# 39 CFR § 310.6: Advisory opinions

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-39-310.6

## Section

- **Citation:** 39 CFR § 310.6
- **Heading:** Advisory opinions
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 39—Postal Service > CHAPTER I—UNITED STATES POSTAL SERVICE > SUBCHAPTER E—RESTRICTIONS ON PRIVATE CARRIAGE OF LETTERS > PART 310—ENFORCEMENT OF THE PRIVATE EXPRESS STATUTES

## Text

An advisory opinion on any question arising under this part and part 320 of this chapter may be obtained by writing the General Counsel, U.S. Postal Service, 475 L'Enfant Plaza SW., Washington, DC 20260-1100. A numbered series of advisory opinions is available for inspection by the public in the Library of the U.S. Postal Service, and copies of individual opinions may be obtained upon payment of charges for duplicating services.
[75 FR 12123, Mar. 15, 2010]

## Nearby sections

- [39 CFR § 310.1 § 310.1 Definitions.](https://www.frixlaw.com/law-library/statutes/ecfr-39-310.1.md)
- [39 CFR § 310.2 § 310.2 Unlawful carriage of letters.](https://www.frixlaw.com/law-library/statutes/ecfr-39-310.2.md)
- [39 CFR § 310.3 § 310.3 Exceptions.](https://www.frixlaw.com/law-library/statutes/ecfr-39-310.3.md)
- [39 CFR § 310.4 § 310.4 Responsibility of carriers.](https://www.frixlaw.com/law-library/statutes/ecfr-39-310.4.md)
- [39 CFR § 310.5 § 310.5 Payment of postage on violation.](https://www.frixlaw.com/law-library/statutes/ecfr-39-310.5.md)
- [39 CFR § 310.6 § 310.6 Advisory opinions.](https://www.frixlaw.com/law-library/statutes/ecfr-39-310.6.md)
- [39 CFR § 310.7 § 310.7 Amendment of regulations.](https://www.frixlaw.com/law-library/statutes/ecfr-39-310.7.md)
- [39 CFR § 320.1 § 320.1 Definitions.](https://www.frixlaw.com/law-library/statutes/ecfr-39-320.1.md)
- [39 CFR § 320.2 § 320.2 Suspension for certain data processing materials.](https://www.frixlaw.com/law-library/statutes/ecfr-39-320.2.md)
- [39 CFR § 320.3 § 320.3 Operations under suspension for certain data processing materials.](https://www.frixlaw.com/law-library/statutes/ecfr-39-320.3.md)
- [39 CFR § 320.4 § 320.4 Suspension for certain letters of college and university organizations.](https://www.frixlaw.com/law-library/statutes/ecfr-39-320.4.md)
- [39 CFR § 320.5 § 320.5 Suspension for certain international-ocean carrier-related documents.](https://www.frixlaw.com/law-library/statutes/ecfr-39-320.5.md)
- [39 CFR § 320.6 § 320.6 Suspension for extremely urgent letters.](https://www.frixlaw.com/law-library/statutes/ecfr-39-320.6.md)
- [39 CFR § 320.7 § 320.7 Suspension for advertisements accompanying parcels or periodicals.](https://www.frixlaw.com/law-library/statutes/ecfr-39-320.7.md)

---

Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-39-310.6. Check the current official text before relying on it. Not legal advice.