For reciprocating engines, the engine power section and all portions of the exhaust system must be isolated from the engine accessory compartment by a diaphragm that complies with the firewall requirements of § 25.1191.
[Amdt. 25-23, 35 FR 5678, Apr. 8, 1970]
source: Docket No. 5066, 29 FR 18291, Dec. 24, 1964, unless otherwise noted.
cite as: 14 CFR 25.1192