Page 189 - UK Regulation Part 21 Initial Airworthiness Annex I (consolidated) March 2022

PART 21 - INITIAL AIRWORTHINESS (ANNEX I)

product x affecting article y’, but not ‘change to article y’.
21.A.613 Record-keeping
Further to the record-keeping requirements appropriate to or associated with the quality system, all
relevant design information, drawings and test reports, including inspection records for the article
tested, shall be held at the disposal of the CAA and shall be retained in order to provide the information
necessary to ensure the continued airworthiness of the article and of the type-certificated product in
which it is fitted.
21.A.615 Inspection by the CAA
Upon a request of the CAA, each applicant for, or holder of an UKTSO authorisation for an article shall
allow the CAA to:
(a) witness any tests;
(a) witness any tests;
(b) inspect the technical data files on that article.
21.A.619 Duration and continued validity
(a) An UKTSO authorisation shall be issued for an unlimited duration. It shall remain valid
unless:
1. the conditions required when UKTSO authorisation was granted are no longer being
observed; or
2. the obligations of the holder specified in point 21.A.609 are no longer being
discharged; or
3. the article has proved to give rise to unacceptable hazards in service; or
4. the authorisation has been surrendered or revoked under the applicable
administrative procedures established by the CAA.
(b) Upon surrender or revocation, the certificate shall be returned to the CAA.
21.A.621 Transferability
Except for a change in ownership of the holder, which shall be regarded as a change of significance,
and shall therefore comply with points 21.A.147 and 21.A.247 as applicable, an UKTSO authorisation
issued under this Annex I (Part 21) is not transferable.

Section A Subpart P PERMIT TO FLY
Reference Description
21.A.700 GM GM to Subpart P
The process allowing a flight under a permit to fly can be described as follows:
1. Flow-chart 1: overview
2. Flow-chart 2: approval of flight conditions
3. Flow-chart 3: issue of permit to fly
4. Flow-chart 4: changes after first issue of permit to fly

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