–ICAO Annex 6, Part I (Eleventh Edition, July 2018 – incorporating Amendments 1 to 43),
Appendix 8, Section 1 (General requirements) and Section 7 (Inspections of flight recorder
systems);
— ICAO Annex 6, Part III (Ninth Edition, July 2018– incorporating Amendments 1 to 22), Appendix
4, Section 1 (General requirements) and Section 6 (Inspections of flight recorder systems);
— EUROCAE Document ED-93 (dated November 1998), ‘Minimum aviation system performance
specification for CNS/ATM message recording systems’;
— EUROCAE Document ED-112A (dated September 2013), ‘Minimum operational specification
for crash protected airborne recorder systems’.

The purpose of this Certification Memorandum is to provide guidance to be considered by applicants for TC,
changes to TC, STC, repair or ETSOA intending to apply the use of real-time remote technologies for the
witnessing of inspections and tests addressed in point 21.A.33 of Annex I to Regulation (EU) 748/2012.
In particular, it addresses the cases where EASA witnesses remotely in real-time an inspection or test as part
of its involvement determined in accordance with point 21.B.100. The guidelines for these cases are defined
in paragraph 4.
Some considerations are provided in paragraph 5 for cases where applicants carry out or witness remotely
inspections or tests, which take place in a facility where it is a too huge burden, not necessary or not possible
to physically attend. As an example, this scenario can occur in the framework of the activities defined in point
21.A.239 (b).
This certification memorandum does not provide guidance for flight test activities conducted in accordance
with point 21.A.35.
NOTE: This Certification Memorandum does not apply to means such as video, audio or other
information generally used to support project certification data when it is difficult to observe the
results of certain tests, such as high-intensity radiated field tests, in-flight icing tests, or water
ingestion tests.