FAA Advisory Circular 43.13-1B
Acceptable Methods, Techniques, and Practices
Aircraft Inspection and Repair
AC 43.13-1B | 11. Aircraft Electrical Systems | 20. Electrical and Electronic Symbols | 11-272. Symbols
9/8/98
AC 43.13-1B
SECTION 20. ELECTRICAL AND ELECTRONIC SYMBOLS
11-271. GENERAL. The electrical and
electronic symbols shown here are those that
are likely to be encountered by the aviation
maintenance technician. They are in accor-
dance with ANSI-Y32.2-1975.
11-272. SYMBOLS. Only those symbols
associated with aircraft electrical and elec-
tronic wiring have been listed in general. Re-
fer to ANSI-Y32.2-1975 for more specific
detail on each symbol.
TABLE 11-27. Electronic/Electrical Symbols.
Symbol
Meaning
Adjustability Variability
Radiation Indicators
Physical State Recognition
Test-Point Recognition
Polarity Markings
Direction of Flow of Power, Signal, or
Information
Kind of Current
Envelope Enclosure
Shield Shielding
Special Connector or Cable Indicator
Par 11-271
Page 11-105