CS ACNS.E.LAD.410 Position accuracy for non-survivable accidents
ED Decision 2021/008/R
The performance of the system ensures that based on the data that is received from the communication infrastructure, the point of end of flight is located with a two-dimensional position accuracy of 6 nautical miles (95-% probability) within 20 minutes of reaching the point of end of flight when the accident is not survivable.
[Issue: CS-ACNS/3]
AMC1 ACNS.E.LAD.410 Position accuracy for non-survivable accidents
ED Decision 2021/008/R
ACCEPTABLE MEANS OF COMPLIANCE APPLICABLE TO ALL SOLUTIONS
Compliance with CS ACNS.E.LAD.410 should be demonstrated:
(a) through the assumptions about the performance of the communication infrastructure that are provided in accordance with CS ACNS.E.LAD.320; and
(b) in applicable environmental conditions (refer to CS ACNS.E.LAD.310).
[Issue: CS-ACNS/3]
AMC2 ACNS.E.LAD.410 Position accuracy for non-survivable accidents
ED Decision 2021/008/R
ACCEPTABLE MEANS OF COMPLIANCE SPECIFIC TO SOLUTIONS BASED ON HRT
(a) The system should meet the conditions of AMC1 ACNS.E.LAD.410.
(b) To demonstrate compliance with CS ACNS.E.LAD.410, the following should be considered:
(1) the maximum time interval between two successive transmissions of aircraft position information; and
(2) the accuracy of the transmitted aircraft position.
[Issue: CS-ACNS/3]
GM1 ACNS.E.LAD.410 Position accuracy for non-survivable accidents
ED Decision 2021/008/R
COMMON GUIDANCE FOR ALL SOLUTIONS
(a) If the system transmits activation signals before or without deploying equipment, Appendix A defines an example flight trajectory that can be used, together with defined assumptions about the communication infrastructure, to assess the position accuracy of the point of end of flight for non-survivable accidents.
(b) If the position of the point of end of flight is computed based on position information that is transmitted before reaching that point, then the two-dimensional position accuracy of the point of end of flight depends at least on:
(1) the position-reporting period; and
(2) the accuracy of each transmitted position, which depends on:
(i) the two-dimensional position accuracy that is provided by the source of position information; and
(ii) the time accuracy of the transmitted position.
[Issue: CS-ACNS/3]
CS ACNS.E.LAD.420 Position accuracy for survivable accidents
ED Decision 2021/008/R
The performance of the system ensures that based on the data that is received from the communication infrastructure, the point of end of flight is located with a two-dimensional position accuracy of 200 meters (95-% probability) within 20 minutes of reaching the point of end of flight when the accident is survivable.
[Issue: CS-ACNS/3]
AMC1 ACNS.E.LAD.420 Position accuracy for survivable accidents
ED Decision 2021/008/R
ACCEPTABLE MEANS OF COMPLIANCE APPLICABLE TO ALL SOLUTIONS
(a) Compliance with CS ACNS.E.LAD.420 should be demonstrated through the assumptions on the performance of the communication infrastructure that are provided in accordance with CS ACNS.E.LAD.320.
(b) Compliance with CS ACNS.E.LAD.420 should be demonstrated under nominal GNSS satellite constellation conditions.
(c) If an ELT is used to comply with CS ACNS.E.LAD.420, that ELT should:
(1) be a second-generation automatic ELT or an ELT(DT);
(2) transmit an encoded position and use a message-coding protocol that is compatible with the position accuracy objective of CS ACNS.E.LAD.420;
(3) have capabilities G (internal/integral GNSS receiver) and C (crash survivability); and
(4) be automatically activated upon detection of a crash impact.
[Issue: CS-ACNS/3]