14 CFR 33.37

§ 33.37 Ignition system.

United States · 14 CFR — Aeronautics and Space · Status: effective

Cite this

Citation: 14 CFR 33.37, § 33.37 Ignition system, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/55064
Permanent ID: ys:prov:55064@1
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Full text

Each spark ignition engine must have a dual ignition system with at least two spark plugs for each cylinder and two separate electric circuits with separate sources of electrical energy, or have an ignition system of equivalent in-flight reliability.

Legislative history

This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.