机载低空无线电高度表 （英文）.pdf13页

English Translation Version for Reference Only Number：CTSO-C87a Date of approval：Apr 17, 2017 Approved by：Yang Zhenmei China Civil Aviation Technical Standard Order - 1 - This China Civil Aviation Technical Standard Order (CTSO) is issued according to Part 37 of the China Civil Aviation Regulations (CCAR-37). Each CTSO is a criterion which the concerned aeronautical materials, parts or appliances used on civil aircraft must comply with when it is presented for airworthiness certification. Airborne Low-Range Radio Altimeter 1. Purpose. This China Civil Aviation Technical Standard Order (CTSO) is for manufacturers applying for airborne low-range radio altimeter CTSO authorization (CTSOA). This CTSO prescribes the minimum performance standards(MPS) that airborne low-range radio altimeters must first meet for approval and identification with the applicable CTSO marking. 2. Applicability. This CTSO is applicable for new applications after the effective date of this CTSO. a. The applicant must submit an application according to this CTSO after its effective date. However, up to six months after this CTSO’s effective date, if the applicant could show working against the prior MPS English Translation Version for Reference Only CAAC CTSO-C87a - 2 - before the new change became effective, the application for previous revision could be accepted. b. The CTSOA article approved under a previous CTSO may still be manufactured under the provisions of original approval after the effective date of this CTSO. c. Major design changes to article approved under this CTSO will require a new authorization in accordance with section 21.310 of CCAR-21R3. 3. Requirements. New models of airborne low-range radio altimeters identified and manufactured on or after the effective date of this CTSO must meet the applicable MPS qualification and documentation requirements in EUROCAE document ED-30, Minimum Performance Standards for Airborne Low-Range Radar Altimeter Equipment, Edition 2, dated March 1980, as modified by Appendix 1 of this CTSO. 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
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