сертифікація за шумом (рівнем шуму)
certification noise level database
certification noise value
take-off noise certification
aircraft noise certification
international noise certification database
noise certification data
noise certification database
noise certification documentation
noise certification reference procedure
noise certification scheme
noise certification standard
noise certification test
noise re-certification
noise floor; noise level
certification program
type certification
re-certification
re-certification of non-compliant aircraft
request for certification
certification
certification basis
certification jobs
certification modification
certification rules
certification test
certification test flight
certification tests
aeroplane type certification
airport certification
autoland certification
emission certification method
emissions certification