The Breakdown

Inspections at the following airports found scales that were off by too much or too little.

Atlanta: 264 scales tested, 2 faulty; 99 percent compliance.

Chicago's O'Hare: Of 134 scales tested, 3 were faulty; 97 percent compliance.

Dallas: Of 118 scales, 7 were faulty; 94 percent compliance.

Houston: Of 65 scales, 1 was faulty; 98 percent compliance.

JFK: Of 608 scales, 48 were faulty; 92 percent compliance.

LaGuardia: Of 133 scales, 9 were faulty; 93 percent compliance.

Denver: Of 225 scales, 4 were faulty; 98 percent compliance.

San Francisco: Of 359 scales, 13 were faulty; 96 percent compliance.

LAX: Of 144 scales, 26 were faulty; 82 percent compliance.