Federal Aviation Regulations
Sec. 23.1192 — Engine accessory compartment diaphragm.
For aircooled radial engines, the engine power section and all portions of the exhaust sytem must be isolated from the engine accessory compartment by a diaphragm that meets the firewall requirements of §23.1191.[Amdt. 23–14, 38 FR 31823, Nov. 19, 1973]
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