575 

Federal Aviation Administration, DOT 

§ 139.307 

(e) As appropriate, comply with the 

following training requirements of this 
part: 

(1) § 139.319, Aircraft rescue and fire-

fighting: Operational requirements; 

(2) § 139.321, Handling and storage of 

hazardous substances and materials; 

(3) § 139.327, Self-inspection program; 
(4) § 139.329, Pedestrians and Ground 

Vehicles; 

(5) § 139.337, Wildlife hazard manage-

ment; 

(6) § 139.339, Airport condition report-

ing; and 

(7) § 139.402, Components of airport 

safety management system. 

(f) Use an independent organization, 

or designee, to comply with the re-
quirements of its Airport Certification 
Manual and the requirements of this 
part only if— 

(1) Such an arrangement is author-

ized by the Administrator; 

(2) A description of responsibilities 

and duties that will be assumed by an 
independent organization or designee is 
specified in the Airport Certification 
Manual; and 

(3) The independent organization or 

designee prepares records required 
under this part in sufficient detail to 
assure the certificate holder and the 
Administrator of adequate compliance 
with the Airport Certification Manual 
and the requirements of this part. 

[Doc. No. FAA–2000–7479, 69 FR 6424, Feb. 10, 
2004; Amdt. 139–26, 69 FR 31522, June 4, 2004, 
as amended by Amdt. 139–27, 78 FR 3316, Jan. 
16, 2013; Docket No. FAA–2010–0997;Amdt. No. 
139–28, 88 FR 11672, Feb. 23, 2023] 

§ 139.305 Paved areas. 

(a) In a manner authorized by the Ad-

ministrator, each certificate holder 
must maintain, and promptly repair 
the pavement of, each runway, taxi-
way, loading ramp, and parking area 
on the airport that is available for air 
carrier use as follows: 

(1) The pavement edges must not ex-

ceed 3 inches difference in elevation be-
tween abutting pavement sections and 
between pavement and abutting areas. 

(2) The pavement must have no hole 

exceeding 3 inches in depth nor any 
hole the slope of which from any point 
in the hole to the nearest point at the 
lip of the hole is 45 degrees or greater, 
as measured from the pavement surface 

plane, unless, in either case, the entire 
area of the hole can be covered by a 5- 
inch diameter circle. 

(3) The pavement must be free of 

cracks and surface variations that 
could impair directional control of air 
carrier aircraft, including any pave-
ment crack or surface deterioration 
that produces loose aggregate or other 
contaminants. 

(4) Except as provided in paragraph 

(b) of this section, mud, dirt, sand, 
loose aggregate, debris, foreign objects, 
rubber deposits, and other contami-
nants must be removed promptly and 
as completely as practicable. 

(5) Except as provided in paragraph 

(b) of this section, any chemical sol-
vent that is used to clean any pave-
ment area must be removed as soon as 
possible, consistent with the instruc-
tions of the manufacturer of the sol-
vent. 

(6) The pavement must be suffi-

ciently drained and free of depressions 
to prevent ponding that obscures 
markings or impairs safe aircraft oper-
ations. 

(b) Paragraphs (a)(4) and (a)(5) of this 

section do not apply to snow and ice 
accumulations and their control, in-
cluding the associated use of materials, 
such as sand and deicing solutions. 

(c) FAA Advisory Circulars contain 

methods and procedures for the main-
tenance and configuration of paved 
areas that are acceptable to the Ad-
ministrator. 

[Doc. No. FAA–2000–7479, 69 FR 6424, Feb. 10, 
2004; Amdt. 139–26, 69 FR 31522, June 4, 2004] 

§ 139.307 Unpaved areas. 

(a) In a manner authorized by the Ad-

ministrator, each certificate holder 
must maintain and promptly repair the 
surface of each gravel, turf, or other 
unpaved runway, taxiway, or loading 
ramp and parking area on the airport 
that is available for air carrier use as 
follows: 

(1) No slope from the edge of the full- 

strength surfaces downward to the ex-
isting terrain must be steeper than 2:1. 

(2) The full-strength surfaces must 

have adequate crown or grade to assure 
sufficient drainage to prevent ponding. 

(3) The full-strength surfaces must be 

adequately compacted and sufficiently 
stable to prevent rutting by aircraft or