Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 2058

d) if the CVR has a bulk erasure device, the installation should be designed to prevent operation of the device during flight time or crash impact. 2.2 Performance requirements 2.2.1 The CVR will be capable of recording on at least four tracks simultaneously except for the CVR in Chapter 6, 6.3.7.2. To ensure accurate time correlation between tracks, the CVR is to record in an in-line format. If a bi-directional configuration is used, the in-line format and track allocation should be retained in both directions. 2.2.2 The preferred track allocation is as follows: Track 1 — co-pilot headphones and live boom microphone Track 2 — pilot headphones and live boom microphone Track 3 — area microphone Track 4 — time reference plus the third and fourth crew members’ headphone and live microphone, if applicable. Note 1.— Track 1 is located closest to the base of the recording head. Note 2.— The preferred track allocation presumes use of current conventional magnetic tape transport mechanisms, and is specified because the outer edges of the tape have a higher risk of damage than the middle. It is not intended to preclude use of alternative recording media where such constraints may not apply. 2.2.3 The CVR, when tested by methods approved by the appropriate certificating authority, will be demonstrated to be suitable for the environmental extremes over which it is designed to operate. 2.2.4 Means will be provided for an accurate time correlation between the FDR and CVR. Note.— One method of achieving this is by superimposing the FDR time signal on the CVR. 2.3 Additional information The manufacturer usually provides the national certificating authority with the following information in respect of the CVR:

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