сертифікація типу літака
propeller aeroplane
aeroplane shoot
aeroplane flight manual
aeroplane reference field length
type certification
engine type certification
certification program
re-certification
re-certification of non-compliant aircraft
request for certification
certification
certification basis
certification jobs
certification modification
certification noise level database
certification noise value
certification rules
certification test
certification test flight
certification tests
take-off noise certification
aircraft noise certification
airport certification
autoland certification
emission certification method
emissions certification
engine certification scheme
engine emissions certification standards
handling quality certification
international noise certification database
noise certification
noise certification data