What is the difference in minimum bearing accuracy between EUROCAE ED-22B and RTCA DO-196 for VOR receiving equipment?

ED-22B demands greater minimum bearing accuracy: ±2.7° versus ±3.0°.

Which VOR ground station type is covered by EUROCAE ED-22B requirements and tests but not by RTCA DO-196?

ASB Doppler VOR ground stations, which are used in Europe and other parts of Europe but not in CONUS.

ETSO-2C40c

Q: What minimum performance standard must VOR receiving equipment operating within 108-117.95 MHz meet to be identified with the applicable ETSO marking?

The equipment must meet the standards set forth in EUROCAE document ED-22B (1988) or RTCA DO-196, plus additions shown in paragraph 3.2 of ETSO-2C40c.

Q: What is the applicability date for VOR receiving equipment to comply with ETSO-2C40c?

The ETSO applies to VOR receiving equipment operating within 108-117.95 MHz that is manufactured on or after the date of this ETSO.

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ETSO-2C40c

ED Decision 2003/10/RM

VOR Receiving Equipment Operating Within the Radio Frequency Range 108-117.95 Megahertz

1 Applicability

This ETSO gives the requirements which VOR receiving equipment operating within 108-117.95 MHz that is 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

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

Standards set forth in EUROCAE document ED-22B (1988) or RTCA DO-196 plus additions shown paragraph 3.2 below.

3.1.2 Environmental Standard

See CS-ETSO Subpart A paragraph 2.1

3.1.3 Computer Software

See CS-ETSO Subpart A paragraph 2.2

3.2 Specific

Radio Technical Commission for Aeronautics (RTCA) Document DO-196, used in US TSO-C40c differs from EUROCAE document ED-22B as follows:

— ED-22B demands greater minimum bearing accuracy (±2.7° Vs±3.0°).

— ED-22B contain requirements and tests for operation with ASB Doppler VOR ground stations (ASB Doppler VORs are used in Europe and other parts of Europe but not in CONUS)

4 Marking

4.1 General

Marking is detailed in CS-ETSO Subpart A paragraph 1.2.

4.2 Specific

None.

5 Availability of Referenced Document

See CS-ETSO Subpart A paragraph 3.

Details

Source-Title: ETSO-2C40c View latest amendments

Erulesid: ERULES-1963177438-7139 Compare versions

Domain: Initial airworthiness

Amendedby: Initial issue

Applicabilitydate: 24 October, 2003

Entryintoforcedate: 24 October, 2003

Regulatorysource: ED Decision 2003/10/RM Navigate

Regulatorysubject: CS-ETSO

Typeofcontent: CS (Certification specification)

Origin: EASA

Category: EAR