Brake Maintenance - Cirrus SR20 Pilot Operating Handbook

Cirrus Design
SR20
• Use only as much power (throttle) as is necessary to achieve
forward movement. Keep in mind, any additional power added
with the throttle will be absorbed in the brakes to maintain
constant speed.
• Use rudder deflection and the minimum necessary inputs of
differential braking to achieve directional control.
• Do not "ride the brakes". Pilots should consciously remove
pressure from the brakes while taxiing. Failure to do so results in
excessive heat buildup, premature brake wear, and increased
possibility of brake failure or fire.
• Avoid unnecessary high-speed taxiing. High-speed taxiing may
result in excessive demands on the brakes, increased brake
wear, and the possibility of brake failure or fire.
• Brakes have a large energy absorbing capacity; therefore,
cooling time should be considered. Energy absorbed during a
few seconds of deceleration can take up to an hour to dissipate
(Serials 2016 thru 2240 before SB2X-32-21), or several minutes
to dissipate (Serials 2016 thru 2240 after SB2X-32-21, 2241 &
subs). Always allow adequate cooling time after brake use.
• Allow a cooling period following a high-energy braking event.
High-energy braking can include an aborted takeoff or the
equivalent energy required for a Maximum Gross Weight full-
stop from 70 knots in less than 1000 feet.

Brake Maintenance

The brake assemblies and linings should be checked at every oil
change (50 hours) for general condition, evidence of overheating, and
deterioration. Serials 2016 thru 2030 before SB2X-05-01: At every
annual/100-hour inspection the brakes should be disassembled, the
brake linings should be checked and the O-rings must be replaced.
The aircraft should not be operated with overheated, damaged, or
leaking brakes. Conditions include, but are not limited to:
• Leaking brake fluid at the caliper. This can be observed by
checking for evidence of fluid on the ground or deposited on the
underside of the wheel fairing. Wipe the underside of the fairing
with a clean, white cloth and inspect for red colored fluid
residue.
P/N 21399-004 P/N 21399-004
Revision A1
Section 10
Safety Information
10-11 10-11