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Marv:

Here is Appendix A compliments of www.landings.com. Drill down to the Regulations
section. The exact link is:
http://www3.landings.com/cgi-bin/get_file?pass=13883915&FAR/part_43/appendix_A.html

Enjoy!

Brent


Appendix A--Major Alterations, Major Repairs, and Preventive
Maintenance

(a) Major alterations--(1) Airframe major alterations. Alterations of the
following parts and alterations of the following
types, when not listed in the aircraft specifications issued by the FAA, are
airframe major alterations:
(i) Wings.
(ii) Tail surfaces.
(iii) Fuselage.
(iv) Engine mounts.
(v) Control system.
(vi) Landing gear.
(vii) Hull or floats.
(viii) Elements of an airframe including spars, ribs, fittings, shock absorbers,
bracing, cowling, fairings, and balance
weights.
(ix) Hydraulic and electrical actuating system of components.
(x) Rotor blades.
(xi) Changes to the empty weight or empty balance which result in an increase in
the maximum certificated weight or
center of gravity limits of the aircraft.
(xii) Changes to the basic design of the fuel, oil, cooling, heating, cabin
pressurization, electrical, hydraulic, de-icing,
or exhaust systems.
(xiii) Changes to the wing or to fixed or movable control surfaces which affect
flutter and vibration characteristics.
(2) Powerplant major alterations. The following alterations of a powerplant when
not listed in the engine
specifications issued by the FAA, are powerplant major alterations.
(i) Conversion of an aircraft engine from one approved model to another, involving
any changes in compression
ratio, propeller reduction gear, impeller gear ratios or the substitution of major
engine parts which requires extensive
rework and testing of the engine.
(ii) Changes to the engine by replacing aircraft engine structural parts with
parts not supplied by the original
manufacturer or parts not specifically approved by the Administrator.
(iii) Installation of an accessory which is not approved for the engine.
(iv) Removal of accessories that are listed as required equipment on the aircraft
or engine specification.
(v) Installation of structural parts other than the type of parts approved for the
installation.
(vi) Conversions of any sort for the purpose of using fuel of a rating or grade
other than that listed in the engine
specifications.
(3) Propeller major alterations. The following alterations of a propeller when not
authorized in the propeller
specifications issued by the FAA are propeller major alterations:
(i) Changes in blade design.
(ii) Changes in hub design.
(iii) Changes in the governor or control design.
(iv) Installation of a propeller governor or feathering system.
(v) Installation of propeller de-icing system.
(vi) Installation of parts not approved for the propeller.
(4) Appliance major alterations. Alterations of the basic design not made in
accordance with recommendations of
the appliance manufacturer or in accordance with an FAA Airworthiness Directive
are appliance major alterations. In
addition, changes in the basic design of radio communication and navigation
equipment approved under type
certification or a Technical Standard Order that have an effect on frequency
stability, noise level, sensitivity,
selectivity, distortion, spurious radiation, AVC characteristics, or ability to
meet environmental test conditions and
other changes that have an effect on the performance of the equipment are also
major alterations.
(b) Major repairs--(1) Airframe major repairs. Repairs to the following parts of
an airframe and repairs of the
following types, involving the strengthening, reinforcing, splicing, and
manufacturing of primary structural members or
their replacement, when replacement is by fabrication such as riveting or welding,
are airframe major repairs.
(i) Box beams.
(ii) Monocoque or semimonocoque wings or control surfaces.
(iii) Wing stringers or chord members.
(iv) Spars.
(v) Spar flanges.
(vi) Members of truss-type beams.
(vii) Thin sheet webs of beams.
(viii) Keel and chine members of boat hulls or floats.
(ix) Corrugated sheet compression members which act as flange material of wings or
tail surfaces.
(x) Wing main ribs and compression members.
(xi) Wing or tail surface brace struts.
(xii) Engine mounts.
(xiii) Fuselage longerons.
(xiv) Members of the side truss, horizontal truss, or bulkheads.
(xv) Main seat support braces and brackets.
(xvi) Landing gear brace struts.
(xvii) Axles.
(xviii) Wheels.
(xix) Skis, and ski pedestals.
(xx) Parts of the control system such as control columns, pedals, shafts,
