Originally Posted by
TedToToe
And there was me thinking it was a manual thing, generated from the landing checklist. How about the multiple bongs before entering the runway for takeoff?
Originally Posted by
IFlyPlanes
I had no idea that this was a thing on some of BA's A20Ns, I haven't flown on many (only TTND/I alongside some A21N) and those are the older ones with the bong after the gear goes down.
This bong typically means that the exit lights are armed, so I do wonder if the exit lights are armed when the flaps go down on these particular aircraft?
Apologies if veering slightly off topic, was just curious about this.
Originally Posted by
KARFA
I am pretty sure they do as well. Effectively it's the same actions as normal, it's just that the trigger seems to have been changed on this small batch of 6 or so 320neos. no idea whether this was an airbus implemented thing or BA asked for it. The obvious problem is cc are usually not aware, and all of a sudden they hear a bong when securing thinking the gear has come down when in reality we are still at 4000ft.
The line up bong is indeed manual upon line up clearance. It’s one switch movement, so you should get two chimes. Four is likely someone forgot if they did it or didn’t hear it and moved it twice to be sure. Far better than forgetting or zero. One is sometimes got if you move it too quickly for the plane when it’s early and tired.
The after take off bong is indeed when gear goes up and associated when the emergency lights go out. (Chime is due to the change of light situation). As mentioned this is usually when the gear drops on approach and after the gear goes up on climb out.
It says it can be done by flaps subject to spec, but then if so, it should also stay on until flaps are up on the climb out to as it’s just to do with config on an either/or. I have tried to find if any at BA are unique and they aren’t appearing so - or at least I can’t with a quick search. All should do it with the gear… so I will try and do some investigating because you’ve got me curious now.
EDIT: I think it’s two separate things. There is an auto position on the seat belts sign (on some aircraft) that if we select flaps with them off, they go to ON and have a chime. So if flaps are selected before the 10 mins to landing - or indeed we have forgotten to turn the belts on. They will go on with a chime at flaps selection.
Did you happen to notice if the flaps caused the seat belts to come on when you had that chime at flaps selection?