Cold Weather Maintenance Hints; Ground Emergency Procedures; Engine Fires - Thrush Aircraft S2R–T660 Maintenance Manual

THRUSH AIRCRAFT INC - T660 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL

COLD WEATHER MAINTENANCE HINTS

The information that follows is intended only for the purpose of supplementing the existing
information in this manual when operating the aircraft in cold weather. Keeping the aircraft in top
maintenance condition during cold weather cannot be over stressed.
The battery should be maintained at full charge during cold weather to prevent freezing. After adding
water to the battery in freezing temperatures, charge the battery to mix the water and electrolyte. A
frozen battery may explode when subjected to a high charge rate. Corrosive damage to the area
adjacent to an exploded battery will result if the electrolyte solution is not removed immediately.
Instructions for removing spilled electrolyte are provided in this Section. The battery should be
removed and stored in a warm place if the aircraft is to remain idle for an extended period of time.
In the fuel system, condensation is more likely to occur in cold weather due to a more rapid and
positive division of moisture content from other fuel properties. If at all possible, use fueling facilities
that filter moisture from the fuel. If fueling facilities with filters are not available, filter the fuel through a
good quality chamois. Fill the tanks with correct grade of fuel as soon as possible after landing to
reduce the possibility of condensation and ice formation in the tanks. Fuel extracted from fuel header
tank drain before starting deserves a closer examination when the aircraft is being operated in cold
weather.
Cold weather operation demands procedures that are in addition to normal Post Flight Maintenance
Procedures. Fill the fuel tanks immediately after flight. If shelter is not available, tie the aircraft down
and install covers on all vents, openings, and so forth as required.

GROUND EMERGENCY PROCEDURES

Emergency procedures must be accomplished as rapidly as possible, should an emergency arise. It
is suggested that steps pertaining to each emergency be committed to memory in order to
accelerate the procedure and minimize any possible damage.

ENGINE FIRES

The following Dry Motoring Run procedure is used to clear an engine at any time when deemed
necessary to remove internally trapped fuel and vapor or when there is evidence of a fire within the
engine. Air that passes through the engine serves to purge fuel, vapor, or fire from the combustion
sections, the gas generator turbine, the power turbine, and the exhaust system.
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Effective: 12/17/03