OBS_VALUE: Dry lease is possible if the aircraft is registered in a party to the  ICAO Convention  provided that: (i) it carries an appropriate airworthiness certificate issued by the country of registration; (ii) it is of a type design which is approved under a US type certificate; (iii) it  is operated by US-certificated airmen employed by the certificate holder; and, (iv) the certificate holder files a copy of the aircraft lease or charter agreement with the FAA. 