4-20 ENSTROM 280FX OPERATOR’S MANUAL
FAA Approved: Jul 27/15 Rev. 10
Report No. 28-AC-020 Apr 15/15
4. After attaining translational lift, adjust throttle as
necessary to maintain RPM at 3050 RPM. Continue level
acceleration to 35 MPH, then apply aft cyclic to allow the
helicopter to climb and accelerate to best rate of climb
speed. Maintain constant airspeed. Climb at best climb
speed to clear barrier.
4-15. [Reserved]
4-16. Cruise
1. Maintain 3050 RPM and 29 inches manifold pressure, or
less, in level flight.
2. Set cyclic trim.
3. Lean fuel mixture to approximately 90 lb/hr at 29 inches
manifold pressure.
4. Monitor TIT.
NOTE
Allow a few minutes for temperature to stabilize.
DO NOT exceed 1650°F TIT. Make fine
adjustments to attain desired fuel flow and cross
check cylinder head temperature and oil
temperature. If temperatures are too high, enrich
mixture until temperatures remain within limits.
5. Any increase in power setting above 29 inches should be
accompanied by setting the mixture to full rich.
CAUTION
Avoid maneuvers that require full pedal travel or
rapid pedal reversals.
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level of the 280FX Rotorcraft Flight Manual.
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