Navigate / EASA

GM1 SIMD.120 Terminology

ED Decision 2014/033/R

The diagram below describes the flow of data from the validation source data (VSD) to the master qualification test guide (MQTG) of the FSTD. It illustrates the importance of the VSD. The definition of scope of the VSD builds the ‘validation data roadmap (VDR)’:

The origin and the content of the VSD include, but are not limited to:

—         ground test data,

—         flight test data,

—         engineering simulator data, and

—         rationales and justifications.

They should ensure that all the initial and test conditions as described in CS-FSTD(A) or (H) are met (e.g. weights, center of gravity (CG), flap settings) and the required information (e.g. the limiting conditions weight, altitude or temperature (WAT), symmetrical aircraft behaviour, yaw damper setting, etc.) is provided.

The VSD should be the reference data for all the validation tests of the FSTD, as described in CS‑FSTD(A) or (H) (‘Table of FSTD validation tests’) or in the applicable special conditions, as required. While Chapters 1 (Performance) and 2 (Handling Qualities) of the Table of FSTD validation tests are widely based on aircraft reference data, Chapters 3 (Motion System), 4 (Visual System), and 5 (Sound Systems) should also be taken into consideration. For example, the VSD may include information related to the position of the pilot eye and the cockpit cut-off angle (visual ground segment test), information related to the computation of the transport delay or latency tests, vibration and sound reference data, etc.

The VSD should include all aspects of the objective validation regardless of the possible technological solutions to be used in the FSTD such as simulated versus stimulated equipment (typical areas subject to this consideration are flight controls, avionics and head-up display (HUD) response time, etc.).

In addition, other items to be taken into consideration are the ‘additional features’, as indicated in GM1 SIMD.100.

Finally, each element included in the VSD should include details of the versions of configuration items such as:

—         the aircraft (A/C) systems,

—         the avionics suite/avionics computers,

—         the engine version(s)/the full-authority digital engine control (FADEC), and

—         others.

CS-FSTD(A), CS-FSTD(H), and CS-FCD contain additional terminology and abbreviations of terms.

[Issue No: SIMD/2]