Starlionblue From Hong Kong, joined Feb 2004, 15871 posts, RR: 66 Reply 1, posted (6 years 8 months 4 days 6 hours ago) and read 3729 times:
The long flat thing is the aileron. It's slightly deflected downwards, giving the illusion of an extension. The little antennalike structure on the trailing edge tip is a visual aid for aerobatics.
"There are no stupid questions, but there are a lot of inquisitive idiots." - from Citadel by John Ringo
N231YE From , joined Dec 1969, posts, RR: Reply 3, posted (6 years 8 months 4 days 6 hours ago) and read 3719 times:
The extension is used as a tool to measure 90º and 45º angles with references to the horizon. Basically, aerobatic pilots, such as Patty Wagstaff, use these devices when they are "maneuvering" (as in stunts).
Quote: Each wingtip has a sighting device to aid in precision maneuvering.
2H4 From United States of America, joined Oct 2004, 8950 posts, RR: 62 Reply 6, posted (6 years 8 months 3 days 9 hours ago) and read 3468 times:
AIRLINERS.NET CREW HEAD DATABASE EDITOR
Quoting HAWK21M (Reply 5): How would that be carried out.
The pilot simply looks to the side, out at the wingtip device, and can align either the 45 or 90 degree bar (and thus, the fuselage) with the horizon. One of the problems with the device is that, on hazy days with no discernable horizon, there is no point of reference, and the device is useless.