AM.III.E.R3
Risk managementMaintenance on circuits associated with electrically-activated container discharge cartridges (squibs).
From the FAA library
- Chapter 9: Engine Fire Protection Systems › Boeing 777 Fire Extinguisher System › Fire Extinguisher Containers
Four mounting lugs. [Figures 9-23, 9-24, 9-25] The bottles contain Halon fire extinguishing agent pressurized with nitrogen. If the pressure in the bottle becomes too high, the safety relief and fill port opens so that the bottle ... does not explode. The discharge assembly has an explosive squib. An electric current from the fire extinguishing circuit fires the squib. This releases the Halon through the discharge port. The pressure switch gives flight deck indications when bottle pressure decreases…
- Chapter 9: Aircraft Electrical System › Aircraft Electrical Systems › Small Single-Engine Aircraft
This same contactor is activated in the event the GCU detects a fault in the alternator output; however, in this case the contactor would disconnect the alternator from the bus. Figure 9-82. Schematic GCU control of the exciter field ... magnetism. Aircraft Electrical Systems Virtually all aircraft contain some form of an electrical system. The most basic aircraft must produce electricity for operation of the engine’s ignition system. Modern aircraft have complex electrical systems that control almost every aspect…
- Chapter 9: Engine Fire Protection Systems › Fire Extinguisher System Maintenance Practices
discharge valves, testing of discharge tubing for leakage, and electrical wiring continuity tests. The following paragraphs contain details of some of the most typical maintenance procedures. Fire extinguisher containers are checked periodically to determine that the pressure is between ... that provide maximum and minimum gauge readings. If the pressure does not fall within the graph limits, the extinguisher container is replaced. The service life of fire extinguisher discharge cartridges is calculated from the manufacturer’s date stamp, which…