CS 25J1191 Firewalls

(a)Each APU must be isolated from the rest of the aeroplane by firewalls, shrouds, or equivalent means.

(b)Each firewall and shroud must be:

(1)Fireproof;

(2)Constructed so that no hazardous quantity of air, fluid, or flame can pass from the compartment to other parts of the aeroplane;

(3)Constructed so that each opening is sealed with close fitting fireproof grommets, bushings, or firewall fittings; and

(4)Protected against corrosion.

[Amdt 25/1]