brackets, or horns.
(xxi) Repairs involving the substitution of material.
(xxii) The repair of damaged areas in metal or plywood stressed covering exceeding
six inches in any direction.
(xxiii) The repair of portions of skin sheets by making additional seams.
(xxiv) The splicing of skin sheets.
(xxv) The repair of three or more adjacent wing or control surface ribs or the
leading edge of wings and control
surfaces, between such adjacent ribs.
(xxvi) Repair of fabric covering involving an area greater than that required to
repair two adjacent ribs.
(xxvii) Replacement of fabric on fabric covered parts such as wings, fuselages,
stabilizers, and control surfaces.
(xxviii) Repairing, including rebottoming, of removable or integral fuel tanks and
oil tanks.
(2) Powerplant major repairs. Repairs of the following parts of an engine and
repairs of the following types, are
powerplant major repairs:
(i) Separation or disassembly of a crankcase or crankshaft of a reciprocating
engine equipped with an integral
supercharger.
(ii) Separation or disassembly of a crankcase or crankshaft of a reciprocating
engine equipped with other than
spur-type propeller reduction gearing.
(iii) Special repairs to structural engine parts by welding, plating, metalizing,
or other methods.
(3) Propeller major repairs. Repairs of the following types to a propeller are
propeller major repairs:
(i) Any repairs to, or straightening of steel blades.
(ii) Repairing or machining of steel hubs.
(iii) Shortening of blades.
(iv) Retipping of wood propellers.
(v) Replacement of outer laminations on fixed pitch wood propellers.
(vi) Repairing elongated bolt holes in the hub of fixed pitch wood propellers.
(vii) Inlay work on wood blades.
(viii) Repairs to composition blades.
(ix) Replacement of tip fabric.
(x) Replacement of plastic covering.
(xi) Repair of propeller governors.
(xii) Overhaul of controllable pitch propellers.
(xiii) Repairs to deep dents, cuts, scars, nicks, etc., and straightening of
aluminum blades.
(xiv) The repair or replacement of internal elements of blades.
(4) Appliance major repairs. Repairs of the following types to appliances are
appliance major repairs:
(i) Calibration and repair of instruments.
(ii) Calibration of radio equipment.
(iii) Rewinding the field coil of an electrical accessory.
(iv) Complete disassembly of complex hydraulic power valves.
(v) Overhaul of pressure type carburetors, and pressure type fuel, oil and
hydraulic pumps.
(c) Preventive maintenance. Preventive maintenance is limited to the following
work, provided it does not involve
complex assembly operations:
(1) Removal, installation, and repair of landing gear tires.
(2) Replacing elastic shock absorber cords on landing gear.
(3) Servicing landing gear shock struts by adding oil, air, or both.
(4) Servicing landing gear wheel bearings, such as cleaning and greasing.
(5) Replacing defective safety wiring or cotter keys.
(6) Lubrication not requiring disassembly other than removal of nonstructural
items such as cover plates, cowlings,
and fairings.
(7) Making simple fabric patches not requiring rib stitching or the removal of
structural parts or control surfaces. In the
case of balloons, the making of small fabric repairs to envelopes (as defined in,
and in accordance with, the balloon
manufacturers' instructions) not requiring load tape repair or replacement.
(8) Replenishing hydraulic fluid in the hydraulic reservoir.
(9) Refinishing decorative coating of fuselage, balloon baskets, wings tail group
surfaces (excluding balanced
control surfaces), fairings, cowlings, landing gear, cabin, or cockpit interior
when removal or disassembly of any
primary structure or operating system is not required.
(10) Applying preservative or protective material to components where no
disassembly of any primary structure or
operating system is involved and where such coating is not prohibited or is not
contrary to good practices.
(11) Repairing upholstery and decorative furnishings of the cabin, cockpit, or
balloon basket interior when the
repairing does not require disassembly of any primary structure or operating
system or interfere with an operating
system or affect the primary structure of the aircraft.
(12) Making small simple repairs to fairings, nonstructural cover plates,
cowlings, and small patches and
reinforcements not changing the contour so as to interfere with proper air flow.
(13) Replacing side windows where that work does not interfere with the structure
or any operating system such as
