B737 classic DOWN 3 GREENS
You are on final, select gear down, and get two green lights only.
No red lights.
Do you accept it for a valid down and locked indication?
I've kept various manuals from old companies, and noticed, for example, on page 14.10.1, December 1, 2000:
Red light:
Extinguished - landing gear is up and locked with landing gear lever up or off.
while in a newer manual, same page, December 5, 2003, a new line is added:
Extinguished
....
- landing gear is down and locked with landing gear lever DN.
In fact, it would be possible to design a landing gear indicating system with red lights only.
No green lights.
Red lights extinguished would always mean no disagreement.
It seems the new line they've added means just that.
So what do you do? go around and go to the back to check in the middle of passengers?
Or do a light test and accept the red light extinguished as a down and locked indication, as the manual states?