Certification Memoranda

EASA Certification Memoranda (CM) clarify the Agency’s general course of action on specific certification items. They are intended to provide guidance on a particular subject and, as non-binding material, may provide complementary information and guidance for compliance demonstration with current standards. Certification Memoranda are provided for information purposes only and must not be misconstrued as formally adopted Acceptable Means of Compliance (AMC) or Guidance Material (GM). Certification Memoranda are not intended to introduce new certification requirements or to modify existing certification requirements and do not constitute any legal obligation.

The hereby presented Certification Memoranda have been accepted by the Agency following a public consultation.

CM Subject Issue Revision Date Supporting docs
EASA CM-AS-002 Clarifications to AMC 20-27 02 00 28/03/2014

Issue 2 accounts for the following changes:

  • Section 1.2: Revised reference to NPA 2009-04 to a reference to AMC 20-28
  • Section 7.5: Deleted. The guidance on operational approvals is now provided in SIB 2014-04, published 07 February 2014
EASA CM-PIFS-004 Rotorcraft – Oil Low Pressure Warning 01 00 06/02/2014 EASA Proposed CM-PIFS-004
CRD EASA Proposed CM-PIFS-004
EASA CM-S-002 Application of CS 25.561 (c)(2) 1·33 ‘Wear and Tear’ Factor - Frequent Removal of Interior Structures 01 00 14/01/2014 EASA Proposed CM-S-002
CRD EASA Proposed CM-S-002
EASA CM-S-004 Composite Materials - Shared Databases - Acceptance of Composite Specifications and Design Values Developed using the NCAMP Process 01 00 14/01/2014 EASA Proposed CM-S-004
CRD EASA Proposed CM-S-004
EASA CM-RTS-001 Large Helicopter Main Gearbox Certification Requirements 01 00 11/11/2013 EASA Proposed CM-RTS-001
CRD EASA Proposed CM-RTS-001
EASA CM-CS-004 Flammability Testing of Interior Materials 01 00 16/10/2013 EASA Proposed CM-CS-004
CRD EASA Proposed CM-CS-004
EASA CM-21.A-K-001 Installation of new parts and appliances without an EASA Form 1 in European Light Aircraft 01 00 21/06/2013

EASA Proposed CM-21.A-K-001
CRD EASA Proposed CM-21.A-K-001

EASA CM-21.A-J-001 Service Bulletins (SBs) related to Airworthiness Directives (ADs) 01 00 21/06/2013

EASA Proposed CM-21.A-J-001
CRD EASA Proposed CM-21.A-J-001

EASA CM-PIFS-008 Regulatory Differences CS-E vs CFR 14 Part 33 (for validation by EASA of FAA certified engine types) 01 00 28/02/2013 EASA Proposed CM-PIFS-008
CRD EASA Proposed CM-PIFS-008
EASA CM-PIFS-009 Fuel Specification Changes 01 00 28/02/2013 EASA Proposed CM-PIFS-009
CRD EASA Proposed CM-PIFS-009
EASA CM-PIFS-007 Engine Critical Parts - Damage Tolerance Assessment - Manufacturing and Surface Induced Anomalies 01 00 22/02/2013 EASA Proposed CM-PIFS-007
CRD EASA Proposed CM-PIFS-007
EASA CM-ES-002 Electrical Wiring Interconnection System Instructions for Continued Airworthiness 01 00 11/01/2013 EASA Proposed CM-ES-002
CRD EASA Proposed CM-ES-002
EASA CM-CS-003 Installation of 'Cargo Seat Bags' on Passenger Seats 01 00 14/11/2012 EASA Proposed CM-CS-003
CRD EASA Proposed CM-CS-003
EASA CM-AS-002 Clarifications to AMC 20-27 01 01 25/10//2012 Note:
Correction of:
  1. Reference to ICAO PANS-OPS in section 7.3. § 2:
    • the document is 8168 (not 8186),
    • the volume reference is Volume II (not III).
  2. p.15 § 1:
    "As can be seen from the table, nominal obstacle clearance margin is already slightly exceeded, above 10.000 feet, …" (not 5.000 feet)
EASA CM-AS-002 Clarifications to AMC 20-27 01 00 06/08/2012 EASA Proposed CM-AS-002
CRD EASA Proposed CM-AS-002
EASA CM-PIFS-006 Guidance for Rain and Hail Ingestion Testing for Turbine Engines – Short Hail Burst 01 00 02/08/2012

EASA Proposed CM-PIFS-006
CRD EASA Proposed CM-PIFS-006

EASA CM-PIFS-005 Guidance for Rain and Hail Ingestion Testing for Turbine Engines – Ice Accretion 01 00 31/07/2012

EASA Proposed CM-PIFS-005
CRD EASA Proposed CM-PIFS-005

EASA CM-PIFS-003 Turbine Over-speed Resulting from Shaft Failure 01 00 31/07/2012

EASA Proposed CM-PIFS-003
CRD EASA Proposed CM-PIFS-003

EASA CM-AS-001 Quality of Recording of Cockpit Voice Recorders 01 00 12/06/2012

EASA Proposed CM-AS-001
CRD EASA Proposed CM-AS-001

EASA CM-ES-001 Certification of Power Supply Systems for Portable Electronic Devices 01 00 07/06/2012 EASA Proposed CM-ES-001
CRD EASA Proposed CM-ES-001
EASA CM-S-001 Compliance with CS-25 Bird Strike Requirements 01 00 11/04/2012 EASA Proposed CM-S-001
CRD EASA Proposed CM-S-001
EASA CM-PIFS-002 Approval of Engine Use with a Thrust Reverser 01 00 08/03/2012 EASA Proposed CM-PIFS-002
CRD EASA Proposed CM-PIFS-002
EASA CM-PIFS-001 Large transport aircraft: Fire withstanding capabilities of composite wing containing fuel tank 01 00 19/12/2011 EASA Proposed CM-PIFS-001
CRD EASA Proposed CM-PIFS-001
EASA CM-CS-001 Use of Aircraft Materials Fire Test Handbook  # DOT/FAA/AR-00/12 01 00 07/09/2011 EASA Proposed CM-CS-001
CRD EASA Proposed CM-CS-001
EASA CM-CS-002 Access to and Opening of Type III and IV Exits on Aeroplanes with Passenger Seating Capacities of 19 or Fewer 01 00 19/09/2011 EASA Proposed CM-CS-002
CRD EASA Proposed CM-CS-002
EASA CM-HS-001 Respecting Brake Energy Qualification Limits 01 00 24/08/2010 EASA proposed CM-HS-001
CRD EASA Proposed CM-HS-001
EASA CM-SWCEH-002 Software Aspects of Certification 01 01 09/03/2012

Editorial corrections only.

Note: The Agency is currently drafting a second issue of this Certification Memorandum that will apply to projects conducted in accordance with ED-12C / DO-178C. EASA will conduct a full public consultation on the proposed changes prior to the publication of Issue 2 of this Certification Memorandum on Software Aspects of Certification.

EASA CM-SWCEH-002 Software Aspects of Certification 01 00 11/08/2011 EASA Proposed CM-SWCEH-002
CRD EASA Proposed CM-SWCEH-002
EASA CM-SWCEH-001 Development Assurance of Airborne Electronic Hardware 01 01 09/03/2012

Editorial corrections only.

Note: This Certification Memorandum may later be re-issued to address additional topics, in which case a full public consultation will be held regarding the changes prior to publication.

EASA CM-SWCEH-001 Development Assurance of Airborne Electronic Hardware 01 00 11/08/2011 EASA Proposed CM-SWCEH-001
CRD EASA Proposed CM-SWCEH-001