Sofema Aviation Services (SAS) www.sassofia.com considers aspects of Operational Suitability Data (OSD) as related to Certification Specification – SIM Data (CS-SIMD).
Introduction
EASA published a new certification standard called Certification Specification Simulator Data CS- SIMD providing regulatory guidance for the evaluation of data used for simulator certification. CS-SIMD ensures the provision of data which is used to validate by objective comparison simulators used for type rating represents the type of aircraft.
Most of the elements of CS SIMD were already part of CS FSTD to be applied for the evaluation of Flight Simulation Training Devices (FSTD).
CS SIMD has been developed to provide for a clear focus on responsibility for the OEMs ( The voluntary OEB process, becomes a mandatory OSD process). It ensures the provision of all necessary source data required for validation (sim vs. a/c) before the EIS of the aircraft
With CS SIMD the provision of source data will be done in conformity with an authority-approved ‘definition of the scope of validation source data.
Subpart A — General – CS SIMD.100 Scope (ED Decision 2014/033/R)
These Certification Specifications contain the specifications for the definition of the scope of:
- Validation source data to support the objective qualification of aeroplane full flight simulators associated with the pilot type rating training, or provisional validation source data to support their interim qualification, including additional features as requested by the applicant;
- Validation source data to support the objective qualification of helicopter full flight simulators and flight training devices associated with the pilot type rating training, or provisional validation source data to support their interim qualification, including additional features as requested by the applicant.
Subpart B — Determination of Scope of Validation Source Data (ED Decision 2014/033/R)
The determination of the scope of the validation source data is based on:
- Certification specifications extracted from CS-FSTD(A)&(H) as applicable;
- Any additional specification resulting from the additional features selected by the applicant.
- The scope comprises the list of validation source data used as validation data in the qualification test guide, its related source and relevant justifications or rationales
Flight Test Program
The flight test program is typically defined by the simulator certification standard.
- The EASA standards are CSFSTD(A) [2] for aircraft and
- CS-FSTD(H) [1] for helicopter.
Derived from both the FAA & ICAO standard (The tests are similar to performance and handling quality tests, as they are done during aircraft certification flight testing.)
Conclusions to the flight tests needed are drawn from the list of simulator test cases.
The flight model development requires a wide range of different test point throughout the flight envelope. Some test cases for complex and non-linear aircraft behaviour are conducted in much more variations than those given by the standard.
One example is the hover test case. The Helicopter EASA standard asks for a minimum of four different hover heights, however typically a minimum of ten are needed as input for the model development.
Independent evaluation of flight test campaign
The suitability of the flight test data for simulator qualification is evaluated by an independent organisation:
- Validation of flight test plan and compliance to the certification standard.
- Assessment, Validation and Conformity of Processes, Tools & Hardware
Next Steps
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Sofema Aviation Services (SAS) www.sassofia.com provides regulatory training for EASA Part 21, CS 25 & OSD – please see the following course. For additional details, please visit our websites or email team@sassofia.com
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aviation, Certification Specification, CS-FSTD(H), CS-SIMD, EASA, easa part 21, ED Decision 2014/033/R, FAA, Flight Simulation Training Device, FSTD, ICAO, Operational Suitability Data (OSD), OSD, Part 21, SAS blogs
