Diamond DA 42 NG, Maintenance Manual

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AIRCRAFT
DA 42 NG AMM Standard Practices
Doc # 7.02.15
Rev. 4
20-30-00
Page 1
15 Mar 2018
Section 20-30
Standard Practices - Electrical
1. General
This Section gives you the standard practices for the electrical system. Modern airplanes reliability
depends on proper function of the electric and electronic systems to a greater extent than previous
certified airplanes. Maintenance carried out must be of good workmanship strictly considering the
guidelines of AC 43-13.1B. Any time you work on the engine harness refer to AE Maintenance Manual,
Doc. No. E4.08.04, latest revision.
The satisfactory performance of a modern airplane, like the DA 42 NG, depends to a great extent, on
reliability of its electrical systems. Improperly or carelessly maintained wiring can be a source of
potential danger, and many malfunctions and failures of an electrical system can be traced to this
cause. The continued proper performance of the electrical systems depends on the knowledge of the
personal who do the inspection and repair.
It is therefore important that maintenance is carried out in accordance with the best available
techniques and properly trained maintenance personal, in order to eliminate possible failures.
2. Thread Locking
Many electrical terminals are locked with electrical varnish or lacquer. If you release a terminal that has
been thread locked with lacquer or varnish then use Loctite 222 or equivalent to lock the thread when
you re-assemble the terminal.
3. Repair and Maintenance
Repair and maintenance of the electrical system wiring, not covered in a separate document (e.g.
Service Bulletin, Work Instruction) is limited to the extent of:
)
Replacement of wires and cables.
)
Replacement of ring terminals.