CESSNA SECTION 3
MODEL 172S NAV III EMERGENCY PROCEDURES
GFC 700 AFCS
U.S.
ENGINE FAILURES (Continued)
ENGINE FAILURE DURING FLIGHT (Restart Procedures)
1. Airspeed - 68 KIAS (best glide speed)
2. FUEL SHUTOFF Valve - ON (push full in)
3. FUEL SELECTOR Valve - BOTH
4. FUEL PUMP Switch - ON
5. Mixture Control - RICH (if restart has not occurred)
6. MAGNETOS Switch - BOTH (or START if propeller is stopped)
If the propeller is windmilling, engine will restart
automatically within a few seconds. If propeller has stopped
(possible at low speeds), turn MAGNETOS switch to
START, advance throttle slowly from idle and lean the
mixture from full rich as required to obtain smooth
operation.
7. FUEL PUMP Switch - OFF
If the indicated fuel flow (FFLOW GPH) immediately drops
to zero, a sign of failure of the engine-driven fuel pump,
return the FUEL PUMP switch to the ON position.
172SPHBUS-00
3-7
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