Hi all from sunny (sporadic) Banbury in UK. I have an on going question which the internet (and I've printed it all off, it's just not there) refuses to answer. As an aircraft ground engineer, it feels like a design/engineering thing. Why are there white blocks at the flap positions on the indicators? I feel like it's either for ease of pos identification or to allow for onload/offload flap positions?
Please put me out of my misery, I'm 64 and should be resting really
757-300 flap indicator