Ptrjong From Netherlands, joined Mar 2005, 3904 posts, RR: 19 Posted (7 years 8 months 3 weeks 6 days 7 hours ago) and read 3089 times:
It's not a big deal, but I somehow like to see the database tidy.
I had a picture accepted today of a Patrouille de France Alpha Jet. I noted that somebody - a screener I presume - changed the registration from 'E130' into 'F-TERP'. I don't quite understand why.
As far as I know, the tail number on a French military aircraft, for example '7' for a Rafale or 'E33' for an Alpha Jet, is, despite its simplicity, the aircraft's true registration (serial). In the French system, the serial only needs to be unique within the aircraft type. It's therefore often the same as the construction number.
Then each aircraft has a radio call sign, which looks like a French civil registration, but is not, eg 'F-TERP'. In the case of my Patrouille de France Alpha Jet, this call sign is painted on the aircraft (albeit without the dash), while 'E130' is not. Still, I think 'FTERP' is merely a call sign.
To add to the confusion, many uploaders treat unit codes of French AF aircraft, ie '7-HH' as the registration, and this seems to be acceptable to the site. However, these codes can change frequently, which means the identity of the airframe on a photo gets lost.
Maybe one of the database editors can shed some light on this.
The only difference between me and a madman is that I am not mad (Salvador Dali)
Skidmarks From UK - England, joined Dec 2004, 7121 posts, RR: 55
Reply 2, posted (7 years 8 months 3 weeks 5 days 19 hours ago) and read 3038 times:
It all depends whether you are a spotter in the complete sense, ie writing down the numbers and correlating all your information, or simply an aircraft photographer, where simple identification is adequate.
Your average spotter (number cruncher) will use the c/n / serial number to identify the aircraft, adding the code as an aid to identifying the unit it is currently with. The callsign is also an aid if you know the period in which you saw the aircraft.
Whereas the photographer will use any means to identify the aircraft, which in many cases is the code or callsign, the actual serial being too small to see.
All the DB has to do is define the method which they wish to record the picture, whether by serial number or whatever is visible on the aircraft.
Personally I would prefer to see serial numbers used as this would aid consistancy in the DB.
Invader From Netherlands, joined Feb 2000, 325 posts, RR: 10
Reply 3, posted (7 years 8 months 3 weeks 5 days 14 hours ago) and read 3008 times:
AIRLINERS.NET CREW DATABASE EDITOR
To have a meaningful database for searching purposes, everybody should preferably list the same things the same way. For French military aircraft our policy is to use the small tailnumber as the registration and the rest as the code.
In fact, this is already stated in the Help item for the Registration at the Upload Page, where it says:
"French military and semi-military aircraft except the Navy: use the small number on the fin (which is often the cn) as the registration and insert the squadron code in the code field. E.g. the small “109” on the fin is the registration, the larger “12-KF” is the code. French Navy aircraft only have a number which is the registration".
The codes (which are doubling as callsigns) should be listed as they are painted on the aircraft, and not filled-up to make them "complete". When e.g. a Falcon 20 has code "A" it should not be filled-up to "F-RAEA".
Codes can be made up in different ways:
Squadron number followed by two letters, as illustrated by the 5-OP code on the Mirage 2000 below. The 5 is for squadron EC02.005, and OP is the individual aircraft code. In full this code OP is callsign F-UGOP. Note the registration 508 on the fin. An example with a two-number squadron code is the ET3/64 Noratlas below, code 64-BK, which makes it callsign F-RABK. On the fin and the nose you see the registration 148.
There are also squadrons with three numbers, like this T-33 with code 314-UQ (callsign F-TEUQ) and registration 14349 on the fin (the registration is here not the cn but a contraction of the previous US serial) or this TB-30 coded 315-XS (callsign F-TEXS) with registration 102.
Sometimes the squadron number is not used and only the last two letters are painted on the aircraft, like at this Nord 262 with code AW (callsign F-RBAW) and registration 80 (difficult to see on the photo, it is in the red square on the fin). Another example is DC-8 with code FG (on the nosewheeldoor, callsign F-RAFG), and registration 46013 on the fin.
It can be even more anonymous with just one letter only, like on the presidential Falcon 20 which had the code A on the tip of the nose only (callsign F-RAEA, registration 260) and SA-330 Puma coded R on the nose (registration 1257, callsign F-RAFR), unfortunately no examples for those are in the database (yet). But SE-3200 registration 001 coded S (full callsign unknown, probably F-Z**S) and Jaguar registration A04 coded E (callsign F-ZWRE) are more prominent examples in the database.
In contrast, sometimes the full callsign is painted on the aircraft, like this Alpha Jet F-TERK (registration E31 can be found on the nosewheeldoor) and TB-30 F-SEXQ (also here, the registration 100 is on the nosewheeldoor). Also in those cases, the code has to be listed in the code field.
And then we have the aircraft which carry the full code, but don't have their registration (fin serial) painted on. In those cases we still list the number as the registration (which will have to be found by checking documentation or other photos) and list the F-R*** in the code field. Examples are Airbus A310 coded F-RADB with registration 422 and Falcon 20 coded F-RAED with registration 93 (although in this case the registration is carried, but so small that it is almost unreadable, it is below "Dassault" on the rudder.
Finally, there are also aircraft which do not carry a code, only their serial. If the callsign is known for those cases and if the photographer wants to add it, it shall not be placed in the code field (as it is not carried) but in the remarks field. Examples are Falcon 900 registration 2 (I think it is painted very small on the rudder) and Falcon 50 registration 34.
At the moment a very large number of photos in the database is unfortunately not yet up to these conventions, but the editors will work on it. By the way, these same conventions apply to Army and semi military agencies too.
I hope this explanation helps for a better understanding and for more standardized uploading.
Thanks for the clarification Peter, and for explaining that the unit codes and call signs are closely related.
I had forgotten that the help text actually gives guidance for French military aircraft. Seeing this, although this may not be a popular point of view, I think more info rejections should be given when the registration field, in particular, is messed up.
In the case of my Patrouille de France Alpha Jet, I gather that I was right about E130 as the registration, and that the code should be F-TERP/1, right?