could cause a
catastrophic failure.
B. Tachometer Calibration
(1) Hartzell Propeller Inc. recommends that propeller
owners/operators calibrate the engine tachometer in
accordance with the National Institute of Standards
and Technology (NIST) or similar national standard
(traceable).
(2) Contact Hartzell Propeller Inc. if the propeller was
operated in a restricted RPM range because of a
tachometer error.
Содержание HC-E4 3 Series
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