ED Decision 2013/012/R
1 Applicability
This ETSO gives the requirements which Airborne Low-range Radio Altimeters that are 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-30 Minimum Performance Standards for Airborne Low-Range Radar Altimeter Equipment, dated March 1980 as modified by Appendix 1 to this ETSO.
The applicable Chapter 2 and Chapter 3 requirements are defined in Table 1 for the appropriate functional class.
Table 1
Low-Range Radio Altimeter Functional Class |
Low-Range Radio Altimeter Class Description |
Applicable requirements in ED-30 |
A |
Approach and landing |
2.1-2.8, 3.1.1, 3.2.1 (all), 3.3.1 |
B |
Terrain Avoidance (ground proximity warning systems) |
2.1-2.8, 3.1.2, 3.2.3 (all), 3.3.2 |
Note: It is possible for a radio altimeter to meet both functional classes.
3.1.2 Environmental standard
See CS-ETSO, Subpart A, paragraph 2.1
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
There is no standard minimum failure condition classification for this TSO. The failure condition classification appropriate for the equipment will depend on the intended use of the equipment in a specific aircraft.
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.
[Amdt ETSO/8]
ETSO-C87a sets requirements for airborne low-range radio altimeters manufactured on or after its date, referencing EUROCAE ED-30 with functional class-specific chapters and no standard failure condition classification.
* Summary by Aviation.Bot - Always consult the original document for the most accurate information.
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