ED Decision 2019/018/R
STCs, major changes and major repairs issued by a DOA holder under their privilege of point 21.A.263(c)(5), (8) and (9) should each be given a unique and consecutive reference number.
The following numbering system may be considered:
DOA holder reference |
Type of certificate |
Year of approval |
Dash |
Sequential number |
Issue reference |
21Jxxx |
STC or MCH or MRE |
17 |
— |
001 |
A |
Example: 21J999STC17—001A
Note: ‘MCH’ refers to ‘major changes’, ‘MRE’ to ‘major repairs’.
With reference to STCs only, after the STC approval, the DOA holder should send a copy of the STC to EASA in a timely manner (as agreed with EASA).
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