AFMS N°D03 FOR ALTERNATIVE AVIONICS CONFIGURATION
Section 4 – Normal procedures
CHECKLISTS
5.3 BEFORE TAXIING
1. Flight instruments and avionics: set, TEST functions
2. Altimeter: set
3. Pitot Heat: ON, test for ammeter indication, then OFF
4. Taxi light: ON
5. Parking brake: OFF
When taxiing at close range to other aircraft, or during night flight in clouds,
fog or haze, the strobe lights should be switched OFF. The NAV lights must
always be switched ON during night procedures.
5.4 TAXIING
1. Parking brake: Release
2. Brakes: check
3. Flight instruments: check altimeter.
Avoid prolonged idling during taxi.
Alternator lights may appear when reducing engine RPM below 950 RPM (yellow arc).
The light will stay ON until RPM is increased above.
During taxi, it is recommended to maintain propeller speed at 1000RPM or above in
order to preserve a full loaded battery, minimise annunciator nuisance and assure
maximum battery performance during flight. Furthermore this is particularly true dur-
ing cold weather to prevent lead fouling of spark plugs.
Following extended operation on the ground, or at high ambient temperatures, the
following indications of fuel vapor lock may appear:
- Arbitrary changes in idle RPM and fuel flow;
- Slow reaction of the engine to operation of throttle;
- Engine will not run with throttle in IDLE position.
Solution:
1. For about 1 to 2 minutes, or until the engine settles, run at a speed of 1800 to
2000 RPM. Oil and cylinder head temperatures must stay within limits.
2. Pull throttle back to IDLE to confirm smooth running.
3. Set throttle to 1200 RPM and mixture for taxiing, i.e., use mixture control lever to
set the maximum RPM attainable.
4. Immediately before the take-off run set the mixture for take-off, apply full throttle
and hold this position for 10 seconds.
Vapor lock can be avoided if the engine is run at speeds of 1800 RPM or more.
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