Primarily for general aviation discussion, but other aviation topics are also welcome.
#1858704
OK, I find this impressive. This Beech Shadow R1 is on its third circuit (having passed directly overhead our house - scary) and yet the track is so accurate it looks like one circuit.

Unfortunately, hidden in the overcast.

Image

Rob P
By johnm
FLYER Club Member  FLYER Club Member
#1858706
People with roll steering and radius to fix we’re getting similar accuracy on thevGAINS project trying to prove that light aircraft could fly radius to fix approach sectors
#1858709
I could tell you, but I would have to kill you. :guns:

Whether the clue is that the track passes directly over the golf balls on RAF Feltwell, a USAFE operated monitoring base and then RAF Marham I really have no idea.

Zooming in, the three tracks over our village are separated by the width of one small traffic island.

Rob P
By Hooligan
FLYER Club Member  FLYER Club Member
#1858710
His earlier orbits over Norwich were rather more of the plate of spaghetti type!

Had a FCL Navajo orbiting the LON VOR in the wee hours a couple of years ago - I'm about 18 miles from the VOR and I saw him passing about two miles further out at two or three thousand. Flying a perfect a circle or so it appeared on ADSB, he did several laps.
#1858711
He's departed, and an F15 Strike Eagle does a pass directly over the centre of the Shadow's orbit.

Coincidence I expect.

Rob P

Image
#1858719
I seem to recall watching an episode of Air Crash Investigation or whatever it's called on National Geographic/Discovery and the incident was a mid-air collision between a private jet and a 737, in Brazilian airspace (I believe - my memory is patchy).

Anyway, one of the points raised in the investigation was that the autopilot and GPS were so accurate that the two aircraft ended up colliding pretty much head-on - I think it might have been this one:

https://www.vanityfair.com/culture/2009 ... rash200901
#1858732
flyingearly wrote:I seem to recall watching an episode of Air Crash Investigation or whatever it's called on National Geographic/Discovery and the incident was a mid-air collision between a private jet and a 737, in Brazilian airspace (I believe - my memory is patchy).

Anyway, one of the points raised in the investigation was that the autopilot and GPS were so accurate that the two aircraft ended up colliding pretty much head-on - I think it might have been this one:

https://www.vanityfair.com/culture/2009 ... rash200901


which is why you shouldn't really use shared/published waypoints, VRP's or obvious landmarks as turning points when route planning. Also wonder about the logic behind creating a straight line route between two airfields, then flying "the magenta line", just in case someone happens to be flying the other way.

Precision isn't always good!
David Wood liked this
#1858733
Sooty25 wrote:Precision isn't always good!


Should I ever be tempted to fly accurately along the magenta line whilst holding a precise level, I shall resist.

Rob P
Charles Hunt liked this
#1858737
Sooty25 wrote:which is why you shouldn't really use shared/published waypoints, VRP's or obvious landmarks as turning points when route planning.


Unfortunately published waypoints are the only waypoints that IFR navigators easily accept :-(
#1858756
flyingearly wrote:I seem to recall watching an episode of Air Crash Investigation or whatever it's called on National Geographic/Discovery and the incident was a mid-air collision between a private jet and a 737, in Brazilian airspace (I believe - my memory is patchy).

Anyway, one of the points raised in the investigation was that the autopilot and GPS were so accurate that the two aircraft ended up colliding pretty much head-on - I think it might have been this one:

https://www.vanityfair.com/culture/2009 ... rash200901

Yes it was, a 737-800 (PR-GTD of Gol Airline) and an Embraer Legacy (N600XL) on delivery. All 154 on the 737 died when the winglet of the Legacy damaged the underside of the 737 wing; the Legacy landed safely and the crew were detained for two months.

See also https://aviation-safety.net/database/re ... 20060929-1 and https://aviation-safety.net/database/re ... 20060929-0