1.1 Instructions for radiographic inspection are usually provided by
the aircraft or component manufacturer as part of their scheduled
inspection, maintenance or overhaul manual or as part of an
Airworthiness Directive, Alert Service Bulletin, Service
Bulletin, Service Letter or similar document. When such
instructions are provided they shall have priority over this
standard. When no such instructions exist, this standard shall
apply. 1.2 Radiographic techniques shall be developed and approved by a person
holding valid certification to Level II or Level III of CGSB standard 48-GP-4,
aircraft structures category, or any similar certification acceptable to the
civil airworthiness authority. These radiographic techniques shall be
carefully documented to enable other radiographers to obtain comparable
results. 1.3 This standard shall only apply to those radiographic inspections in which
industrial radiographic film is used as the recording medium.