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657 

Federal Aviation Administration, DOT 

§ 145.59 

United States is effective from the date 
of issue until the last day of the 12th 
month after the date of issue unless 
the repair station surrenders the cer-
tificate and the FAA accepts it for can-
cellation, or the FAA suspends or re-
vokes it. The FAA may renew the cer-
tificate or rating for 24 months if the 
repair station has operated in compli-
ance with the applicable requirements 
of part 145 within the preceding certifi-
cate duration period. 

(c) A certificated repair station lo-

cated outside the United States that 
applies for a renewal of its repair sta-
tion certificate must— 

(1) Submit its request for renewal no 

later than 30 days before the repair sta-
tion’s current certificate expires. If a 
request for renewal is not made within 
this period, the repair station must fol-
low the application procedures in 
§ 145.51. 

(2) Send its request for renewal to the 

FAA office that has jurisdiction over 
the certificated repair station. 

(3) Show that the fee prescribed by 

the FAA has been paid. 

(d) The holder of an expired, surren-

dered, suspended, or revoked certifi-
cate must return it to the FAA. 

[Doc. No. FAA–1999–5836, 66 FR 41117, Aug. 6, 
2001, as amended by Amdt. 145–30, 79 FR 
46984, Aug. 12, 2014] 

§ 145.57 Amendment to or transfer of 

certificate. 

(a) A repair station certificate holder 

applying for a change to its certificate 
must submit a request in a format ac-
ceptable to the Administrator. A 
change to the certificate must include 
certification in compliance with 
§ 145.53(c) or (d), if not previously sub-
mitted. A certificate change is nec-
essary if the certificate holder— 

(1) Changes the name or location of 

the repair station, or 

(2) Requests to add or amend a rat-

ing. 

(b) If the holder of a repair station 

certificate sells or transfers its assets 
and the new owner chooses to operate 
as a repair station, the new owner must 
apply for an amended or new certifi-
cate in accordance with § 145.51. 

[Doc. No. FAA–2006–26408, 79 FR 46984, Aug. 
12, 2014] 

§ 145.59 Ratings. 

The following ratings are issued 

under this subpart: 

(a) 

Airframe ratings. 

(1) 

Class 1: 

Com-

posite construction of small aircraft. 

(2) 

Class 2: 

Composite construction of 

large aircraft. 

(3) 

Class 3: 

All-metal construction of 

small aircraft. 

(4) 

Class 4: 

All-metal construction of 

large aircraft. 

(b) 

Powerplant ratings. 

(1) 

Class 1: 

Re-

ciprocating engines of 400 horsepower 
or less. 

(2) 

Class 2: 

Reciprocating engines of 

more than 400 horsepower. 

(3) 

Class 3: 

Turbine engines. 

(c) 

Propeller ratings. 

(1) 

Class 1: 

Fixed- 

pitch and ground-adjustable propellers 
of wood, metal, or composite construc-
tion. 

(2) 

Class 2: 

Other propellers, by make. 

(d) 

Radio ratings. 

(1) 

Class 1: 

Commu-

nication equipment. Radio transmit-
ting and/or receiving equipment used in 
an aircraft to send or receive commu-
nications in flight, regardless of carrier 
frequency or type of modulation used. 
This equipment includes auxiliary and 
related aircraft interphone systems, 
amplifier systems, electrical or elec-
tronic intercrew signaling devices, and 
similar equipment. This equipment 
does not include equipment used for 
navigating or aiding navigation of air-
craft, equipment used for measuring al-
titude or terrain clearance, other 
measuring equipment operated on 
radio or radar principles, or mechan-
ical, electrical, gyroscopic, or elec-
tronic instruments that are a part of 
communications radio equipment. 

(2) 

Class 2: 

Navigational equipment. A 

radio system used in an aircraft for en 
route or approach navigation. This 
does not include equipment operated 
on radar or pulsed radio frequency 
principles, or equipment used for meas-
uring altitude or terrain clearance. 

(3) 

Class 3: 

Radar equipment. An air-

craft electronic system operated on 
radar or pulsed radio frequency prin-
ciples. 

(e) 

Instrument ratings. 

