MIL-HDBK-6870 Nondestructive Inspection Program Requirements for Aircraft and Missile Materials and PartsThis handbook provides guidance to government personnel and contractors for defining the requirements for establishing an acceptable Nondestructive Inspection NDI program for the development, production, and sustainment phases of DoD aircraft and missile structural components when directly referenced in the item specification contract or order. This handbook is for guidance only and cannot be cited as a requirement.

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MIL-HDBK-6870B

5.3.3    NDI processes.

Company process specifications or other industry accepted processes may be used if approved by  the   NDIRRB.     The   following   nondestructive   inspection   methods   and   the   associated specifications are acceptable:

a.   Magnetic  particle,  in  accordance  with  ASTM  E1444/E1444M,  MIL-STD-1530  and

MIL-STD-1907, as applicable.

b.   Penetrant,  in  accordance  with  ASTM  E1417,  MIL-STD-1530,  MIL-STD-1907,  SAE AMS 2644, and SAE AMS 2647, as applicable.

c.   Film Radiography, in accordance with ASTM E1742/E1742M.

d.   Digital or Computed Radiography, in accordance with ASTM E2033, E2662, E2698, E2736, or E2737, as applicable.

e.   Ultrasonic,  in  accordance  with  SAE  AMS-STD-2154  and  ASTM  E213,  E164  or

E2580, as applicable.

f.    Eddy  current,  in  accordance  with  MIL-STD-1537  and  ASTM  B244,  E215,  E309, E376, E426 or E1004, as applicable.

g.   Thermography, in accordance with ASTM E2582.

h.   Magnetic rubber, in accordance with SAE-AMS-I-83387.

i.    Leak testing, in accordance with ASTM E498 and ASTM E427, as applicable. j.    Temper etch, inspection in accordance with MIL-STD-867.

k.   Shearography, in accordance with ASTM E2581.

5.3.4    NDI procedures.

Procedures  will  be  provided  for  inspection  of  each  part  requiring  NDI,  except  when  special procedures are utilized.   These procedures should be in accordance with the requirements of the component drawing, the company process specification or other engineering requirements and should contain the information listed below:

a.   Specific part or drawing reference.

b.   Specific part material; surface finish and part preparation, as applicable.

c.   Manufacturer and model number of all instrumentation to be used, indicating optional equivalents, if desired.

d.   Fixturing requirements, as applicable.

e.   Manufacturer and identification of required inspection materials.

f.    Reference to company process specification procedure if applicable.

g.   Calibration/standardization   procedure   and   reference   standard   identification   as applicable.

h.   Identification   of   areas  to   be   inspected,   detailed   steps   and   level   of   inspector qualification  required,  and  acceptable  defect  criteria  including  location  and  critical  orientation (based  upon  primary  stress  condition  and  direction)  or  equivalent  drawing  or  specification reference for these criteria.

i.    Identifiable precautions in use of the inspection procedure.

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