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Installation in aircraft hangars.

Municipal Code of Chicago § 18-28-920.4.6
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18-28-920.4.6 Installation in aircraft hangars. Heaters in aircraft hangars shall be installed in accordance with NFPA 409, Standard on Aircraft Hangars.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2688445Fetched: 10/24/2026

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