[Code of Federal Regulations]
[Title 14, Volume 1]
[Revised as of January 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 14CFR21.77]

[Page 126]
 
                     TITLE 14--AERONAUTICS AND SPACE
 
CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
 
PART 21--CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS--Table of Contents
 
                Subpart C--Provisional Type Certificates
 
Sec. 21.77  Duration.

    (a) Unless sooner surrendered, superseded, revoked, or otherwise 
terminated, provisional type certificates and amendments thereto are 
effective for the periods specified in this section.
    (b) A Class I provisional type certificate is effective for 24 
months after the date of issue.
    (c) A Class II provisional type certificate is effective for twelve 
months after the date of issue.
    (d) An amendment to a Class I or Class II provisional type 
certificate is effective for the duration of the amended certificate.
    (e) A provisional amendment to a type certificate is effective for 
six months after its approval or until the amendment of the type 
certificate is approved, whichever is first.

[Doc. No. 5085, 29 FR 14566, Oct. 24, 1964 as amended by Amdt. 21-7, 30 
FR 14311, Nov. 16, 1965]