Originally Posted by
KARFA
right, some actual observations today on TTNP.
wasn’t quite paying full attention on take off, but I am pretty sure the single bong happened when the flaps were retracted and not earlier when the gear was retracted.
on coming in to LHR, seat belt signs were already on as we already had the 10 minute call. The single bong happened when the first stage of flaps came out. This must have been around 5-6,000 ft. I had a look and the exit lights at the emergency exit rows was also illuminated. No bong when the gear came down at the usual point near twickers.
Photo taken straight after single bong on the way in
This is fascinating. I’ve delved into the rather large Airbus manuals and Airbus seem to have it on their “not important enough to tell the pilots (or crew)” list - among many other things. It merely says for all of them it can come on and off with Flaps 1 selected or gear down. Makes no specific reference to which is which. Also seems odd that only a handful are different which perhaps indicates it’s a mistake.
Our matrix with all the variants and differences - there’s a lot of them across the fleet unsurprisingly - says TTNA to TTNR are identical fits and that function isn’t even listed as even one of the things that could be different.