MIL-W-6729C, MILITARY SPECIFICATION: WATERTIGHTNESS OF AIRCRAFT, GENERAL SPECIFICATION FOR (08 MAR 1993)
MIL-W-6729C, MILITARY SPECIFICATION: WATERTIGHTNESS OF AIRCRAFT, GENERAL SPECIFICATION FOR (08 MAR 1993)., This specification testing for water tightness covers control of aircraft for rainy weather and and water aircraft washing.