---
kind: "unit"
title: "14"
title_heading: "Aeronautics and Space"
key: "chII/subchB/part325"
level: "part"
label: "Part 325"
heading: "Essential Air Service Procedures"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/14/chII-subchB-part325"
sections_count: 12
---

# Part 325 — Essential Air Service Procedures

Title 14 C.F.R. — Aeronautics and Space › Chapter II — Office of the Secretary, Department of Transportation (aviation Proceedings) › Subchapter B — Procedural Regulations

## Sections

- [§325.1. Purpose.](/cfr/14/325.1.md)
- [§325.2. Applicability.](/cfr/14/325.2.md)
- [§325.3. Definitions.](/cfr/14/325.3.md)
- [§325.4. State and local participation.](/cfr/14/325.4.md)
- [§325.5. Determinations and designations.](/cfr/14/325.5.md)
- [§325.6. Periodic reviews.](/cfr/14/325.6.md)
- [§325.7-325.9. Reserved](/cfr/14/325.7-325.9.md)
- [§325.10. Modification of the designated level of essential air service.](/cfr/14/325.10.md)
- [§325.11. Form of documents.](/cfr/14/325.11.md)
- [§325.12. Service of documents.](/cfr/14/325.12.md)
- [§325.13. Environmental evaluations and energy information not required.](/cfr/14/325.13.md)
- [§325.14. Conformity with subpart A of part 302.](/cfr/14/325.14.md)