This standard specifies the terminology, requirements and instructions for the use of standard reference radiographs for examining discontinuities in investment cast steel castings. This standard is applicable to the radiographic inspection of investment cast steel castings for civil aircraft, and also applies to the radiographic inspection of other aviation investment cast steel castings.
HB 6573-1992 history
1992HB 6573-1992 Standard Reference Radiographic Films for Investment Steel Castings (Films Not Provided)