Searey LSA – Pilot’s Operating Handbook Version 5.0, Revision 8
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3.3.12 INADVERTENT ICING ENCOUNTER
Alter course to obtain an outside air temperature that is less
conducive to icing.
Change altitude to obtain an outside air temperature that is
less conducive to icing.
OPEN to increase engine speed and minimize ice buildup on
propeller blades
If airframe ice formation is rapid or buildup is significant, plan a
landing at the nearest airport.
Be prepared for a higher stall speed.
With ice buildup, make faster landing approach 69-75 MPH
3.3.13 LOSS OF PRIMARY INSTRUMENTS
The primary flight parameters and the instruments that present them are:
Attitude (EFIS: artificial horizon)
Airspeed (EFIS: airspeed. Mech. ASI: airspeed, GPS: ground speed)
Altitude (EFIS: altitude)
Vertical speed (EFIS: vertical speed)
Turn & bank (EFIS: turn & bank)
Magnetic heading (EFIS: mag. heading, GPS: mag. heading)
The following should be kept in mind:
1. The Searey LSA is a VFR aircraft and flight by reference to the visible
horizon is still primary. In case of any failure the first priority is to FLY
THE PLANE and AVOID OBSTICLES. Do not be distracted from
maintaining attitude, altitude and airspeed while trying to solve a
cockpit problem.
2. In the case of an EFIS failure there is still the mechanical airspeed
indicator and the GPS. The GPS has a horizontal situation indicator
(HIS) page that indicates primary flight information and ground speed.
These are excellent backups for the EFIS. It must be noted that the
GPS altitude is not the same as barometric altitude and there can be
several hundred feet difference in reading.
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