In Case You Missed It
Ask the DAR
Is an aircraft’s empty weight required on the data plate? Does the gross weight change when an LSA is converted from conventional landing gear to floats? Should engine maintenance be entered in the builder’s logbook? Does the Minimax still qualify as an ultralight?
Aero ‘lectrics
If you've ever wondered who invented the ubiquitous light-emitting diode, wonder no more. Columnist Jim Weir explains the origin and evolution of LEDs, and how to wire them up for use in your aircraft.
Troubleshooting 102: EFIS
Calibration and hardware installation errors are common sources of trouble, so follow the install manuals to the letter.