Interagency Single Engine Air Tanker Operations Guide - National ...

INTERAGENCY SINGLE ENGINE AIR TANKER OPERATIONS GUIDE
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Exposure: Property that may be endangered by a fire in another structure or by
a wildfire.
Extend: To drop retardant in such a way that the load slightly overlaps and
lengthens a previous drop, e.g., “Extend the last drop.”
Extra-period fire: A fire not controlled by 10 a.m. of the day following
discovery.
- F -
False alarm: A reported smoke or fire requiring no suppression; e.g., brush
burning under control, mill smoke, false smoke, etc.
FAR Part 23: See CAR parts 3 and 8.
Final (flight pattern): A flight path in the direction of a landing or drop (short
for final approach).
Fire behavior: The manner in which a fire reacts to the variables of fuel,
weather and topography.
Fire cooperator: A fire-trained local person or agency who has agreed in
advance to perform specified fire control services.
Fire danger: Resultant of both constant and variable fire danger factors which
affect ignition spread, difficulty of control of fires and the damage they cause.
Fire danger rating: A fire management system that integrates the effects of
selected fire danger factors into one or more qualitative or numerical indices of
current protection needs.
Fire effects: The physical, biological and ecological impact of fire on the
environment.
Fire Traffic Area (FTA): The FTA was developed by aerial firefighting
personnel to provide a standardized initial attack airspace structure to enhance
safety, and air traffic separation over wildland fire incidents.
Fine fuel moisture: The probable moisture content of fast-drying fuels which
have a time lag constant of one hour or less, i.e., grass, leaves and small twigs.
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