19NB017_MS91_MS92_FAT_Matrix_for_AH64.docx

FAT Matrix for AH-64 FCDC (MS91 & MS92) An acceptable first article sample of 50 FCDC assemblies shall be required when more than 12 months have elapsed since the production of the latest accepted production lot.

Before entering into quality production an acceptable first article sample of 50 FCDC assemblies shall be prepared. Of these 50 FCDC assemblies, 42 shall be expended in tests and 8 shall be retained for investigative purposes. The first article sample shall be tested as specified and in accordance with MIL-D-21625. Visual Examination - All 50 samples, 20 "G" Shock - 12 Samples, Vibration - 12 Samples, Temperature and Humidity Cycling (28 Day) - 18 samples.

After exposure to the environmental treatment, the FCDC assembly shall be x-rayed and n-rayed and conditioned for a minimum of 4 hours at -65ºF and +200ºF before being fired. The failure of any FCDC assembly test specimen to cause a 0.020 inch minimum diametrical swelling in the witness cap shall be cause for rejection of the first article sample. Any production prior to notification by the contracting agency of the first article acceptability shall be at the contractor's risk. The first article FCDC assemblies will not be applied as a part of the production lot quantity specified for delivery by the contract.