ED Decision 2025/016/R
DEFINITIONS OF ENGINE TYPE CERTIFICATION DATE AND PRODUCTION DATE
VolumeĀ II of AnnexĀ 16 to the Chicago Convention contains three different references to applicability dates:
1. the ādate of manufacture for the first individual production modelā, which refers to the date when the type certificate is issued for the engine type or model;
2. the ādate of application for a type certificateā, which refers to the application date to the certificating authority of the State of Design of the engine type certification; and
3. the ādate of manufacture for the individual engineā, which refers to the production date of a specific engine serial number (date of EASAĀ FormĀ 1).
PointĀ 1 refers to the date of the first engine EASAĀ FormĀ 1 issued after the completion of the engine production pass-off test.
PointĀ 3 refers to the date used in the application of engine emissions production cut-off requirement, on or after which all in-production engine models must meet a certain emissions standard.
21.A.165(c)(3) includes the applicable production requirements for aircraft engine emissions.
ICAOĀ DocĀ 9501 āEnvironmental Technical Manualā VolumeĀ II provides guidance on these applicability dates.
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