25B. Housing of aircraft- (1) No aircraft containing dangerous petroleum in bulk in any of its tanks may be housed in a hanger unless such hangar is constructed of uninflammable material and is effectively and safely ventilated to the open air.
(2) Every such hangar shall be in charge of a competent person who shall be responsible for taking all proper precautions against fire and shall prevent unauthorized persons from having access to the building.
[Inserted by Notification No. 1-A/15-39, dated 7-12-1939)
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