Thrush Aircraft S2R-T660, Maintenance Manual

Page: 15 / 300

THRUSH AIRCRAFT INC – T660 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL
tank transmits an electrical signal to the single fuel quantity indicator. The instrument reads both the
left and right fuel tanks singularly as chosen by the electrical control switch, adjacent to the fuel
quantity indicator gauge on the instrument panel. The two fuel tanks are serviced through filler ports
located on the top of both wings. The filler ports incorporate security chains to prevent the lost of the
fuel caps. Service the aircraft from refueling facilities that utilize proper ground handling equipment
and filter systems to remove impurities and water accumulations from the bulk fuel. If filtering
facilities are not available, filter the fuel through a quality high-grade chamois. Fuel tanks should be
serviced after the last flight of each day to reduce condensation and allow any entrapped water
accumulations to settle to the fuel system drains, to be removed, prior to the next flight.
Prior to the first flight of the day the header tank and fuel filter should be drained to check for the
presence of water or sediment in the fuel system. If there is a possibility, at any time, that any
tank may contain water, the header tank and fuel filter should be drained as necessary to ensure no
water exists in the fuel system. For fuel system servicing information, refer to Section Two.
LANDING GEAR, WHEELS & BRAKES
The main landing gear is made using a formed chrome-moly spring steel unit. The left Main gear
and the right main gear are symmetrical. The main wheels are 11 x 10. The spring steel
construction and design of the main gear allow for absorption of landing weight and common
stresses associated with such, thus eliminating the need for shock struts. The brake system has
individual toe brakes and individual park brakes. The use of a special N-513 compound cup in each
master cylinder permits the use of MIL-H-5606, a heavy-duty aviation hydraulic fluid. The brakes
are dual caliper disc types. The tail gear is a spring steel type and uses a 600 x 6 tailwheel.
FLIGHT CONTROLS
The flight controls are of conventional design employing extensive use of ball bearings for low
friction and smoothness of operation. The aileron and elevator controls are push rod systems and
the rudder control is through cables. The elevator trim control is actuated by a lever that moves the
tab to the desired position through push rods. The wing flaps are operated electrically and
controlled by a switch located on the left side of the cockpit. The rudder controls are interconnected
by springs to the aileron system so that a wing may be lifted with the rudder alone.
INSTRUMENTS
The standard instruments are located on three separate panels: An upper panel, a left panel, and a
Effective: 12/17/03
1 - 8