MIL-R-81261A, MILITARY SPECIFICATION: RAIN REPELLENT, GLASS WINDOW AND WINDSHIELD, FOR IN-FLIGHT APPLICATION (07-JUL-1970) [NO S/S DOCUMENT].,

MIL-R-81261A, MILITARY SPECIFICATION: RAIN REPELLENT, GLASS WINDOW AND WINDSHIELD, FOR IN-FLIGHT APPLICATION (07-JUL-1970) [NO S/S DOCUMENT]., This specification covers the requirement for a rain repellent formulation to be applied during flight in rain