What additional ETSO standards must equipment obtaining ETSO-C161b comply with regarding position, velocity and time output?

In accordance with section 2.1 of RTCA/DO-253D Change 1, equipment obtaining this ETSO must also comply with the PVT output requirements of either ETSO-C145e, ETSO-C146e, or ETSO-C196b.

What is the required environmental performance standard for ETSO-C161b equipment?

The required performance is defined in RTCA/DO-253D Change 1, section 2.4, and the applicable procedures are detailed in CS-ETSO Subpart A, paragraph 2.1.

ETSO-C161b

Q: What is the scope of equipment covered by ETSO-C161b?

The standards apply to equipment intended to output deviations relative to a precision approach path using GBAS, and to provide position information to a navigation management unit that outputs deviation commands referenced to a desired flight path.

Q: What minimum performance standard must GBAS Positioning and Navigation Equipment meet to be eligible for ETSO-C161b marking?

The applicable standard is RTCA/DO-253D Change 1, Section 2, for GBAS airborne equipment class (GAEC) C to support GBAS Approach Service Type (GAST) C, or GAEC D to support both GAST C and GAST D approach service types.

Q: Does ETSO-C161b apply to equipment that provides the optional GBAS positioning service?

Yes, this ETSO also applies to equipment that implements the optional GBAS positioning service as defined in RTCA/DO-253D Change 1, Section 2.3.

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ETSO-C161b

ED Decision 2022/018/R

Ground-Based Augmentation System Positioning and Navigation Equipment

1 Applicability

This ETSO provides the requirements that Ground-Based Augmentation System Positioning and Navigation Equipment that is designed and manufactured on or after the date of this ETSO must meet in order to be identified with the applicable ETSO marking.

2 Procedures

2.1 General

The applicable procedures are detailed in CS-ETSO, Subpart A.

2.2 Specific

None.

3 Technical Conditions

3.1 Basic

3.1.1 Minimum Performance Standard

The applicable standard is that provided in (RTCA) document RTCA/DO-253D Change 1, Section 2, for GBAS airborne equipment class (GAEC) C to support GBAS Approach Service Type (GAST) C, or GAEC D to support both GAST C and GAST D approach service types. This ETSO also applies to equipment that implements the optional GBAS positioning service as defined in RTCA/DO-253D Change 1, Section 2.3.

The standards of this ETSO apply to equipment intended to output deviations relative to a precision approach path using GBAS, and to provide position information to a navigation management unit that outputs deviation commands referenced to a desired flight path. The positioning and navigation functions are defined in section 2.3 of RTCA/DO-253D Change 1. In accordance with section 2.1 of RTCA/DO-253D Change 1, equipment obtaining this ETSOA must also comply with the position, velocity and time (PVT) output requirements of either, ETSO‑C145e, ETSO‑C146e or ETSO‑C196b.

3.1.2 Environmental Standard

See CS-ETSO Subpart A, paragraph 2.1. The required performance is defined in RTCA/DO253D, Change 1, section 2.4.

3.1.3 Software

See CS-ETSO, Subpart A, paragraph 2.2.

3.1.4 Airborne Electronic Hardware

See CS-ETSO, Subpart A, paragraph 2.3.

3.2 Specific

3.2.1 Failure Condition Classification

See CS-ETSO, Subpart A, paragraph 2.4.

4 Marking

4.1 General

See CS-ETSO, Subpart A, paragraph 1.2.

4.2 Specific

None.

5 Availability of Referenced Documents

See CS-ETSO, Subpart A, paragraph 3

[Amdt ETSO/3]

[Amdt ETSO/7]

[Amdt ETSO/17]

Details

Source-Title: ETSO-C161b View latest amendments

Erulesid: ERULES-1963177438-9152 Compare versions

Domain: Initial airworthiness

Amendedby: Amendment 17

Applicabilitydate: 7 September, 2022

Entryintoforcedate: 7 September, 2022

Regulatorysource: ED Decision 2022/018/R Navigate

Regulatorysubject: CS-ETSO

Typeofcontent: CS (Certification specification)

Origin: EASA

Category: EAR