3.4 AIRCRAFT ENGINE FAMILY
An engine model is an engine manufacturer’s designation for an engine grouping with similar design.
. The engine model is contained within the engine type certificate, or equivalent documentation (An engine type certificate may contain more than one engine model).
. The engine model must contain a space between separate terms or words (for example, use “TWIN WASP”, not “TWINWASP” or use “RB211 524G”, not RB211524G”).
. The engine model must not contain a space as a separator between alphabetic and numeric characters (for example, “JT3D”, not “JT 3 D”).
. The engine model must not contain a dash (-), slash (/), or other special character.
. The engine model when concatenated with the engine make must be unique in order to identify that engine grouping.
Examples:
Make
Model
ALLISON
250
CONTINENTAL
O300
TURBOMECA
ARRIEL1
3.6 AIRCRAFT ENGINE SUBMODEL
An engine submodel is an engine manufacturer’s designation to identify differences within an engine model grouping.
. The engine submodel is contained within the engine type certificate, or equivalent documentation (An engine type certificate may contain more than one engine model and submodel).
. The engine submodel usually reflects the lowest level description of an engine without uniquely identifying one engine (For example, the CONTINENTAL–O300–D cannot be described at a lower level without uniquely identifying that engine).
. Where an engine model has no series designation, for example PRATT AND WHITNEY–PW2643, the submodel will have the value “NO SUBMODEL EXISTS.”
. Where one submodel of an engine model, typically the earliest one, is known by the model designation (for example, PRATT AND WHITNEY–PW2037), the submodel has the value “UNDESIGNATED SUBMODEL” provided that the engine model also has other submodel designators, for example PRATT AND WHITNEY–PW2037–M, et al.
. If an engine model has the submodel “NO SUBMODEL EXISTS” and the engine manufacturer subsequently produces an engine submodel for the same engine model, the submodel is replaced with the value “UNDESIGNATED SUBMODEL.”
. The engine submodel must not contain a dash (-), slash (/), or other special character.
. The engine submodel must contain a space between separate terms or words (for example, use “NO SUBMODEL EXISTS”, not “NOSUBMODELEXISTS”). 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：INTERNATIONAL STANDARD FOR ENGINE MAKE, MODEL, AND SUBMODEL GROUPINGS BUSINESS RULES(5)
