| Home | Privacy | Contact |

Pilot's Handbook of Aeronautical Knowledge
Flight Manuals and Other Documents

Preventive Maintenance

| First | Previous | Next | Last |

Pilot's Handbook of Aeronautical Knowledge



Table of Contents

Chapter 1, Introduction To Flying
Chapter 2, Aircraft Structure
Chapter 3, Principles of Flight
Chapter 4, Aerodynamics of Flight
Chapter 5, Flight Controls
Chapter 6, Aircraft Systems
Chapter 7, Flight Instruments
Chapter 8, Flight Manuals and Other Documents
Chapter 9, Weight and Balance
Chapter 10, Aircraft Performance
Chapter 11, Weather Theory
Chapter 12, Aviation Weather Services
Chapter 13, Airport Operation
Chapter 14, Airspace
Chapter 15, Navigation
Chapter 16, Aeromedical Factors
Chapter 17, Aeronautical Decision Making




Preventive Maintenance

Preventive maintenance is considered to be simple or minor
preservation operations and the replacement of small standard
parts, not involving complex assembly operations. Allowed
items of preventative maintenance are listed and limited to
the items of 14 CFR part 43, appendix A(c).

Maintenance Entries
All pilots who maintain or perform preventive maintenance
must make an entry in the maintenance record of the aircraft.
The entry must include:
1. A description of the work, such as "changed oil (Shell
Aero-50) at 2,345 hours."
2. The date of completion of the work performed.
3. The entry of the pilot's name, signature, certificate
number, and type of certificate held.

Examples of Preventive Maintenance
The following examples of preventive maintenance are taken
from 14 CFR Part 43, Maintenance, Preventive Maintenance,
Rebuilding, and Alternation, which should be consulted for
a more in-depth look at preventive maintenance a pilot can
perform on an aircraft. Remember, preventive maintenance
is limited to work that does not involve complex assembly
operations and includes:

• Removal, installation, and repair of landing gear
tires and shock cords; servicing landing gear shock
struts by adding oil, air, or both; servicing gear wheel
bearings; replacing defective safety wiring or cotter
keys; lubrication not requiring disassembly other than
removal of nonstructural items such as cover plates,
cowlings, and fairings; 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
manufacturer's instructions) not requiring load tape
repair or replacement.

• Replenishing hydraulic fluid in the hydraulic reservoir;
refinishing decorative coating of fuselage, balloon
baskets, wings, tail group surfaces (excluding balanced
control surfaces), fairings, cowlings, landing gear, cabin,
or flight deck interior when removal or disassembly
of any primary structure or operating system is not
required; 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; repairing upholstery and decorative
furnishings of the cabin, flight deck, or balloon basket
interior when the repair 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; making small, simple repairs
to fairings, nonstructural cover plates, cowlings, and
small patches and reinforcements not changing the
contour to interfere with proper air .ow; replacing
side windows where that work does not interfere with
the structure or any operating system such as controls,
electrical equipment, etc.

• Replacing safety belts, seats or seat parts with
replacement parts approved for the aircraft, not
involving disassembly of any primary structure or
operating system, bulbs, reflectors, and lenses of
position and landing lights.

• Replacing wheels and skis where no weight-and balance
computation is involved; replacing any
cowling not requiring removal of the propeller or
disconnection of flight controls; replacing or cleaning
spark plugs and setting of spark plug gap clearance;
replacing any hose connection, except hydraulic
connections; however, prefabricated fuel lines may
be replaced.

• Cleaning or replacing fuel and oil strainers or filter
elements; servicing batteries, cleaning of balloon
burner pilot and main nozzles in accordance with the
balloon manufacturer's instructions.

• 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; adjustment
of nonstructural standard fasteners incidental to

• The installations of anti-misfueling devices to reduce
the diameter of fuel tank filler openings only if the
specific device has been made a part of the aircraft type
certificate 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; troubleshooting and repairing broken
circuits in landing light wiring circuits.

• Removing and replacing self-contained, front instrument
panel-mounted navigation and communication devices
employing 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.