Cirrus Design Section 3
SR22 Emergency Procedures
P/N 13772-004 3-19P/N 13772-004 3-19
during descent and approach to landing the cooling air may not be
sufficient to prevent an engine fire.
Selecting BOOST on may clear the problem if vapor in the injection
lines is the problem or if the engine-driven fuel pump has partially
failed. The electric fuel pump will not provide sufficient fuel pressure to
supply the engine if the engine-driven fuel pump completely fails.
Selecting the opposite fuel tank may resolve the problem if fuel
starvation or contamination in one tank was the problem.
Cycling the ignition switch momentarily from BOTH to L and then to R
may help identify the problem. An obvious power loss in single ignition
operation indicates magneto or spark plug trouble. Lean the mixture to
the recommended cruise setting. If engine does not smooth out in
several minutes, try a richer mixture setting. Return ignition switch to
the BOTH position unless extreme roughness dictates the use of a
single magneto.
If a partial engine failure permits level flight, land at a suitable airfield
as soon as conditions permit. If conditions do not permit safe level
flight, use partial power as necessary to set up a forced landing
pattern over a suitable landing field. Always be prepared for a
complete engine failure and consider CAPS deployment if a suitable
landing site is not available. Refer to Section 10, Cirrus Airframe
Parachute System (CAPS) for CAPS deployment scenarios and
landing considerations.
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