# External Marking Requirement for Small Unmanned Aircraft
> **Rule** · Interim final rule. · Published 2019-02-13 · Effective 2019-02-25 · 84 FR 3669
## Document
- **Document number:** 2019-00765
- **Category:** other
- **Type:** Rule
- **Action:** Interim final rule.
- **Citation:** 84 FR 3669
- **Publication date:** 2019-02-13
- **Effective date:** 2019-02-25
- **FAA docket:** Docket No. FAA-2018-1084, Amdt. No. 48-2
## Abstract

This interim final rule requires small unmanned aircraft owners to display the unique identifier assigned by the FAA upon completion of the registration process (registration number) on an external surface of the aircraft. Small unmanned aircraft owners are no longer permitted to enclose the FAA-issued registration number in a compartment.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2019/02/13/2019-00765/external-marking-requirement-for-small-unmanned-aircraft)
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