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AD/REC/3 Amdt 1 Sundstrand Cockpit Voice Recorders - Modification
Cockpit Voice and Flight Data Recording Cockpit Voice and Flight Data Recording Systems
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Cockpit Voice and Flight Data Recording Systems
| AD/REC/3 Amdt 1 | Sundstrand Cockpit VoiceRecorders - Modification | 18/2021 |
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| Applicability: | Sundstrand Data Control Cockpit Voice Recorder Models AV-557, AV-557A, AV‑557B and AV-557C. |
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| Requirement: | Modify the applicable Sundstrand Data Control Cockpit Voice Recorder Models in accordance with the technical requirements of:1. Sundstrand Data Control Service Bulletin (SB) No. 012-0296-109, as in force from time to time, for part numbers 980-6005-054 to -058 inclusive and 980‑6005-074 to -078 inclusive, and2. Sundstrand Data Control SB No. 012-0129-113, as in force from time to time, for part numbers 980-6005-010 to -013 inclusive, 980- 6005-020 to -023 inclusive, 980-6005-050 to -053 inclusive and 680-6005-060 to -063 inclusive.Note 1: The words “as in force from time to time” require compliance with the most recent version of the referenced document.Note 2: FAA Airworthiness Directive 83-16-01 Amendment 39-4075 is the basis of this AD. |
| Compliance: | Within 60 days after the commencement date of this AD, unless previously accomplished in accordance with a previous issue of this AD.Note 3: This Directive was originally issued as AD/RAD/42. Prior compliance with AD/RAD/42 is considered compliance with this Directive. |
| Commencement: | This AD commences on 10 September 2021. |
| Background: | Under conditions of vibration, connectors with split-ring sockets may cause CVRs to operate intermittently, give erroneous self test indications and contribute to sensor or tape-off-reel problems. Replacements are full ring sockets. |
| Amendment 1 of this AD removes obsolete references and makes minor editorial changes to reflect current requirements |
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David Punshon
Delegate of the Civil Aviation Safety Authority
27 August 2021