Page 134 - UK Regulation Part 21 Initial Airworthiness Annex I (consolidated) March 2022

PART 21 - INITIAL AIRWORTHINESS (ANNEX I)

be given in block 12 or in a separate document cross-referenced from block 12.
CAA Form 1 Block 12 ‘Remarks’
Examples of conditions which would necessitate statements in Block 12 are:
- When the certificate is used for prototype purposes the following statement must be
entered at the beginning of block 12:
‘NOT ELIGIBLE FOR INSTALLATION ON INSERVICE TYPECERTIFICATED AIRCRAFT’.
- Recertification of items from ‘prototype’ (conformity only to nonapproved data) to ‘new’
(conformity to approved data and in a condition for safe operation) once the applicable
design data is approved.
The following statement must be entered in block 12:
RECERTIFICATION OF ITEMS FROM ‘PROTOTYPE’ TO ‘NEW’:
THIS DOCUMENT CERTIFIES THE APPROVAL OF THE DESIGN DATA [insert TC/STC
number, revision level], DATED [insert date if necessary for identification of revision
status], TO WHICH THIS ITEM (THESE ITEMS) WAS (WERE) MANUFACTURED.
- When a new certificate is issued to correct error(s) the following statement must be
entered in block 12:
‘THIS CERTIFICATE CORRECTS THE ERROR(S) IN BLOCK(S) [enter block(s)
corrected] OF THE CERTIFICATE [enter original tracking number] DATED [enter original
issuance date] AND DOES NOT COVER CONFORMITY/ CONDITION/RELEASE TO
SERVICE’.
Examples of data to be entered in this block as appropriate:
- For complete engines, a statement of compliance with the applicable emissions
requirements current on the date of manufacture of the engine.
- For UKTSO articles, state the applicable UKTSO number.
- Modification standard.
- Compliance or noncompliance with airworthiness directives or service bulletins.
- Details of repair work carried out, or reference to a document where this is stated.
- Shelflife data, manufacture date, cure date, etc.
- Information needed to support shipment with shortages or reassembly after delivery.
- References to aid traceability, such as batch numbers.
- In the case of an engine, if the CAA has granted an engine exhaust emissions production
cutoff exemption, the record: ‘[New or Spare] engine exempted from NOx emissions
production cutoff requirements’.
21.A.163(d) AMC Privileges – Maintenance
The applicant may apply for terms of approval, which cover maintenance of a new aircraft that it has
manufactured, as necessary to keep it in an airworthy condition, but not beyond the point at which the
applicable operational rules require maintenance to be performed by an approved maintenance
organisation. If the production organisation intends to maintain the aircraft beyond that point, it would
have to apply for and obtain an appropriate maintenance approval.
When the CAA is satisfied that the procedures required by 21.A.139 are satisfactory to control
maintenance activities so as to ensure that the aircraft is airworthy, this capability will be stated in the
terms of approval.
MAINTENANCE OF AIRCRAFT
Examples of such maintenance activities are:
- Preservation, periodic inspection visits, etc.
- Embodiment of a Service Bulletin.
- Application of airworthiness directives.
- Repairs.
- Maintenance tasks resulting from special flights.
- Maintenance tasks to maintain airworthiness during flight training, demo flights and other
non revenue flights.
Any maintenance activities must be recorded in the Aircraft Log Book. It must be signed
by certifying staff for attesting the conformity of the work to the applicable airworthiness
data.
In some cases the Aircraft Log Book is not available, or the production organisation prefers to use a
separate form (for instance for a large work package or for delivery of the aircraft to the customer). In
these cases, production organisations must use CAA Form 53 which must subsequently become
part of the aircraft maintenance records.
MAINTENANCE OF COMPONENTS OUTSIDE THE POA CAPABILITY
Such maintenance activity outside the capability of the Aircraft POA holder may still be accomplished
under the production approval of the original release organisation. In such circumstances the
engine(s), propeller(s), parts and appliances will require re-release in accordance with GM
21.A.163(c) (CAA Form 1).
Records relevant to continued airworthiness or retirement lives, such as engine runs, flight hours,
landings, etc., which affect part retirement of maintenance schedules must be specified on any re-
release.
As an alternative the engine, propeller, part or appliance may be maintained by the holder of an
approval in accordance with Part 145, classified and released as ‘used’.
21.A.163(e) AMC Procedure for the issue of a permit to fly including approval of the flight conditions
1. INTENT
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