| http://www.w3.org/ns/prov#value | - (a) No certificate holder may operate an aircraft, other than a turbojet aircraft, for which two pilots are required by this chapter for operations under VFR, if it has not previously proved such an aircraft in operations under this part in at least 25 hours of proving tests acceptable to the Administrator including??? (1) Five hours of night time, if night flights are to be authorized; (2) Five i
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