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A/c Registration On Bottom Of Left Wing  
User currently offlineEtops1 From United States of America, joined Nov 2005, 1091 posts, RR: 1
Posted (6 years 6 months 2 weeks 1 day 11 hours ago) and read 1965 times:

i always wondered this. why do non us carriers place the a/c registration on the bottom of the left wing?

5 replies: All unread, jump to last
 
User currently offlineEMBQA From United States of America, joined Oct 2003, 9364 posts, RR: 11
Reply 1, posted (6 years 6 months 2 weeks 1 day 9 hours ago) and read 1879 times:

Because it is not required in the US. There really is no reason for it................Why the rest do it.......?? I really don't know. Old regulations that have not been changed...?

[Edited 2008-03-08 14:10:41]


"It's not the size of the dog in the fight, but the size of the fight in the dog"
User currently offlineKaiGywer From United States of America, joined Oct 2003, 12251 posts, RR: 35
Reply 2, posted (6 years 6 months 2 weeks 1 day 8 hours ago) and read 1808 times:
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Quoting EMBQA (Reply 3):
Because it is not required in the US. There really is no reason for it................Why the rest do it.......?? I really don't know. Old regulations that have not been changed...?

Because some places still require it. I can't access the JAR without buying them, so I'll link to the Norwegian requirements:

Once on each side of the aircraft, minimum 30cm tall.
Once underneath the left wing or both wings in which case nationality goes on the right wing and registration on the left wing. Minimum height 50cm.



BSL A 1-8



911, where is your emergency?
User currently offlineCjbmibe From United Kingdom, joined Jan 2006, 108 posts, RR: 0
Reply 3, posted (6 years 6 months 2 weeks 1 day 7 hours ago) and read 1769 times:

In the UK it is required that all aircraft registrations of UK registered aircraft should be readable (with normal eyesight) from 500ft (or less). This is the minimum an aircraft may fly above an object on the ground except in emergency or approach/landing. By painting the registration on the underside of the wing airlines and indvidual owners cannot get away with dangerous manouvers if someone sees them since the person on the ground can see the registration and report it to the CAA.

Its also the reason its on the side too so that when your not directly underneath you may still see the registration.



How can I soar like an Eagle when I have to work with these turkeys?
User currently offlineEtops1 From United States of America, joined Nov 2005, 1091 posts, RR: 1
Reply 4, posted (6 years 6 months 2 weeks 15 hours ago) and read 1643 times:

thanks guys . i appreceate the replies.

User currently offlineMarky From United Kingdom, joined Nov 2003, 211 posts, RR: 0
Reply 5, posted (6 years 6 months 2 weeks 14 hours ago) and read 1616 times:

The regulations for displaying registration marks are laid out in Annex 7 to the Chicago Convention and all ICAO contracting states should meet the requirements laid out in Annex 7 (for aircraft that fly internationally at any rate).

Some countries have extra requirements (Mexico and Switzerland require the national flag to be displayed for example) but for some reason the USA chooses to ignore the requirement for registration markings on the underside of the port wing.

If anyone is interested, the UK's requirements, which are based directly on Annex 7, can be found here:

http://www.caa.co.uk/docs/33/CAP523.PDF

Hope that helps

Mark


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