Maintenance Program
--Immediate
--Leaks
--Wet brake calipers
--Baffles
--Tire pressure
--Get fixed whatever needs fixing

--Post-flight
--Exhaust pipe check
--Magneto check
--Gear and tires

--Pre-annual
--Fuel Selector
--Heater
--Control linkages
--Corrosion

--Occasionally
--Oil change
--Under cowl check
--Lights
--annunciators
--Avionics currency

--Constant
--ADs
--Anticipation of parts needed
--Unusual event in operation
--In aircraft spares, lights, drains,
--IRAN items for mechanic (Inspect and Replace As Necessary)
--Anticipation of failure beats waiting for failures

Owner-Mechanic Relations
--Be interested
--Be accessible
--Bring money
--Accept advice
--Owner hands-off except for Part 43 list.
--Use only approved materials and parts
--Pay the price for the best.
--Log all work properly
--Proper operation is a preventative maintenance measure.
--Most wear occurs just getting started.
--Cold is hard on aircraft.
--Plan your route for best survival options.

Owner Produced Parts
--Only option for older aircraft.
--Owners are allowed to make parts but they cannot install unless an A&P
--A&P must certify the quality of the part.
--Five limitations:
--Aircraft owners are the only ones allowed to produce new parts.
--Participation in the manufacture is required of the owner in one of five possible ways.
--Part cannot be installed unless it meets all four of new part characteristics.
--Determine where a repair becomes a new part may require an FAA FSDO opinion.
--Final decision and responsibility rests with mechanic.
---A & P can make a repair or install but not MAKE a part.
--The 'test of reasonableness' may determine what makes a 'repair'.
--Published and available material specifications exist.
--Part is simple and fabrication uses tools and standard industry procedures.
--Templates for design are available.
--Parts and repair is in accordance with manufacturer's instructions.

Part must have characteristics of an approved part:
--Part must be an FAA approved design:
--Drawings, specifications, design, and configuration are defined.
--Strength is defined by materials, dimensions and processes.
--Given airworthiness limits and instructions to maintain airworthiness.
--Data needed to determine airworthiness of later same type products.
--Part must conform to design
--Has all structure needed for the design
--Conforms by materials and specifications
--Conforms to drawings
--Identical manufacturing, construction, and assembly.
--Part has documented production and FAA approval
--Part must be maintained under FAR Part 43

FAR 21.303(b) 2 lets owner make part to maintain or alter his aircraft part. The Owner Produced Part must be installed by on the owned aircraft and cannot be made for sale.
Ways a New Part Can Be Made:
--Parts Manufacturer Approval
--Technical Standard Order
--Type Certificate or Supplemental Type Certificate
--Type Certificate with Approved Production Inspection System
--Production Certificate
--Bilateral Agreement
--Any method acceptable to the Administrator
--Standard Parts
--Owner Produced Parts
--Parts per Supplemental Type Certificate instructions as part of Supplemental Type Certificate modification
--Fabricated by qualified person as repair to return Type Certificate part to service but not for sale. Part 43

Common Maintenance-Related Causes of Errors.
Major Cause--Lack of Communication between people.
1) Complacency
3) Lack of Knowledge
4) Distraction
5) Lack of Teamwork
6) Fatigue
7) Lack of Resources
8) Pressure
9) Lack of Assertiveness
10) Stress
11) Lack of Awareness.
12) Norms

Corrosion
--Destruction of metal by electrochemical reaction is called corrosion
--Water is the electrolyte with metals such as magnesium, steel and aluminum making either the anode or cathode.
--For more:

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