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847 

Federal Aviation Administration, DOT 

§ 43.3 

(1) The repair or alteration form 

specified in §§ 43.5(b) and 43.9(d) is not 
required to be completed for products 
not produced under an FAA approval; 

(2) Major repairs and major alter-

ations for products not produced under 
an FAA approval are not required to be 
recorded in accordance with appendix B 
of this part; and 

(3) The listing of major alterations 

and major repairs specified in para-
graphs (a) and (b) of appendix A of this 
part is not applicable to products not 
produced under an FAA approval. 

[Doc. No. 1993, 29 FR 5451, Apr. 23, 1964, as 
amended by Amdt. 43–23, 47 FR 41084, Sept. 
16, 1982; Amdt. 43–37, 66 FR 21066, Apr. 27, 
2001; Amdt. 43–38, 67 FR 2109, Jan. 15, 2002; 
Amdt. 43–39, 69 FR 44863, July 27, 2004; Amdt. 
43–44, 75 FR 5219, Feb. 1, 2010; Docket FAA– 
2015–0150, Amdt. 43–48, 81 FR 42208, June 28, 
2016; Docket FAA–2018–1087, Amdt. 43–51, 86 
FR 4381, Jan. 15, 2021] 

§ 43.2

Records of overhaul and rebuild-

ing. 

(a) No person may describe in any re-

quired maintenance entry or form an 
aircraft, airframe, aircraft engine, pro-
peller, appliance, or component part as 
being overhauled unless— 

(1) Using methods, techniques, and 

practices acceptable to the Adminis-
trator, it has been disassembled, 
cleaned, inspected, repaired as nec-
essary, and reassembled; and 

(2) It has been tested in accordance 

with approved standards and technical 
data, or in accordance with current 
standards and technical data accept-
able to the Administrator, which have 
been developed and documented by the 
holder of the type certificate, supple-
mental type certificate, or a material, 
part, process, or appliance approval 
under part 21 of this chapter. 

(b) No person may describe in any re-

quired maintenance entry or form an 
aircraft, airframe, aircraft engine, pro-
peller, appliance, or component part as 
being rebuilt unless it has been dis-
assembled, cleaned, inspected, repaired 
as necessary, reassembled, and tested 
to the same tolerances and limits as a 
new item, using either new parts or 
used parts that either conform to new 
part tolerances and limits or to ap-

proved oversized or undersized dimen-
sions. 

[Amdt. 43–23, 47 FR 41084, Sept. 16, 1982, as 
amended by Amdt. 43–43, 74 FR 53394, Oct. 16, 
2009] 

§ 43.3

Persons authorized to perform 

maintenance, preventive mainte-
nance, rebuilding, and alterations. 

(a) Except as provided in this section 

and § 43.17, no person may maintain, re-
build, alter, or perform preventive 
maintenance on an aircraft, airframe, 
aircraft engine, propeller, appliance, or 
component part to which this part ap-
plies. Those items, the performance of 
which is a major alteration, a major re-
pair, or preventive maintenance, are 
listed in appendix A. 

(b) The holder of a mechanic certifi-

cate may perform maintenance, pre-
ventive maintenance, and alterations 
as provided in Part 65 of this chapter. 

(c) The holder of a repairman certifi-

cate may perform maintenance, pre-
ventive maintenance, and alterations 
as provided in part 65 of this chapter. 

(d) A person working under the su-

pervision of a holder of a mechanic or 
repairman certificate may perform the 
maintenance, preventive maintenance, 
and alterations that his supervisor is 
authorized to perform, if the supervisor 
personally observes the work being 
done to the extent necessary to ensure 
that it is being done properly and if the 
supervisor is readily available, in per-
son, for consultation. However, this 
paragraph does not authorize the per-
formance of any inspection required by 
Part 91 or Part 125 of this chapter or 
any inspection performed after a major 
repair or alteration. 

(e) The holder of a repair station cer-

tificate may perform maintenance, pre-
ventive maintenance, and alterations 
as provided in Part 145 of this chapter. 

(f) The holder of an air carrier oper-

ating certificate or an operating cer-
tificate issued under Part 121 or 135, 
may perform maintenance, preventive 
maintenance, and alterations as pro-
vided in Part 121 or 135. 

