856 

14 CFR Ch. I (1–1–19 Edition) 

Pt. 43, App. D 

current Regulations of the Federal Aviation 
Agency and is approved for return to service. 

Pertinent details of the repair are on file 

at this repair station under Order No. 

lll

, 

Date 

lllllllllllllllllllll

Signed 

llllllllllllllllllll

For signature of authorized representative) 

Repair station name)

(Certificate No.) 

llllllllllll

.’’ 

(Address) 

(c) Except as provided in paragraph (d) of 

this appendix, for a major repair or major al-
teration made by a person authorized in 
§ 43.17, the person who performs the major re-
pair or major alteration and the person au-
thorized by § 43.17 to approve that work shall 
execute an FAA Form 337 at least in dupli-
cate. A completed copy of that form shall 
be— 

(1) Given to the aircraft owner; and 
(2) Forwarded to the Federal Aviation Ad-

ministration, Aircraft Registration Branch, 
Post Office Box 25504, Oklahoma City, OK 
73125, within 48 hours after the work is in-
spected. 

(d) For extended-range fuel tanks installed 

within the passenger compartment or a bag-
gage compartment, the person who performs 
the work and the person authorized to ap-
prove the work by § 43.7 shall execute an FAA 
Form 337 in at least triplicate. A completed 
copy of that form shall be— 

(1) Placed on board the aircraft as specified 

in § 91.417 of this chapter; 

(2) Given to the aircraft owner; and 
(3) Forwarded to the Federal Aviation Ad-

ministration, Aircraft Registration Branch, , 
Post Office Box 25724, Oklahoma City, OK 
73125, within 48 hours after the work is in-
spected. 

(Secs. 101, 610, 72 Stat. 737, 780, 49 U.S.C. 1301, 
1430) 

[Doc. No. 1993, 29 FR 5451, Apr. 23, 1964, as 
amended by Amdt. 43–10, 33 FR 15989, Oct. 31, 
1968; Amdt. 43–29, 52 FR 34101, Sept. 9, 1987; 
Amdt. 43–31, 54 FR 34330, Aug. 18, 1989; 71 FR 
58495, Oct. 4, 2006; Amdt. 43–41, 72 FR 53680, 
Sept. 20, 2007; Doc. No. FAA–2018–0119, Amdt. 
43–50, 83 FR 9170, Mar. 5, 2018] 

A

PPENDIX

C 

TO

P

ART

43 [R

ESERVED

] 

A

PPENDIX

D 

TO

P

ART

43—S

COPE AND

D

E

-

TAIL OF

I

TEMS

(

AS

A

PPLICABLE TO

 

THE

P

ARTICULAR

A

IRCRAFT

) T

O

B

E

 

I

NCLUDED IN

A

NNUAL AND

100-H

OUR

 

I

NSPECTIONS

 

(a) Each person performing an annual or 

100-hour inspection shall, before that inspec-
tion, remove or open all necessary inspection 
plates, access doors, fairing, and cowling. He 
shall thoroughly clean the aircraft and air-
craft engine. 

(b) Each person performing an annual or 

100-hour inspection shall inspect (where ap-
plicable) the following components of the fu-
selage and hull group: 

(1) Fabric and skin—for deterioration, dis-

tortion, other evidence of failure, and defec-
tive or insecure attachment of fittings. 

(2) Systems and components—for improper 

installation, apparent defects, and unsatis-
factory operation. 

(3) Envelope, gas bags, ballast tanks, and 

related parts—for poor condition. 

(c) Each person performing an annual or 

100-hour inspection shall inspect (where ap-
plicable) the following components of the 
cabin and cockpit group: 

(1) Generally—for uncleanliness and loose 

equipment that might foul the controls. 

(2) Seats and safety belts—for poor condi-

tion and apparent defects. 

(3) Windows and windshields—for deterio-

ration and breakage. 

(4) Instruments—for poor condition, 

mounting, marking, and (where practicable) 
improper operation. 

(5) Flight and engine controls—for im-

proper installation and improper operation. 

(6) Batteries—for improper installation and 

improper charge. 

(7) All systems—for improper installation, 

poor general condition, apparent and obvious 
defects, and insecurity of attachment. 

(d) Each person performing an annual or 

100-hour inspection shall inspect (where ap-
plicable) components of the engine and na-
celle group as follows: 

(1) Engine section—for visual evidence of 

excessive oil, fuel, or hydraulic leaks, and 
sources of such leaks. 

(2) Studs and nuts—for improper torquing 

and obvious defects. 

(3) Internal engine—for cylinder compres-

sion and for metal particles or foreign mat-
ter on screens and sump drain plugs. If there 
is weak cylinder compression, for improper 
internal condition and improper internal tol-
erances. 

(4) Engine mount—for cracks, looseness of 

mounting, and looseness of engine to mount. 

(5) Flexible vibration dampeners—for poor 

condition and deterioration. 

(6) Engine controls—for defects, improper 

travel, and improper safetying. 

(7) Lines, hoses, and clamps—for leaks, im-

proper condition and looseness. 

(8) Exhaust stacks—for cracks, defects, and 

improper attachment. 

(9) Accessories—for apparent defects in se-

curity of mounting. 

(10) All systems—for improper installation, 

poor general condition, defects, and insecure 
attachment. 

(11) Cowling—for cracks, and defects. 
(e) Each person performing an annual or 

100-hour inspection shall inspect (where ap-
plicable) the following components of the 
landing gear group: 

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