The rego number is perhaps the most important way of truly identifying an aircraft (single rotor, jet, etc). All aircraft have them. This information should be provided and, in any good photograph, the registration number is usually visible in order to enter the data in the upload page.
Also additional, or rather, more precise information in the remarks field adds a richer explanation of the particuar happenings at the time the photo was taken. This field is optional really but Bruce's
remarks about the fortress in the background of the helo photo serves as an example of precision of information. (that chopper photo does seem a tad dark too - try to lighten it up a bit).
Third, proper aircraft information is preferred. I myself, at one point a couple of years ago, couldn't distinguish an A320 from an A330 (believe it or not). For me the reasoning was: "As long as it flies - what's the difference". I would check other entries in the database by doing a search based on the registry and find out the aircraft type and then make the effort to enter that data to keep a standard. There are other sources on the internet that help individuals identify aircraft types (fixed wing, whirlybirds, etc) by their respective registration number. Here are a couple of sites to start you off (no particular alphabetical order):
Canada - Canadian C-number registries search
- UK registries (g-number)
- US registries (N number)
- German registry search (d-number)
- Austrian registry search (OE-number)
- Swiss registries
- Dutch registry search
- Australian registry search
- Italian rego search
Hope these links help you and others in determining the aircraft type based on the registration number before uploading.