FAR/AIM
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Federal Aviation Regulations
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PART 135—OPERATING REQUIREMENTS: COMMUTER AND ON DEMAND OPERATIONS AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT
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Subpart B—Flight Operations
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§ 135.64 – Retention of contracts and amendments: Commercial operators who conduct intrastate operations for compensation or hire.
§ 135.64 – Retention of contracts and amendments: Commercial operators who conduct intrastate operations for compensation or hire.
Each commercial operator who conducts intrastate operations for compensation or hire shall keep a copy of each written contract under which it provides services as a commercial operator for a period of at least one year after the date of execution of the contract. In the case of an oral contract, it shall keep a memorandum stating its elements, and of any amendments to it, for a period of at least one year after the execution of that contract or change.