In the low-voltage system, the spark is like the high-voltage system, but it has a
self-ionizing igniter plug.
A6-16. The accessory section of the gas turbine engine is usually mounted beneath the
A6-17. The Brayton cycle is a process that begins with certain conditions and ends with
those same conditions.
A6-18. ANA Bulletin No. 306M designation system and MIL-STD-1812 designation sys-
A6-19. A special designation, such as experimental or restricted service.
A6-20. The type indicator, the manufacturer's indicator, and the model indicator.
A6-21. MIL-STD-1812 system.
A6-22. Before any maintenance turnups are conducted, personnel MUST install protective
screens for all ducts.
A6-23. The two most serious hazards that you face when working around engine exhausts
are high temperatures and high velocity of gases exiting tailpipes.
A6-24. When you work around jet engines, you should always wear protectors to avoid
A7-1. The generator and the battery.
A7-2. The generator.
A7-3. Acid burns and explosions.
A7-4. Internal shorting or thermal runaway.
A7-5. Flush the area with large quantities of fresh water and seek medical attention im-
A7-6. Flush the affected area with large quantities of fresh water. Neutralize with vinegar
or a 5-percent solution of acetic acid, and seek medical attention immediately.
A7-7. Ac generators or alternators.
A7-8. An ac electrical system.
A7-9. These power units furnish electrical power when engine-driven generators are not
operating or when external power is not available.
A7-10. The altimeter, the airspeed and Mach number indicator, and the rate-of-climb in-
A7-11. It displays the correct altitude of the aircraft.
A7-12. Its speed compared to the speed of sound in the surrounding medium (local speed).
A7-13. The relative position of the aircraft compared to the earth's horizon.
A7-14. It shows the correct execution of a turn and bank as well as the lateral attitude of
the aircraft in straight flight.
A7-15. The magnetic (standby) compass, the gyro compass, and the horizontal situation
A7-16. The transmission of intelligible coded radio-frequency waves as Morse Code.