4-1.     Purpose

4-2.     Definitions

4-3.     Types of Automated Stations

4-4.     Certification

4-5.     General Procedures

4-6.     General Equipment Procedures

4-7.     Procedures at Non-Federal Observation (NF-OBS) Sites

4-8.     Procedures at Non-Federal AWOS Sites

4-9.     Procedures for Handling Aircraft Mishaps at Automated Sites

4-10.   General Requirements for Record Keeping

Figure 4-1.    Operator Procedures for Providing Augmentation and
                     Backup Information

4-11. - 4-12. Reserved