Sec. 23.863 - Flammable fluid fire protection.
(a) In each area where flammable fluids
or vapors might escape by leakage of a fluid system, there must be means
to minimize the probability of ignition of the fluids and vapors, and the
resultant hazard if ignition does occur.
(b) Compliance with paragraph (a) of
this section must be shown by analysis or tests, and the following factors
must be considered:
(1) Possible sources and paths of fluid
leakage, and means of detecting leakage.
(2) Flammability characteristics of
fluids, including effects of any combustible or absorbing materials.
(3) Possible ignition sources, including
electrical faults, overheating of equipment, and malfunctioning of
(4) Means available for controlling or
extinguishing a fire, such as stopping flow of fluids, shutting down
equipment, fireproof containment, or use of extinguishing agents.
(5) Ability of airplane components that
are critical to safety of flight to withstand fire and heat.
(c) If action by the flight crew is
required to prevent or counteract a fluid fire (e.g. equipment shutdown or
actuation of a fire extinguisher), quick acting means must be provided to
alert the crew.
(d) Each area where flammable fluids or
vapors might escape by leakage of a fluid system must be identified and
[Amdt. 23-23, 43 FR 50593, Oct. 30, 1978]