AMC1 ORA.FSTD.100(d) General

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

##### AMC1 ORA.FSTD.100(d) General *ED Decision 2026/006/R* **FSTD PERFORMANCE METRICS** (a) The organisation operating the FSTD should systematically collect data to develop performance metrics and perform data analysis in order to do all the following: (1) demonstrate the performance and use of each FSTD it operates, considering the number of the FSTDs and how an FSTD performs within the fleet, as applicable; (2) assess how well an FSTD supports its intended use; (3) identify recurring, systemic technical or operational issues, based on the results from the performance metrics for the preceding year(s); and (4) take timely corrective or preventive actions as necessary. (b) At least once per calendar year and in combination with the dossier as referred to in point (d) of [GM3 ORA.FSTD.100](#_DxCrossRefBm2072463108), the organisation operating the FSTD should, for each FSTD it operates, provide the following performance metrics for the preceding year to the competent authority: (1) ‘Planned available time’ defined as time, in hours, during which an FSTD is available to be used for training, testing and checking; (2) ‘Scheduled training time’ defined as time, in hours, during which an FSTD is scheduled to deliver training, testing and checking; (3) ‘FSTD support time’ defined as time, in hours, during which an FSTD is intentionally not available for training, testing and checking; (4) ‘FSTD downtime’ defined as time, in hours, during which an FSTD is unavailable, regardless of the cause and contains: (i) FSTD failure time, defined as time lost, in hours, during planned available time due to FSTD-specific failures; (ii) external failure time, defined as time lost, in hours, during planned available time due to external factors; (5) ‘Lost training time’ defined as the amount of scheduled training time, in hours, not delivered due to FSTD downtime; (6) ‘Number of FSTD discrepancies’ determined as deviations from the expected behaviour or performance of the FSTD; (7) ‘Number of interruptions during scheduled training time’ which is defined as unplanned events that temporarily suspend or disrupt an FSTD session, regardless of the completion of the session; (8) ‘FSTD availability’ calculated as follows: (Planned available time - FSTD downtime)/(Planned available time) \* 100; and (9) ‘FSTD reliability’ calculated as follows: (Planned available time - FSTD failure Time)/(Planned available time) \* 100 (c) The information related to the metrics should be available month by month and overall, for the preceding 12-month period. (d) The organisation operating the FSTD should carry out an analysis of trends, based on the results from the performance metrics for at least the preceding 12-month period. Such information should be provided to the competent authority as part of the performance metrics to support the oversight process. (e) The organisation operating the FSTD may develop and provide additional information or metrics to the competent authority, as appropriate, to demonstrate the performance and utilisation of the FSTD. *[applicable from 30 April 2028 — ED Decision 2026/006/R]*