MIL-DTL-32015/2 Complete Document History
Microphone, Linear, MBU-12, -20P and 23/P Oxygen Masks M-176/AIC

Complete Current Edition:
   REVISION B - MICROPHONE, LINEAR, MBU-12, -2 - May 6, 2004
   REV B VALIDATION 1 - VALIDATION NOTICE 1, REV B - March 18, 2009
   REV B VALIDATION 2 - Validation Notice 2 for Revision B - Dec. 17, 2013
   REV B VALIDATION 3 - VALIDATION NOTICE 3 FOR REVISION B - Sept. 27, 2018
   REV B VALIDATION 4 - VALIDATION NOTICE 4 FOR REVISION B - July 14, 2023

Obsolete Revision Information:
   REVISION A - MICROPHONE, LINEAR, MBU-12, -2 - Feb. 25, 2000
   BASE - MICROPHONE, LINEAR, MBU-12, -2 - Oct. 15, 1999