Induction System Icing; Emergency Speed Reduction - Beechcraft Bonanza V35B Pilot Operating Handbook

controls and execute a smooth pullout. Ailerons should be neutral and throttle in idle position at all times
during recovery.

INDUCTION SYSTEM ICING

The possibility of fuel icing is reduced by the design of the pressure carburetor. Under certain conditions,
however, impact ice can form at several points in the induction system. As with fuel ice, the first
indication of impact ice formation probably will be a slight drop in manifold pressure. During possible
icing conditions, any such drop should be investigated immediately.
To check for carburetor ice in possible icing conditions:
a. Note manifold pressure, then, apply full carburetor heat. Manifold pressure will drop
slightly. Do not correct for this drop.
b. After one or two minutes, switch back to cold air. If manifold pressure rises higher
than the point observed before applying carburetor heat, carburetor icing is indicated.
c. Apply carburetor heat immediately until icing conditions no longer exist. Use high
power settings and lean mixtures to produce maximum heat under possible icing
conditions.

EMERGENCY SPEED REDUCTION

In an emergency, the landing gear may be used to create additional drag. Should disorientation occur
under instrument conditions, the lowering of the landing gear will reduce the tendency for excessive
speed build-up. This procedure would also be appropriate for a non-instrument rated pilot who
unavoidably encounters instrument conditions or in other emergencies such as severe turbulence.
Should the landing gear be used at speeds higher than the maximum extension speed, a special
inspection of the gear doors in accordance with maintenance manual procedures is required, with repair
as necessary.
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Beechcraft V35B Bonanza
Pilot Operating Handbook