Panel Hears Criticisms Of Academy

Civilian-led panel created by Congress to probe sexual assault at United States Air Force Academy, Colorado Springs, holds first public hearing, Washington; questions decisions of academy authorities and board members over last decade and their seeming failure to heed warning signs that sexual assault was growing problem for female cadets; Sen Wayne Allard says Visitors Board failed in its oversight mission; proposes board meet more often; panel head Tillie K Fowler says panel will focus on procedures and processes that contributed to problem and advise military officials (M)