CHAPTER 1. SCOPE AND CLASSIFICATION.
1.1 Scope.
This specification sets forth the Federal Aviation Administration (FAA) requirements for obstruction lighting equipment used to increase conspicuity of structures to permit early obstruction recognition by pilots.
1.2 Equipment Classification.
Type Description
L-810 Steady-burning red obstruction light
L-856 High intensity flashing white obstruction light, 40 Flashes Per Minute (FPM)
L-857 High intensity flashing white obstruction light, 60 FPM
L-864 Flashing red obstruction light, 20-40 FPM
L-865 Medium intensity flashing white obstruction light, 40 FPM
L-866 Medium intensity flashing white obstruction light, 60 FPM
L-885 Flashing red obstruction light, 60 FPM
