EMBQA From United States of America, joined Oct 2003, 9348 posts, RR: 12 Reply 2, posted (8 years 4 months 2 weeks 5 days 10 hours ago) and read 2060 times:
That is actually not the number 2 but the location for attaching a lifting hook. The symble looks like a question mark with an underscored bottom. They are hard to see on the ExpressJet Embraer, but if you look on the nacelle you can see them in yellow.
EMBQA From United States of America, joined Oct 2003, 9348 posts, RR: 12 Reply 5, posted (8 years 4 months 2 weeks 5 days 4 hours ago) and read 1978 times:
Why on the Upper TF Flap of an A320.Also another symbol to its Left [Outboard side]
If you look there are actually 3 locations. (One centered on the trailing edge) This is so if the flap needs to be removed it can be done so with a hoist. Using these three locations will the mechanics the balance points, and the flap can be easily removed.
"It's not the size of the dog in the fight, but the size of the fight in the dog"