(g) Except for holders of a sport pilot 

certificate, the holder of a pilot certifi-
cate issued under part 61 may perform 
preventive maintenance on any air-
craft owned or operated by that pilot 
which is not used under part 121, 129, or 

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848 

14 CFR Ch. I (1–1–24 Edition) 

§ 43.5 

135 of this chapter. The holder of a 
sport pilot certificate may perform 
preventive maintenance on an aircraft 
owned or operated by that pilot and 
issued a special airworthiness certifi-
cate in the light-sport category. 

(h) Notwithstanding the provisions of 

paragraph (g) of this section, the Ad-
ministrator may approve a certificate 
holder under Part 135 of this chapter, 
operating rotorcraft in a remote area, 
to allow a pilot to perform specific pre-
ventive maintenance items provided— 

(1) The items of preventive mainte-

nance are a result of a known or sus-
pected mechanical difficulty or mal-
function that occurred en route to or 
in a remote area; 

(2) The pilot has satisfactorily com-

pleted an approved training program 
and is authorized in writing by the cer-
tificate holder for each item of preven-
tive maintenance that the pilot is au-
thorized to perform; 

(3) There is no certificated mechanic 

available to perform preventive main-
tenance; 

(4) The certificate holder has proce-

dures to evaluate the accomplishment 
of a preventive maintenance item that 
requires a decision concerning the air-
worthiness of the rotorcraft; and 

(5) The items of preventive mainte-

nance authorized by this section are 
those listed in paragraph (c) of appen-
dix A of this part. 

(i) Notwithstanding the provisions of 

paragraph (g) of this section, in accord-
ance with an approval issued to the 
holder of a certificate issued under part 
135 of this chapter, a pilot of an air-
craft type-certificated for 9 or fewer 
passenger seats, excluding any pilot 
seat, may perform the removal and re-
installation of approved aircraft cabin 
seats, approved cabin-mounted stretch-
ers, and when no tools are required, ap-
proved cabin-mounted medical oxygen 
bottles, provided— 

(1) The pilot has satisfactorily com-

pleted an approved training program 
and is authorized in writing by the cer-
tificate holder to perform each task; 
and 

(2) The certificate holder has written 

procedures available to the pilot to 
evaluate the accomplishment of the 
task. 

(j) A manufacturer may— 

(1) Rebuild or alter any aircraft, air-

craft engine, propeller, or appliance 
manufactured by him under a type or 
production certificate; 

(2) Rebuild or alter any appliance or 

part of aircraft, aircraft engines, pro-
pellers, or appliances manufactured by 
him under a Technical Standard Order 
Authorization, an FAA-Parts Manufac-
turer Approval, or Product and Process 
Specification issued by the Adminis-
trator; and 

(3) Perform any inspection required 

by part 91 or part 125 of this chapter on 
aircraft it manufactured under a type 
certificate, or currently manufactures 
under a production certificate. 

(k) Updates of databases in installed 

avionics meeting the conditions of this 
paragraph are not considered mainte-
nance and may be performed by pilots 
provided: 

(1) The database upload is: 
(i) Initiated from the flight deck; 
(ii) Performed without disassembling 

the avionics unit; and 

(iii) Performed without the use of 

tools and/or special equipment. 

(2) The pilot must comply with the 

certificate holder’s procedures or the 
manufacturer’s instructions. 

(3) The holder of operating certifi-

cates must make available written pro-
cedures consistent with manufacturer’s 
instructions to the pilot that describe 
how to: 

(i) Perform the database update; and 
(ii) Determine the status of the data 

upload. 

[Doc. No. 1993, 29 FR 5451, Apr. 23, 1964, as 
amended by Amdt. 43–4, 31 FR 5249, Apr. 1, 
1966; Amdt. 43–23, 47 FR 41084, Sept. 16, 1982; 
Amdt. 43–25, 51 FR 40702, Nov. 7, 1986; Amdt. 
43–36, 61 FR 19501, May 1, 1996; Amdt. 43–37, 66 
FR 21066, Apr. 27, 2001; Amdt. 43–39, 69 FR 
44863, July 27, 2004; Amdt. 43–43, 74 FR 53394, 
Oct. 16, 2009; Amdt. 43–45, 77 FR 71096, Nov. 
29, 2012] 

§ 43.5

Approval for return to service 

after maintenance, preventive 
maintenance, rebuilding, or alter-
ation. 

No person may approve for return to 

service any aircraft, airframe, aircraft 
engine, propeller, or appliance, that 
has undergone maintenance, preventive 
maintenance, rebuilding, or alteration 
unless— 

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