Replies

“The board head the object passed directly beneath the plane before either of the crew had time to take avoiding action or had ‘really registered it’ although they were both agreed that it appeared blue and yellow or silver in colour with a small frontal area but that it was ‘bigger than a balloon’.”

The “UFO” that was 300 feet from the A320 approaching Glasgow at 3,500 feet was Blue and yellow or silver? I did a search on “blue yellow model copter” and sorted to the larger ones that would be capable of attaining 3,500 feet with the hardware for first-person view (FPV) video piloting installed as described here:

“Video piloting (first-person view)”

http://en.wikipedia.org/wiki/Radio-controlled_aircraft

“First-person view (FPV) flight is a type of remote-control flying that has grown in popularity in recent years. It involves mounting a small video camera and television transmitter on an RC aircraft and flying by means of a live video down-link, commonly displayed on video goggles or a portable LCD screen. When flying FPV, the pilot sees from the aircraft’s perspective, and does not even have to look at the model. As a result, FPV aircraft can be flown well beyond visual range, limited only by the range of the remote control and video transmitter. Video transmitters typically operate at a power level between 200 mW and 1500 mW. The most common frequencies used for video transmission are 900 MHz, 1.2 GHz, 2.4 GHz, and 5.8 GHz.[5] Specialized long-range UHF control systems operating at 433 MHz (for amateur radio licensees only) or 869 MHz[5] are commonly used to achieve greater control range, while the use of directional, high-gain antennas increases video range. Sophisticated setups are capable of achieving a range of 20–30 miles or more.”

I quickly came up with a large, newly available, high-performance, bright BLUE and YELLOW copter with a 6.5 foot diameter SILVER rotor, the “GOBLIN 770” by “44GHz”:

“Goblin 770 Initial Color Scheme”

http://www.44ghz.com/goblin-770-initial-color-scheme/

At the link just below are videos of the Goblin 770 doing stupefying aerial acrobatics as well as achieving very high velocity (one video is of the Blue and Yellow model):

“Goblin 770 and Kyle Stacey” (try and fail to destroy the copter at high speed, high gravity)

http://www.44ghz.com/goblin-770-and-kyle-stacey/

“If you can’t get enough Goblin 770 action, check out this video of the new 800-sized electric bird being flown by SAB Heli Division Team Pilot, Kyle Stacey. This piece of mechanical artwork sells for just shy of $1,200 US in kit form (the helicopter, not Kyle). ... :)”

If not this one, a mini-copter in this class would be my best guess for the UFO involved in the Glasgow near miss.