Normal Procedures
Pilot's Flight Manual
4-22 Reissued: 16 Jan 2019
4-11. PRACTICE AUTOROTATION (cont)
Ensure fuel boost pump (Helicopters with Fuel Injected Engine -
HIO-360-G1A) is activated prior to commencing autorotation
training. Split the needles by reducing throttle slightly and lowering
the collective. The throttle correlation will establish a high idle rpm
(approximately 2000 rpm) which will aid in preventing the engine
from loading up or stalling during recovery. Conversely, for
recovery increase throttle slightly when the collective is raised, the
correlation is such that only minor throttle adjustments will be
required to perform a smooth recovery without exceeding 2700 rpm.
If engine stops make a touchdown auto landing.
4-12. USE OF CARBURETOR HEAT (HELICOPTERS WITH
CARBURETED ENGINE - HO-360-C1A ONLY)
WARN ING
CAT GAGE IS ONLY EF FEC TIVE ABOVE 18
INCHES MP. DUR ING DE SCENTS OR AUTO -
RO TA TION UN DER CON DI TIONS CON DU CIVE
TO CARB ICE, IG NORE GAGE AND AP PLY
FULL CARB HEAT.
1. When conditions conducive to carburetor ice are known or
suspected, such as fog, rain, high humidity, or when operating
near water, use carb heat as follows:
a. During hover or cruise flight above 18 inches MP,
apply Carb Heat as required to keep the CAT gage
out of the Yellow Arc. If an unexplainable drop in
manifold pressure or RPM occurs, apply full Carb
Heat for about one minute and check for an
increase in MP or RPM.
b. During autorotation or reduced power below 18
inches MP apply full Carb Heat regardless of CAT
gage temperature. When power is reapplied, return
Carb Heat control to full cold or partial heat
position.
c. Additional information is given in Section 3 of the
Lycoming Operator’s Manual.
SCHWEIZER
Model 269C-1 Helicopter
FAA Approved
CSP book 2..indd 100 8/4/19 12:53 PM
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