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e-CFR data is current as of January 14, 2021 |
Title 14 → Chapter I → Subchapter C → Part 21 → Subpart I → §21.217 |
Title 14: Aeronautics and Space
PART 21—CERTIFICATION PROCEDURES FOR PRODUCTS AND ARTICLES
Subpart I—Provisional Airworthiness Certificates
§21.217 Duration.
Unless sooner surrendered, superseded, revoked, or otherwise terminated, provisional airworthiness certificates are effective for the duration of the corresponding provisional type certificate, amendment to a provisional type certificate, or provisional amendment to the type certificate.