873 

Federal Aviation Administration, DOT 

§ 47.15 

(b) A U.S. registration number may 

not exceed five symbols in addition to 
the prefix letter ‘‘N’’. These symbols 
may be all numbers (N10000), one to 
four numbers and one suffix letter (N 
1000A), or one to three numbers and 
two suffix letters (N 100AB). The let-
ters ‘‘I’’ and ‘‘O’’ may not be used. The 
first zero in a number must always be 
preceded by at least one of the numbers 
1 through 9. 

(c) An aircraft manufacturer may 

apply to the Registry for enough U.S. 
registration numbers to supply esti-
mated production for the next 18 
months. There is no charge for this al-
location of numbers. 

(d) Any available, unassigned U.S. 

registration number may be assigned 
as a special registration number. An 
applicant who wants a special registra-
tion number or wants to change the 
registration number of his aircraft may 
apply for it to the Registry. The fee re-
quired by § 47.17 must accompany the 
application. 

(e) [Reserved] 
(f) The Registry authorizes a special 

registration number change on the As-
signment of Special Registration Num-
bers, AC Form 8050–64. The authoriza-
tion expires one year from the date the 
Registry issues an Assignment of Spe-
cial Registration Numbers unless the 
special registration number is perma-
nently placed on the aircraft. Within 
five days after the special registration 
number is placed on the aircraft, the 
owner must complete and sign the As-
signment of Special Registration Num-
bers, state the date the number was 
placed on the aircraft, and return the 
original form to the Registry. The du-
plicate of the Assignment of Special 
Registration Numbers and the present 
Certificate of Aircraft Registration, AC 
Form 8050–3, must be carried in the air-
craft as temporary authority to oper-
ate it. This temporary authority is 
valid until the date the owner receives 
the revised Certificate of Aircraft Reg-
istration showing the new registration 
number, but in no case is it valid for 
more than 120 days from the date the 
number is placed on the aircraft. 

(g) [Reserved] 
(h) A special registration number 

may be reserved for no more than 1 
year. If a person wishes to renew his 

reservation from year to year, he must 
apply to the Registry for renewal and 
submit the fee required by § 47.17 for a 
special registration number. 

(i) When aircraft registration has 

ended, as described in § 47.41(a), the as-
signment of a registration number to 
an aircraft is no longer authorized for 
use except as provided in § 47.31(c) and 
will be cancelled: 

(1) Following the date established in 

§ 47.40(a)(1) for any aircraft that has 
not been re-registered under § 47.40(a); 

(2) Following the expiration date 

shown on the Certificate of Aircraft 
Registration for any aircraft whose 
registration has not been renewed 
under § 47.40(c); 

(3) Following the expiration date 

shown on the Dealer’s Aircraft Reg-
istration Certificate, AC Form 8050–6, 
for any aircraft registered under Sub-
part C of this part, when the certificate 
has not been renewed, and the owner 
has not applied for registration in ac-
cordance with § 47.31; or 

(4) When ownership has transferred— 
(i) Six months after first receipt of 

notice of aircraft sale or evidence of 
ownership from the last registered 
owner or successive owners, and an 
Aircraft Registration Application has 
not been received. 

(ii) Six months after evidence of own-

ership authorized under § 47.67 has been 
submitted, and the applicant has not 
met the requirements of this part. 

(iii) Twelve months after a new 

owner has submitted evidence of own-
ership and an Aircraft Registration Ap-
plication under § 47.31, and the appli-
cant or a successive applicant has not 
met the requirements of this part. 

(j) At the time an assignment of reg-

istration number is cancelled, the num-
ber may be reserved for one year in the 
name of the last owner of record if a re-
quest has been submitted with the fee 
required by § 47.17. If the request for 
reservation and fee are not submitted 
prior to cancellation, the registration 

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