DOUBLE
You already have photos of this aircraft in the Airliners.net database that are the same as, or very similar to these photo(s).

In order to receive this rejection, the other (similar) photos in the database must also have been taken by you, at the same day and at the same airport. Please do not upload multiple sequential shots of an aircraft during landing, taxiing or take-off, taken only a few seconds apart. Even though these photos may appear to be from different angles, we consider them similar. Please select the best shot from the sequence and upload only that one. One shot taken during landing, and another during take-off will generally NOT be considered a DOUBLE error.

In certain cases you can also get this rejection if there are photos in the database that are nearly identical to the one(s) rejected here, but taken on another date by you. Examples of this are photos of stored or preserved aircraft that have not moved since you took the other photos.

For window views we accept 2 shots per flight and side of aircraft when they show considerable different motives. So in other words the maximum number of accepted window views of the same registration on the same flight all taken by you would be 4.

We only accept multiple cockpit shots if:

They clearly show different parts of the cockpit.
When the outside view is showing a different airport.
When one is taken in daylight and one taken at night.
Note: This rejection might also occur if you have similar photos in the upload queue that are still awaiting final screening.

accepted shot of N347AN in MAN on 13/11/2004 / rejected shot of N347AN in MAN on 13/11/2004 --> Double rejection, cause same aircraft (registration) + same photographer + same airport + same date + same sequence (taxiing by) - Photo copyright © Paul Markman

accepted shot of AP-BGK in MAN on 24/10/2004 / rejected shot of AP-BGK in MAN on 02/05/2005 --> a photo is also prone to a double rejection if it shows the same aircraft (registration) at the same airport but at different dates if, like the example shown above, the pictures look very similar. - Photo copyright © Paul Markman

accepted shot of 7353 in BRQ on 11/09/2005 / accepted shot of 7353 in BRQ on 11/09/2005 --> NO double rejection, cause different sequence (on the ground + take-off) - Photo copyright © Thierry Deutsch

no double rejection on these window shots as same photographer + same aircraft (reg) + same side BUT different motive (2 different airports: White Plains / Boston) - Photo copyright © Tony Printezis

There are regular misunderstandings concerning double rejections; if that's the case read the above text again and be sure to understand every part of it (especially the part written in bold)!

A small note concerning sequences: you may distinguish 3 different sequences: landing, on the ground (taxiing) and take-off; as a 4th sequence you might add fly-pasts but apart from airshows you'll rarely have one of those. According A.net rules you may only upload ONE photo from each given sequence and rarely you'll get more then 2 shots from the same a/c at the same airport and date accepted even if they are all from different sequences. For the "on the ground" sequence you might get 2 photos of this sequence accepted if they show really different motives like a close taxi by and some interesting (un-)loading action.