677 

Federal Aviation Administration, DOT 

§ 151.11 

project in the Federal-aid Airport Pro-
gram only if— 

(1) The advance planning and engi-

neering proposal involves more than 
$1,000 in United States funds; and 

(2) The project application involves 

more than $5,000 in U.S. funds. 

Whenever possible, the sponsor must 
consolidate small projects on a single 
airport in one grant agreement even 
though the airport development is to 
be accomplished over a period of years. 

(c) 

Previously obligated work. 

Unless 

the Administrator specifically author-
izes it, no advance planning and engi-
neering proposal or project application 
may include any planning, engineering, 
or construction work included in a 
prior agreement with the United States 
obligating the sponsor or any other 
non-U.S. public agency to do the work, 
and entitling the sponsor or any other 
non-United States public agency to 
payment of U.S. funds for all or part of 
the work. 

(Secs. 1–15, 17–21, 60 Stat. 170, 49 U.S.C. 1120) 

[Amdt. 151–8, 30 FR 8039, June 23, 1965, as 
amended by Amdt. 151–17, 31 FR 16524, Dec. 
28, 1966; Amdt. 151–19, 32 FR 9220, June 29, 
1967] 

§ 151.9

Runway clear zones: General. 

(a) Whenever funds are allocated for 

developing new runways or landing 
strips, or to improve or repair existing 
runways, the sponsor must own, ac-
quire, or agree to acquire, runway clear 
zones. Exceptions are considered (on 
the basis of a full statement of facts by 
the sponsor) upon a showing of uneco-
nomical acquisition costs, or lack of 
necessity for the acquisition. 

(b) For the purpose of this part, a 

runway clear zone is an area at ground 
level which begins at the end of each 
primary surface defined in § 77.27(a) and 
extends with the width of each ap-
proach surface defined in § 77.27 (b) and 
(c), to terminate directly below each 
approach surface slope at the point, or 
points, where the slope reaches a 
height of 50 feet above the elevation of 
the runway or 50 feet above the terrain 
at the outer extremity of the clear 
zone, whichever distance is shorter. 

(c) For the purposes of this section, 

an airport operator or owner is consid-
ered to have an adequate property in-

terest if it has an easement (or a cov-
enant running with the land) giving it 
enough control to rid the clear zone of 
all obstructions (objects so far as they 
project above the approach surfaces es-
tablished by § 77.27 (b) and (c) of part 77 
of this chapter), and to prevent the cre-
ation of future obstructions; together 
with the right of entrance and exit for 
those purposes, to ensure the safe and 
unrestricted passage of aircraft in and 
over the area. 

[Doc. No. 1329, 27 FR 12349, Dec. 13, 1962, as 
amended by Amdt. 151–7, 30 FR 7484, June 8, 
1965; Amdt. 151–21, 33 FR 258, Jan. 9, 1968] 

§ 151.11

Runway clear zones; require-

ments. 

(a) In projects involving grants-in-aid 

under the Federal-aid Airport Pro-
gram, a sponsor must own, acquire, or 
agree to acquire an adequate property 
interest in runway clear zone areas as 
prescribed in paragraph (b), (c), (d), or 
(e) of this section, as applicable. Prop-
erty interests that a sponsor acquires 
to meet the requirements of this sec-
tion are eligible for inclusion in the 
Program. 

(b) On new airports, the sponsor must 

own, acquire, or agree to acquire ade-
quate property interests in runway 
clear zone areas (in connection with 
initial land acquisition) for all eligible 
runways or landing strips, without sub-
stantial deviation from standard con-
figuration and length. 

(c) On existing airports where new 

runways or landing strips are devel-
oped, the sponsor must own, acquire, or 
agree to acquire adequate property in-
terests in runway clear zone areas for 
each runway and landing strip to be de-
veloped or extended, to the extent that 
the Administrator determines prac-
tical and feasible considering all facts 
presented by the airport owner or oper-
ator, preferably without substantial 
deviation from standard configuration 
and length. 

(d) On existing airports where im-

provements are made to runways or 
landing strips, the sponsor must own, 
acquire, or agree to acquire adequate 
property interests in runway clear zone 
areas for each runway or landing strip 
that is to be improved to the extent 
that the Administrator determines is 
practical and feasible with regard to 

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