90% of the wear on a bulb is the inrush current when you turn it on. A
landing light flasher without an inrush current limiter is an excellent way
to burn out bulbs faster. None of the commercially available flashers I am
aware of use ICLs.

Jim



My preference would be to get a flasher for the landing lights so I can
have the best of both worlds--longer bulb life and enhanced visibility
to others.