CS-SIMD Issue 2

The objective of this Decision is to improve existing requirements and guidance material for the definition of the scope of aircraft validation source data (VSD) to support the objective qualification of simulators. The initial Issue was published on 2 December 2014.

This Decision amends CS-SIMD to:

• extend the applicability of CS-SIMD to categories of aircraft other than aeroplanes and helicopters.
• clarify the responsibilities and tasks of the data provider vis-a-vis the European Union Aviation Safety Agency (EASA) in the context of validating data for flight simulator training devices (FSTDs).
• describe the different steps of the process to provide validation data (VD) for FSTDs.
• clarify the means for substantiating the scope of VSD.
• clarify the concept and differences between VD and VSD.

To this aim, the experience gained since the first implementation of the Certification Specifications and Guidance Material for Simulator Data (CS-SIMD) has been an essential element.

The amendment is expected to facilitate the compliance of applications with the operational suitability data (OSD) requirements for simulator data as well as to make the validation data approval process clearer and more streamlined.

The objectives of Opinion No 01/2022 are the following:

1. Regarding large aeroplane tyre pressure monitoring (RMT.0586), to decrease the risk of hazardous or catastrophic tyre failures of large aeroplanes caused by inadequate tyre inflation pressure.
2. Regarding helicopter ditching and water impact occupant survivability (RMT.0120), to mitigate the safety risks linked to the operation of helicopters over water for extended periods of time.The proposed amendments that stem from these two rulemaking tasks are expected to increase safety without any significant economic impact, and with no environmental or social impact.
3. Regarding the conversion of Class D compartments, to exempt operators of certain in-service large aeroplanes used for business operations from the requirement to convert the Class D compartments of these aeroplanes, as introduced by Commission Implementing Regulation (EU) 2020/1159 on the introduction of new additional airworthiness requirements.The proposed amendment would ensure that the requirement is proportionate and cost-efficient. It would also increase harmonisation with the equivalent FAA regulation.