Yak 18T Flight Operations Manual
Page 80 of 82
Disclaimer: This manual is to be used as a reference only, it is based on translated Yak 18T Flight Operations
Manuals and has not been approved by the Yakovlev Design Bureau or any other authority.
4. Prior to taxiing beginning, cut-in a low light (taxiing filament) of the land/taxi lamp,
where a lamp-light is used as the light source
NOTE
1. If required, light from a landing filament (high light) can be employed, but no longer than
5m
2. If day light visibility is not sufficient or limited, usage of taxiing lamps, in the day time is
permissible
5. Prior to take-off on the ground, switch the general illumination dome light in the cockpit
off, if it was not done before taxiing. Check intensity adjustment of the instrument panel
6. Before take-off beginning, change from a low light to a high one (switch the light's
landing filament on)
7. On gaining 100-150 altitude, switch the light off
8. Adjust intensity of the instrument panel illumination, taking the eye's light adaptation to
the outer light background into account (illuminated city, lead-in light)
9. Use a floodlight lighting fixture when keeping records or employing the chart
10. While lowering the flight level, adjust the cockpit illumination proceeding from the landing
conditions (illuminated or non illuminated airfield) -
• adjust intensity of the instruments illumination
• switch the dome light off
11. After turn to final at 100-150 m altitude switch the high light of the land/taxi lamp on
NOTE
Sometimes, when approaching (if it is raining, falling snow or dust and so on) the so-called
light screen can appear when the lamps are switched on, this makes it difficult to pilot the
aircraft. In this case, it is advisable to switch light of the lamps on and off recurrently and
make landing at the most favourable conditions of the landing illumination for this type of
weather or go to a diversion airfield.
12. At the end of the landing run, switch the high light off and cut-in the low one (the taxiing
filament of the lamp)
13. After taxiing-in for landing switch-off the land/taxi lamp, navigation lights, flashing
beacon MCA-3
14. When all post-flight operations are completed, switch off the illumination of the
instrument panel and general illumination of the common cockpit
15. Cut-out the internal battery or ground supply
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