During the soldering procedure, use a protective shield.

It is under the tilte "Towing and Taxiing" that the instructions necessary to tow and taxi the aircraft in any of the probable conditions to which it may be subjected.

"Electrical Power" describes those electrical units and components which generate, control and supply AC and/or DC electrical power for other systems, including generators and relays, inverters, batteries, etc. , through the busses.

The AC electrical power distribution on board is carried out in several steps: from the different sources towards the main AC busbars; then, from the main AC busbars, either directly towards important consumers (pumps, galleys...), or towards the associat

AC GENERATION includes items such as inverters, AC generators, control and regulating components, indicating systems, etc., all wiring to but not including main buses, as applicable.

Electrical Power system is about units and components which generate, control and supply AC and/or DC electrical power for other systems, including generators and relays, inverters, batteries, etc.

Audio Integrating controls the output of communications and navigation receivers into the flight crew headphones and speakers, and the output of the flight crew microphones into the communications transmitters.

Speech communication utilizes voice modulated electro-magnetic waves to transmit and/or receive messages from air-to-air or air-to-ground installations.

Environment control system is composed of those units and components which furnish a means of pressurizing, heating, cooling, moisture controlling, filtering and treating the air used to ventilate the areas of the fuselage within the pressure seals.

"Unscheduled Servicing" includes instructions such as those for ice and snow removal from parked aircraft, preoiling of radial engines after extended shutdown, etc.

"Scheduled Servicing" includes internal cleaning, etc. Shall not include lubrication procedures required for the accomplishment of maintenance practices.