INTERNATIONAL STANDARD FOR ENGINE MAKE, MODEL, AND SUBMODEL GROUPINGS BUSINESS RULES(8)

. If responsibility for design is transferred from one certifying authority to another certifying authority, the TYPE CERTIFICATE and COUNTRY OF CERTIFIYING AUTHORITY are updated to reflect the transfer (For example, the design responsibility for specific helicopters was transferred from Bell Helicopter Textron and the Federal Aviation Administration to Bell Helicopter Textron Canada and Transport Canada.  In this circumstance the type certificate value changed from H9SW to H–88 and the country of certifying authority value changed from the United States to Canada).

Examples:
Type Certificate Identifier 
 Country Of Certifying Authority 
 
E32 
 CANADA 
 
E.012 
 EUROPEAN UNION 
 
1E8 
 UNITED STATES 
 
ATC 14 
 UNITED STATES 
 
M17 
 FRANCE 
 
 
 
 

   3.10  AERONAUTICAL PRODUCT 
An aeronautical product is an aircraft, aircraft engine, a propeller, or appliance.
   3.11  COUNTRY OF CERTIFYING AUTHORITY 
The country of certifying authority is the official name of a country or sovereignty; or regional association of two or more countries that issues type certificates. 
. If responsibility for design is transferred from one certifying authority to another certifying authority, the TYPE CERTIFICATE and COUNTRY OF CERTIFYING AUTHORITY are updated to reflect the transfer (For example, the design responsibility for specific helicopters was transferred from Bell Helicopter Textron and the Federal Aviation Administration to Bell Helicopter Textron Canada and Transport Canada.  In this circumstance the type certificate value changed from H9SW to H–88 and the country of certifying authority value changed from the United States to Canada). 

. An example of a regional association is the EUROPEAN UNION. 

. If the type certificate value is NOT IDENTIFIED or NOT CERTIFICATED the value of the country of certifying authority is NOT APPLICABLE. 

   3.12  BEGIN DATE 
The date a specific valid value started in use. 
. If only the year is known default to the first day of that year. 

. If only the month and year is known, default to the first day of the month. 

. The value must be a valid date. 

. The date is recorded as YearMonthDay.

   3.13  END DATE 
The date a specific valid value ceased to be in use. 
. If only the year is known this field, default to the last day of that year. 

. If only the month and year is known, default to the last day of the month. 

. If present, the value must be a valid date.