Originally Posted by Captbob52 (Post 19939291)

As some of you said, the blue light means your plugged in to seat power, and it's WORKING, and the green light on 777, 747 let's me know that your Flat Bed seat is in the proper mode (full upright) for take off or landing.

Originally Posted by StayingHomeIsBetter (Post 19938838)

It's a cell phone detector. Lights up when phone is powered ON.

Originally Posted by javabytes (Post 19939690)

So THAT'S how the flight attendants do it... No wonder they didn't tell OP, would have given away their secret ;)

Originally Posted by MSPeconomist (Post 19937102)

This is what I've been told. I would expect that the other aircraft that have been reconfigured with flat beds might have similar lights, for example the 767-400s, 747s, and redone 767-300s, but I haven't observed the lights on those aircraft.

If the OP really means (domestic) FC seats, I think I've seen some amber lights in the middle of the outside of the metal plate below the aisle armrest. These light up with the escape path lighting, so they're some sort of emergency lights. There are also lights that indicate that someone in the row has used the FA call button, but that little light is usually overhead, on the aisle side of the controls for lights, in aircraft that don't have the light and call button functions in the armrest.

Originally Posted by Deadtail (Post 19936972)

ET had a light in his belly. I don't know if Richard Dreyfuss ever got over it.

Originally Posted by c_d (Post 19941368)

The redone 764 definitely has the lights. However my neighbours light was on and green today although she was in lie flat.