Source: http://docreview.rtca.org/?iid=160147&startpage=page0000045
Timestamp: 2018-07-19 23:05:36
Document Index: 740163299

Matched Legal Cases: ['§ 2', '§ 16', '§ 16', '§ 4', '§ 4', '§ 19', '§ 19', '§ 19', '§ 19']

RTCA Documents for Review : DO-204B, MOPS Aircraft ELT 406MHZ, Page 45
© EUROCAE, 2018 35 NOTE 1: ELT system operating on DC power – The gradual reduction to zero of the 1 primary power voltage(s) shall produce no detrimental effects (see § 2.7). 2 NOTE 2: In respect of ED-14G/DO-160G § 16.5.2.3 and § 16.5.2.4 (Momentary 3 Power Interruptions) the test may be carried out following the power 4 interruptions. 5 4.4.6 Voltage Spike Conducted 6 Perform the test contained in ED-14G/DO-160G, Section 17.0. 7 This paragraph describes testing of the ELT system to ensure that it can withstand the 8 effects of voltage spikes on the aircraft’s electrical system. These tests are applicable 9 only if any portion of the ELT system (e.g., the remote monitor) is designed to 10 interface to the aircraft’s electrical system. 11 ELT(DT) shall be activated before the test. 12 For ELT(AD), verify the absence of unintended deployment. Verify the correct 13 deployment upon test completion by stimulating the deployment sensor. 14 The ELT system components shall be subjected to the test conditions specified in ED- 15 14G/DO-160G and shall meet the specifications of the following paragraph: § 4.3.1 16 Aliveness Test except for ELT(DT) for which the transmission performances shall not 17 be affected by the test conditions. 18 4.4.7 Audio Frequency Conducted Susceptibility 19 Perform the test contained in ED-14G/DO-160G, Section 18.0. 20 This paragraph describes testing to ensure that the ELT system is not adversely 21 affected by audio frequency signals conducted by the aircraft electrical system. These 22 tests apply only if any ELT system component, (eg: Remote Monitor), is designed to 23 be interfaced to the aircraft electrical system. 24 After the ELT system components have been subjected to this test, establish 25 compliance with the specifications of the following paragraph: § 4.3.1 Aliveness Test 26 ELT(DT) shall be activated before the test and the transmission performances shall 27 not be affected by the test conditions. 28 For ELT(AD), verify the absence of unintended deployment. Verify the correct 29 deployment upon test completion by stimulating the deployment sensor. 30 4.4.8 Induced Signal Susceptibility 31 Perform the test contained in ED-14G/DO-160G, Section 19.0. 32 The ELT unit should be switched to “ARMED” , “OFF” in the case of an ELT(S) without 33 water sensor, or “ON” in the case of an ELT(DT). Testing for adverse effects due to 34 magnetic fields induced into the ELT system shall be conducted in accordance with 35 EUROCAE ED-14G/RTCA DO-160G, § 19.3.1. For ELT systems with interconnecting 36 cables, the ELT system components must also be tested for adverse effects due to 37 magnetic fields, electrical fields or spikes induced into the wires, in accordance with 38 EUROCAE ED-14G/RTCA DO-160G, § 19.3.2, § 19.3.3 and § 19.3.4. 39 For ELT(DT), the transmission performances shall not be affected by the test 40 conditions. 41 For other ELT types, after the ELT system components has been subjected to this 42 test: 43 a. the ELT unit shall not have activated as a result of this test, 44 b. establish compliance with the specifications of the aliveness test. 45 For ELT(AD), verify the absence of unintended deployment. 46 4.4.9 Radio Frequency Susceptibility 47 The ELT unit should be switched to “ARMED”, “OFF” in the case of an ELT(S) without 48 water sensor, or “ON” in the case of an ELT(DT). ELT systems shall then be tested to 49 EUROCAE ED-14G/RTCA DO-160G Section 20.0 Susceptibility Test Level Category 50 R. 51