AIRPORT PLANNING MANUAL 9. SCALEDDRAWINGS 9.1. GENERAL This section provides plan views to the following scales: • English/American Customary Weights and Measures 1 inch = 32 feet 1 inch = 50 feet 1 inch = 100 feet • Metric 1:500 1:1000 EFFECTIVITY: ALL Section 9 Page 9-1 Dec08/03 w-apm1346