AIM ¶ 9-1-3 — Safety Alerts and Charting Notices
AIM 9-1-3 explains FAA Safety Alerts, Charting Notices, and Data Product Notices for pilots. Study guide for written tests, oral exams, and checkrides.
AIM 9-1-3 describes three types of notices the FAA's Aeronautical Information Services (AIS) publishes to keep pilots informed about issues or changes affecting digital aeronautical products (charts, publications, and data).
- Safety Alerts (SAs): Notify users of an error discovered or reported in a digital product. The notice identifies the specific product affected and the effective date(s).
- Charting Notices (CNs): Announce a planned enhancement to a chart or publication, along with the effective date when the change takes effect.
- Data Product Notices (DPNs): Notify users of a system outage, or alternatively a developmental upgrade to a digital product and when that upgrade goes live.
These notices matter because pilots rely on accurate, current charts and data for safe navigation. Checking the AIS website before flight planning — especially when using digital products — helps you catch known errors or upcoming changes that could affect your flight. The full listing is published at the FAA AIS Safety Alerts page referenced in the paragraph.
Five FAA-written-style questions. Instant explanations, every answer cites its source — no account needed.
You are flying VFR in Class E airspace at 8,500 feet MSL during the day. What are your minimum visibility and cloud clearance requirements?