Federal Aviation Regulations
Sec. 21.621 — Transferability and duration.
Link to an amendment published at 75 FR 9095, March 1, 2010.Link to an amendment published at 75 FR 9095, March 1, 2010.
A TSO authorization or letter of TSO design approval issued under this part is not transferable and is effective until surrendered, withdrawn, or otherwise terminated by the Administrator.
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