AMC1 ORA.FSTD.105(a)(4) Maintaining the FSTD qualification

• ED Decision 2026/006/R found in: Easy Access Rules for Aircrew (Oct 2026)

##### AMC1 ORA.FSTD.105(a)(4) Maintaining the FSTD qualification *ED Decision 2026/006/R* **CONFIGURATION CONTROL — HARDWARE AND SOFTWARE** (a) To preserve the integrity of the FSTD’s hardware and software used for training, the configuration control system should: (1) implement a process that includes the assessment of potential impact of a modification to the FSTD; and (2) provide traceability of the modifications performed on an FSTD to cover hardware and software, including firmware, ensuring that all modifications are documented and validated. (b) The FSTD, as applicable, should be maintained in a configuration that accurately represents the aircraft being simulated. This may be a specific aircraft tail number or may be a representation of a common standard. **CONFIGURATION MANAGEMENT — DATABASE MANAGEMENT** (c) The organisation operating the FSTD should establish a process for maintaining, updating and validating all installed databases for each qualification certificate held, and should: (1) identify and assess all databases relevant to FSTD capabilities, including visual model databases, navigational aids, declination, terrain, obstacles, terrain awareness warning systems, FMS/GNSS navigation database and other navigation-related aircraft databases; (2) specify the required frequency of updates for each system and, in cases it is applicable, adhere to the frequency of updates for those databases which have specific update requirements stated by the database supplier; (3) maintain configuration control records for each database update; and (4) perform validation checks to confirm the functionality of the FSTD following database updates. (d) When the organisation operating the FSTD declares a visual model used in training as representing a current real-world location and a permanent significant change is made to that location, the organisation should update the operating site and terrain model representing that location in a reasonable timeframe. (e) The organisation operating the FSTD should keep the navigational data and the instrument charts used for training up to date in accordance with: (1) when the FSTD ‘Navigation (NAV)’ feature has a fidelity level S, the aircraft update cycle (28-day cycle); (2) when the FSTD ‘Navigation (NAV)’ feature has a fidelity level R, the same update cycle date as for the navigational data (maximum a three-month cycle); (3) when the FSTD ‘Navigation (NAV)’ feature has a fidelity level G, the same update cycle date as for the navigational data. (f) In case of a legacy FSTD, the organisation operating the FSTD should follow the applicable primary reference document (PRD) for the frequency of the updates of the database systems. (g) Any aeronautical charts associated with navigation aids which are not required to be kept up to date should be annotated with the text ‘For FSTD training use only’. *[applicable from 30 April 2028 — ED Decision 2026/006/R]*