| http://www.w3.org/ns/prov#value | - ??91.417 Maintenance records.(a) Except for work performed in accordance with ????91.411 and 91.413, each registered owner or operator shall keep the following records for the periods specified in paragraph (b) of this section: (1) Records of the maintenance, preventive maintenance, and alteration and records of the 100-hour, annual, progressive, and other required or approved inspections, as appr
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