THIS SPECIFICATION HAS BEEN DECLARED CANCELLED BY THE AEROSPACE MATERIALS DIVISION, SAE, AS OF JUNE 2008 AND HAS BEEN SUPERSEDED BY AMS6387 TYPE I CLASS 1. THE REQUIREMENTS OF THE LATEST ISSUE OF AMS6387 SHALL BE FULFILLED WHENEVER REFERENCE IS MADE TO THE CANCELLED AMS-DTL-22499/4A. BY THIS ACTION, THIS DOCUMENT WILL REMAIN LISTED IN THE NUMERICAL SECTION OF THE INDEX OF AEROSPACE MATERIAL SPECIFICATIONS, NOTING THAT IT HAS BEEN SUPERSEDED BY SAE AMS 6387.