Home' RTCA Documents for Review : DO_XYZ_SPR_SC213_WG_79_OC_FRAC Contents 1
© 2018 RTCA, Inc.
This document is the minimum operational, safety, and performance requirements (SPR)
and interoperability requirements (INTEROP) for Enhanced Flight Vision System (EFVS)
associated with recommended takeoff minima.
Takeoff minima are established for the use of vision systems technologies, treated as
subsystems, which together with other subsystems including navigational aids and airport
lighting and markings, are used to accomplish the operational goal, achieve levels of
reliability, availability, and integrity appropriate to the intended function and phase of
flight. These levels are consistent with other systems and subsystems used for the same
intended function and phase of flight.
Safety, performance, and interoperability requirements are derived from examination of
the operation and the associated performance and safety analyses. The operation is outlined
in the Operational Services and Environment Definition (OSED) in Appendix A. The
Operational Performance Assessment (OPA) for this operation is established in Appendix
B. Finally, the Operational Safety Assessment (OSA) is presented in Appendix C which
analyzes the operational safety by considering potential hazards to which the flight crew
and/or aircraft might be exposed during the EFVS takeoff operation, and derives
requirements in order to control the likelihood of the hazards and their effects. The
assessment criteria are derived in whole or in part from applicable, existing guidance
material which identifies airworthiness approval guidance for airborne systems used during
a takeoff in low visibility weather conditions.
All material in this document was developed jointly by EUROCAE Working Group 79
(WG79) and RTCA Special Committee-213 (SC-213).
The requirements specified in this document are necessary to provide adequate assurance
that the aircraft systems and other systems, when operating together, will perform their
intended function – EFVS Takeoff – in an acceptably safe manner for the operations
defined in the OSED. The system here includes the interaction and interoperability with
ground and air navigation service provider elements.
Purpose of This Document
This document defines and allocates the set of minimum requirements for the end-to-end
operational, safety, performance, and interoperability aspects for implementations of EFVS
takeoff with recommended minima.
Allocation of these requirements is done by this SPR/INTEROP to the necessary domains
of the aircraft with dependencies and assumptions, if necessary, to the airport operations,
air navigation services providers (ANSP), and infrastructure level.
These requirements are intended to be used for approval processes including aircraft type
design approval, aircraft operator operational approval, and (should they be necessary) Air
Traffic Services (ATS) provider operational approval. Section 1.1.3 below provides more
information on the use of this document for approvals.
In addition, this document provides guidance to determine the levels of design assurance
and performance that are needed for each element (aircraft, operator, and, if applicable,
ANSP—Air Navigation Service Provider and airport infra-structure level) to support the
Takeoff Minima by use of Enhanced Flight Vision Systems
An Enhanced Flight Vision System (EFVS) is an electronic means to provide a display of
the forward external scene topography through the use of imaging sensors. The EFVS
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