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31 July 2011 C1 CIVIL AVIATION DEPARTMENT HONG KONG ...

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(iii)If airborne equipment has only one part number, whichrepresents a specific configuration of software and hardware,the unit identification on the nameplate should be changed ifnew software is loaded. In order for this to be embodied onthe aircraft this should be accomplished in accordance with anaircraft manufacturer's SB. The software part number storedin the target computer after data loading should be verifiedelectronically and confirmed to be an approved configurationas detailed in the SB.(d)Verification that the upgrade actually is needed.(i)(ii)If the system is working as required and the FLS or DFLDupgrade is not introducing a required solution or functionaddition or change, it is not always necessary to upgrade theFLS or DFLD simply for the sake of upgrading. Equally, it ispossible that the upgrade could introduce problems that did notexist before.It is also necessary to check any support agreements to ensurethat customer support for the FLS or DFLD will remain valid.(e)Identify what has changed between the different versions of the FLS orDFLD. This should include identifying and recording within the FLSand DFLD register the problems that have been fixed and whatfunctionality has been added or removed. (See paragraph 1.1(d) ofthis Appendix.)2 Control of FLS or DFLD Tooling2.1 FLS or DFLD can be loaded into the Target Hardware using a variety of toolsas recommended and/or approved by the aircraft or Target Hardwaremanufacturer. These can include Original Equipment Manufacturer (OEM)supplied tools, Commercial Off The Shelf (COTS) tools or in-housedeveloped tools.2.1.1 There are a number of issues associated with FLS or DFLD toolingthat the aircraft operator would need to take into account if analternative to the tooling recommended by the aircraft or TargetHardware manufacturer was to be considered. Prior to seeking theaircraft or Target Hardware manufacturer's approval for any alternativetools' use, the aircraft operator should take the following items intoaccount. These are associated with the general tool selection, and thecontrol and the suitability of those tools.30 September 2005 AN-43 A1 P.4

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