controls, electrical equipment, etc.
(14) Replacing safety belts.
(15) Replacing seats or seat parts with replacement parts approved for the
aircraft, not involving disassembly of any
primary structure or operating system.
(16) Trouble shooting and repairing broken circuits in landing light wiring
circuits.
(17) Replacing bulbs, reflectors, and lenses of position and landing lights.
(18) Replacing wheels and skis where no weight and balance computation is
involved.
(19) Replacing any cowling not requiring removal of the propeller or disconnection
of flight controls.
(20) Replacing or cleaning spark plugs and setting of spark plug gap clearance.
(21) Replacing any hose connection except hydraulic connections.
(22) Replacing prefabricated fuel lines.
(23) Cleaning or replacing fuel and oil strainers or filter elements.
(24) Replacing and servicing batteries.
(25) Cleaning of balloon burner pilot and main nozzles in accordance with the
balloon manufacturer's instructions.
(26) Replacement or adjustment of nonstructural standard fasteners incidental to
operations.
(27) The interchange of balloon baskets and burners on envelopes when the basket
or burner is designated as
interchangeable in the balloon type certificate data and the baskets and burners
are specifically designed for quick
removal and installation.
(28) The installations of anti-misfueling devices to reduce the diameter of fuel
tank filler openings provided the
specific device has been made a part of the aircraft type certificiate data by the
aircraft manufacturer, the aircraft
manufacturer has provided FAA-approved instructions for installation of the
specific device, and installation does not
involve the disassembly of the existing tank filler opening.
(29) Removing, checking, and replacing magnetic chip detectors.
(30) The inspection and maintenance tasks prescribed and specifically identified
as preventive maintenance in a
primary category aircraft type certificate or supplemental type certificate
holder's approved special inspection and
preventive maintenance program when accomplished on a primary category aircraft
provided:
(i) They are performed by the holder of at least a private pilot certificate
issued under part 61 who is the registered
owner (including co- owners) of the affected aircraft and who holds a certificate
of competency for the affected
aircraft (1) issued by a school approved under Sec. 147.21(e) of this chapter; (2)
issued by the holder of the
production certificate for that primary category aircraft that has a special
training program approved under Sec.
21.24 of this subchapter; or (3) issued by another entity that has a course
approved by the Administrator; and
(ii) The inspections and maintenance tasks are performed in accordance with
instructions contained by the special
inspection and preventive maintenance program approved as part of the aircraft's
type design or supplemental type
design.
(31) Removing and replacing self-contained, front instrument panel-mounted
navigation and communication devices
that employ tray-mounted connectors that connect the unit when the unit is
installed into the instrument panel,
(excluding automatic flight control systems, transponders, and microwave frequency
distance measuring equipment
(DME)). The approved unit must be designed to be readily and repeatedly removed
and replaced, and pertinent
instructions must be provided. Prior to the unit's intended use, and operational
check must be performed in
accordance with the applicable sections of part 91 of this chapter.
(32) Updating self-contained, front instrument panel-mounted Air Traffic Control
(ATC) navigational software data
bases (excluding those of automatic flight control systems, transponders, and
microwave frequency distance
measuring equipment (DME)) provided no disassembly of the unit is required and
pertinent instructions are
provided. Prior to the unit's intended use, an operational check must be performed
in accordance with applicable
sections of part 91 of this chapter.

(Secs. 313, 601 through 610, and 1102, Federal Aviation Act of 1958 as amended (49
U.S.C. 1354, 1421 through
1430 and 1502); (49 U.S.C. 106(g) (Revised Pub. L. 97-449, Jan. 21, 1983); and 14
CFR 11.45)

[Doc. No. 1993, 29 FR 5451, Apr. 23, 1964, as amended by Amdt. 43-14, 37 FR 14291,
June 19, 1972; Amdt.
43-23, 47 FR 41086, Sept. 16, 1982; Amdt. 43-24, 49 FR 44602, Nov. 7, 1984; Amdt.
43-25, 51 FR 40703, Nov. 7,
1986; Amdt. 43- 27, 52 FR 17277, May 6, 1987; Amdt. 43-34, 57 FR 41369, Sept. 9,
1992; Amdt. 43-36, 61 FR
19501, May 1, 1996]