Chapter 2. General ControlSection 1. General2-1-1. FLIGHT SERVICE2-1-2. DUTY PRIORITY2-1-3. TRANSFER OF POSITION RESPONSIBILITY2-1-4. PROCEDURAL APPLICATIONSSection 2. Interphone Communications2-2-1. GENERAL2-2-2. TRANSMISSION PRIORITIES2-2-3. PRIORITY INTERRUPTION2-2-4. MESSAGE INITIATION2-2-5. MESSAGE TERMINATIONSection 3. General Phraseology2-3-1. PURPOSE2-3-2. WORDS AND PHRASES2-3-3. ICAO PHONETICS2-3-4. NUMBER USAGE2-3-5. EXPEDITIOUS COMPLIANCESection 4. Weather Phraseology2-4-1. SURFACE OBSERVATIONS2-4-2. ANNOUNCING MISSING ITEMS2-4-3. WEATHER REMARKS2-4-4. WEATHER ADVISORIES2-4-5. RADAR2-4-6. WINDS AND TEMPERATURES ALOFT FORECASTSection 5. Aviation Phraseology2-5-1. RELAY OF ATC COMMUNICATIONS2-5-2. FACILITY IDENTIFICATION2-5-3. AIRCRAFT IDENTIFICATION2-5-4. DESCRIPTION OF AIRCRAFT TYPES2-5-5. AIRCRAFT EQUIPMENT CODES2-5-6. AIRWAYS AND ROUTES2-5-7. NAVAID TERMS AND FIXES2-5-8. RUNWAY CONDITIONS