Section 21.331 - Issuance of export airworthiness approvals for aircraft engines, propellers, and articles(a) A person may obtain from the FAA an export airworthiness approval to export a new aircraft engine, propeller, or article that is manufactured under this part if it conforms to its approved design and is in a condition for safe operation.(b) A new aircraft engine, propeller, or article need not meet a requirement of paragraph (a) of this section if-(1) The importing country or jurisdiction accepts, in a form and manner acceptable to the FAA, a deviation from that requirement; and(2) The export airworthiness approval lists as an exception any difference between the aircraft engine, propeller, or article to be exported and its approved design.(c) A person may obtain from the FAA an export airworthiness approval to export a used aircraft engine, propeller, or article if it conforms to its approved design and is in a condition for safe operation.(d) A used aircraft engine or propeller need not meet a requirement of paragraph (c) of this section if-(1) The importing country or jurisdiction accepts, in a form and manner acceptable to the FAA, a deviation from that requirement; and(2) The export airworthiness approval lists as an exception any difference between the used aircraft engine or propeller to be exported and its approved design.