****This question is far more relevant now than years ago or Nov12 when the above individual raised this question!. ****
In 2012 someone touched this topic but no conclusive information was published by anyone, I was not aware this topic was discussed before, I visited “FlightAware” to find out why N440KB a notorious, rogue helicopter is running two helicopters with a same registration number, 1. N440KB, a white helicopter and 2. N440KB another a black helicopter, both with same registration number, and both belongs to same company. Between 2pm and 2.45pm both helicopters were flying in west side of Vegas over homes, parks, residential areas!!..
Check out the pictures (black helicopter) under my handle and also check the latest pic (white helicopter on FlightAware site). But, this helicopter story is just the tip of an iceberg of registration being used to fly more than one plane with same registration number, please read further and participate, no name calling or abusive messages, be mindful. Thanks.
As per the FAA regulations and policies, one registration number per plane or whatever the crafts may be such as helicopter, Cessna or military and other planes. While there may be some exceptions as you all discussed already here, the usage of same registration number for more one plane is pervasive now, I can prove it.
The fact (that is no longer fact now) is that we all know one registration number per plane, that is only for the text books or a disguised policy!?.
That is not what is happening in the recent years, since 2012 there are planes (passenger planes/commercial airlines) are flying two planes with the same registration number and same call sign!. Yes, you do not believe this right?. I will post the details after I hear from you good folks.
And, in some cases, they greyed out or block out the registration number, all else equal and same, everything same, same destination, departure, call sign, plane no, plane name, plane size and shape and so on everything is same and the only difference I have seen is a slightly different altitude but flying together parallelly or one above and the other below or one in front and other in the back on plane path, or flying simultaneously into entirely different direction of paths?.
Most of those are planes (like Southwest, Delta, Allegiant, spirit, rogue, BA, Rogue, virigin prostitute planes)!!??), and many others.
Occasionally I noticed Cessna’s or helicopters with same registration number flying more than one, but this is not that common, just now Oct15, 2017 at 4.20pm, a white helicopter with registration no N440KB flew over my place, but there is already a black helicopter with N440KB is in the air flying near Red Rock area, Las Vegas?. How is this possible?.
I will write more after I hear the response to my posting…Thanks
PS: What is in the Books are no longer followed in todays world, and what you read or heard may not be true anymore until you clarify with evidence!!!.