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

(iii)Option Selectable Software (OSS)LSAP that contains approved and validated components andcombinations of components that may be activated or modifiedby the aircraft operator within defined TC/STC holderboundaries.(c)Database Field Loadable Data (DFLD)Data that is field loadable into target hardware databases.(i)DatabasesA term generally misused to describe the "data" that is fieldloaded into target hardware. However, the database isactually an embedded item that resides within the targethardware and is not, itself, field loadable. The processnormally described as "loading a database" actually loads adata file onto the target hardware's embedded database. Theupdating of the data held on a database, by the uploading of anew data file, will normally be conducted to provide formodifications to operating functions, including the revision ofthe aircraft performance or navigational data. It should benoted that whilst "LSAP" is only associated with FLS(executable code), certain DFLD should be treated in the samemanner, in that they will have their own part number requiringcontrol as an aircraft part and should be accompanied bycontrolled release documentation (JAA Form One, EASA Form1 or FAA 8130-3). The form of release required for differenttypes of DFLD is defined in paragraph 3.(ii)Data FileA specific file that contains the actual data that is the object ofthe database and is field loaded.(d)Target HardwareThe hardware such as LRU and modules that are intended to be loadedwith FLS or DFLD.(i)Examples of target hardware for LSAP (FLS) could be: anElectronic Engine Control (EEC), a Digital Flight DataAcquisition Unit (DFDAU), an Auxiliary Power Unit'sElectronic Control Unit (ECU), a Flight Guidance Computer(FGC), or an Integrated Modular Avionics (IMA) Unit.AN-43 P.330 September 2005