AMC1 ARA.FSTD.120 Continuation of an FSTD qualification

GENERAL

(a) Objective Testing. During recurrent evaluations, the competent authority should wish to see evidence of the successful running of the QTG between evaluations. The competent authority should select a number of tests to be run during the evaluation, including those that may be cause for concern. Again adequate notification would be given when special equipment is required for the test.

(b) Essentially the time taken to run the objective tests depends upon the need for special equipment, if any, and the test system, and the FSTD cannot be used for subjective tests or other functions whilst testing is in progress.

(c) For a modern FSTD incorporating an automatic test system, four hours would normally be required. FSTDs that rely upon manual testing may require a longer period of time.

(d) Subjective Testing. Essentially the same subjective test routine should be flown as per the profile described in AMC1 ARA.FSTD.100(a)(3) with a selection of the subjective tests taken from CS-FSTD(A) or CS-FSTD(H), as appropriate.

(e) Normally, the time taken for recurrent subjective testing is about 4 hours, and the FSTD should not perform other functions during this time.

(f) To ensure adequate coverage of subjective and objective tests during a recurrent evaluation, a total of 8 hours should be allocated, (4 hours for a BITD). However, it should be remembered that any FSTD deficiency that arises during the evaluation could necessitate the extension of the evaluation period.

[applicable until 29 April 2028 — ED Decision 2012/006/R]

(a) Objective Testing. During recurrent evaluations, the competent authority should seek evidence of the successful running and analysis of the QTG between evaluations. The competent authority should select a number of tests to be run during the evaluation, including those that may be a cause for concern. Adequate notification should be given when special equipment is required for the test.

(b) Essentially the time taken to run the objective tests depends on the need for special equipment, if any, and the test system, and the FSTD cannot be used for subjective tests or other functions whilst testing is in progress.

(c) For a modern FSTD incorporating an automatic test system, four hours would normally be required. FSTDs that rely on manual testing may require a longer period of time.

(d) Functions and subjective testing. A functions and subjective test profile should be flown to sample a selection of the subjective tests, as appropriate, based on the past performance of the device and the applicable qualification basis. Examples of a test profile which may be performed as part of the uninterrupted fly-out are provided in GM1 ARA.FSTD.100(a);(b);(c).

(e) Normally, the time taken for recurrent subjective testing is about four hours, and the FSTD should not perform other functions during this time. If additional configurations (e.g. second engine or avionics fit) are to be tested, more time should be planned as necessary.

(f) To ensure adequate coverage of functions and subjective tests and objective tests during a recurrent evaluation, a total of eight hours should be allocated. However, it should be noted that any FSTD discrepancy that arises during the evaluation could necessitate the extension of the duration of the testing.

[applicable from 30 April 2028 — ED Decision 2026/006/R]