[ilkandi]

It seems to be an easy fix to reduce an unnecessary environmental impact, save animal lives, save money on carcass cleanup crews and wire damage, and increase public goodwill. Is there a FAA reason for having steady lights, is it bureacratic inertia, or are the rules accommodating the owners of older towers, or the manufacturers of steady lights? I think if I were a pilot a flashing light would catch my attention faster than a steady one (cf, blinking vehicle turn signals).

[Nick_C]

According to this from the FAA, they commonly approve flashing lights:

http://transition.fcc.gov/mb/policy/dtv/lighting.html

And this advisory (PDF, admittedly from the Alaskan office, but I doubt there is much variance), provides for flashing lights on towers:

http://www.faa.gov/about/office_org/headquarters_offices/ato...