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How to Replace the Map Light on Your Cessna 172

The Cessna 172 Skyhawk is the best-selling general aviation aircraft in history. The iconic single-engine, high-wing plane has flown more miles than other private aircraft in the world. In addition, more pilots of today took their first turn at the controls in a 172 than in any other plane. In production for 55 years, the 172 seats a pilot and three passengers. Its 160-horsepower four-cylinder Lycoming engine produces a cruise speed of 140 miles per hour with a maximum range of 800 miles. The Cessna 172 map light contains a standard white bulb for map reading and a non-glare red bulb for instrument illumination.

Things You'll Need

Phillips screwdriver
Nut driver

Instructions

Map Light Bulb Replacement
- 1
  Switch the three-position map light switch located on the left doorpost to the center "Off" position.
- 2
  Slide the hood and lens off the map light assembly located at the top of the left doorpost.
- 3
  Pull the bayonet-style light bulb out of the clip. Push a new bulb into the clip.
- 4
  Replace the hood and lens on the map light assembly.
Map Light Assembly Removal
- 5
  Turn the three-position map light switch located on the left doorpost to the center "Off" position.
- 6
  Remove the screws securing the left front doorpost shield. Remove the nut and washer securing the map light assembly from the rear of the doorpost shield.
- 7
  Detach the ground wire from the map light assembly screw.
- 8
  Unplug the wires from the quick-disconnect fasteners.
- 9
  Remove the map light assembly from the front doorpost shield.

Aviation