1-4 DESCRIPTIVE DATA
ENGINE
Number of Engines: 1
Engine Manufacturer: Pratt & Whitney Canada
Engine Model Number: PT6A-34
Engine Type: The PT6A series engine is a free power, two-shaft turbine
engine. The engine uses a three-stage axial and one-stage centrifugal
compressor section, an annular reverse-ow combustion chamber, single
stage compressor turbine, single stage power turbine. The exhaust gas
is directed through an annular exhaust plenum to the atmosphere via twin
opposed exhaust ports provided in the exhaust duct.
Horsepower Rating:
Type of Engine Power
Shaft
Horsepower
(SHP)
Takeoff 750
Maximum Continuous Emergency 750
Maximum Normal Operating 700
Maximum Climb 700
Maximum Cruise 700
Table 1-1 – Horsepower Rating
PROPELLER
Number of Propellers: 1
Propeller Manufacturer: Hartzell Propeller Inc.
Propeller Model Number: HC-E4N-3P (HC-E4N-3PY) / D9511FSB
Number of Propeller Blades: 4
Propeller Diameter: 95 - 96 inches
Propeller Type: Constant speed, full feathering, reversible, hydraulically
actuated aluminum-bladed propeller, with a feathered blade angle of 86°, a
low pitch blade angle of 17.5°, and a maximum reverse pitch of -10° (at the
30-inch radius).
NOTE: Horsepower ratings are for 2200 RPM (propeller).