(1) 

Class 1: 

Me-

chanical. A diaphragm, bourdon tube, 
aneroid, optical, or mechanically driv-
en centrifugal instrument used on air-
craft or to operate aircraft, including 

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658 

14 CFR Ch. I (1–1–24 Edition) 

§ 145.61 

tachometers, airspeed indicators, pres-
sure gauges drift sights, magnetic com-
passes, altimeters, or similar mechan-
ical instruments. 

(2) 

Class 2: 

Electrical. Self-syn-

chronous and electrical-indicating in-
struments and systems, including re-
mote indicating instruments, cylinder 
head temperature gauges, or similar 
electrical instruments. 

(3) 

Class 3: 

Gyroscopic. An instru-

ment or system using gyroscopic prin-
ciples and motivated by air pressure or 
electrical energy, including automatic 
pilot control units, turn and bank indi-
cators, directional gyros, and their 
parts, and flux gate and gyrosyn com-
passes. 

(4) 

Class 4: 

Electronic. An instrument 

whose operation depends on electron 
tubes, transistors, or similar devices, 
including capacitance type quantity 
gauges, system amplifiers, and engine 
analyzers. 

(f) 

Accessory ratings. 

(1) 

Class 1: 

A me-

chanical accessory that depends on 
friction, hydraulics, mechanical link-
age, or pneumatic pressure for oper-
ation, including aircraft wheel brakes, 
mechanically driven pumps, carbu-
retors, aircraft wheel assemblies, shock 
absorber struts and hydraulic servo 
units. 

(2) 

Class 2: 

An electrical accessory 

that depends on electrical energy for 
its operation, and a generator, includ-
ing starters, voltage regulators, elec-
tric motors, electrically driven fuel 
pumps magnetos, or similar electrical 
accessories. 

(3) 

Class 3: 

An electronic accessory 

that depends on the use of an electron 
tube transistor, or similar device, in-
cluding supercharger, temperature, air 
conditioning controls, or similar elec-
tronic controls. 

§ 145.61 Limited ratings. 

(a) The FAA may issue a limited rat-

ing to a certificated repair station that 
maintains or alters only a particular 
type of airframe, powerplant, propeller, 
radio, instrument, or accessory, or part 
thereof, or performs only specialized 
maintenance requiring equipment and 
skills not ordinarily performed under 
other repair station ratings. Such a 
rating may be limited to a specific 
model aircraft, engine, or constituent 

part, or to any number of parts made 
by a particular manufacturer. 

(b) The FAA issues limited ratings 

for— 

(1) Airframes of a particular make 

and model; 

(2) Engines of a particular make and 

model; 

(3) Propellers of a particular make 

and model; 

(4) Instruments of a particular make 

and model; 

(5) Radio equipment of a particular 

make and model; 

(6) Accessories of a particular make 

and model; 

(7) Landing gear components; 
(8) Floats, by make; 
(9) Nondestructive inspection, test-

ing, and processing; 

(10) Emergency equipment; 
(11) Rotor blades, by make and 

model; 

(12) Aircraft fabric work; 
(13) Any other purpose for which the 

FAA finds the applicant’s request is ap-
propriate. 

(c) For a limited rating for special-

ized services, the operations specifica-
tions of the repair station must con-
tain the specification used to perform 
the specialized service. The specifica-
tion may be— 

(1) A civil or military specification 

currently used by industry and ap-
proved by the FAA, or 

(2) A specification developed by the 

applicant and approved by the FAA. 

[Docket No. FAA–1999–5836, 66 FR 41117, Aug. 
6, 2001, as amended by Docket FAA–2016–8744, 
Amdt. 145–31, 81 FR 49163, July 27, 2016] 

Subpart C—Housing, Facilities, 

Equipment, Materials, and Data 

S

OURCE

: Docket No. FAA–1999–5836, 66 FR 

41117, Aug. 6, 2001, unless otherwise noted. 

§ 145.101 General. 

A certificated repair station must 

provide housing, facilities, equipment, 
materials, and data that meet the ap-
plicable requirements for the issuance 
of the certificate and ratings the repair 
station holds.