Aviation Mechanic - General, Airframe, and Powerplant › III. Powerplant › Task H. Ignition and Starting Systems

AM.III.H.R1

Risk management

Advanced and retarded ignition timing (piston engine).

Study note

Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

From the FAA library

Aviation Maintenance Technician Handbook - Powerplant p. 4-23
Chapter 4: Engine Ignition & Electrical Systems › Auxiliary Ignition Units › High-Tension Retard Breaker Vibrator
Figure 4-37. High-tension retard breaker magneto and starting vibrator circuit…
Aviation Maintenance Technician Handbook - Powerplant p. 4-43
Chapter 4: Engine Ignition & Electrical Systems › Turbine Engine Ignition Systems
Turbine Engine Ignition Systems Since turbine ignition systems are operated mostly for a brief period during the engine-starting cycle, they are, as a rule, more trouble-free than the typical reciprocating engine ignition system. The turbine engine ignition system ... does not need to be timed to spark during an exact point in the operational cycle. It is used to ignite the fuel in the combustor and then it is switched off. Other modes of turbine ignition system operation, such…