Any modification, change or transformation different to the stated purpose, requires a new permit.

This modification does not require any changes to the engine cowling.

"You don't yet know everything our modification requires."

He said modifications of the plan would not require new studies.

Any modification requires a building permit ($35 for the first $7,000 of work, $5 for each additional $1,000).

This modification also requires a small piece in the back of the marker to be taken out.

These tests and modifications required six months of work so that the first flying prototype was not completed until July 1946.

Major modifications required to shuttle, likely taking several years.

He said it was not precise enough about what modifications would require new pollution controls.

The modification is extensive and requires 32 man-hours to complete in the next 100 hours or at annual inspection.