§ 61.321 — How do I obtain privileges to operate an additional category or class of light-sport aircraft?

Regulation Text

If you hold a sport pilot certificate and seek to operate an additional category or class of light-sport aircraft, you must—

(a) Receive a logbook endorsement from the authorized instructor who trained you on the applicable aeronautical knowledge areas specified in § 61.309 and areas of operation specified in § 61.311. The endorsement certifies you have met the aeronautical knowledge and flight proficiency requirements for the additional light-sport aircraft privilege you seek;

(b) Successfully complete a proficiency check from an authorized instructor other than the instructor who trained you on the aeronautical knowledge areas and areas of operation specified in §§ 61.309 and 61.311 for the additional light-sport aircraft privilege you seek;

(c) Complete an application for those privileges on a form and in a manner acceptable to the FAA and present this application to the authorized instructor who conducted the proficiency check specified in paragraph (b) of this section; and

(d) Receive a logbook endorsement from the instructor who conducted the proficiency check specified in paragraph (b) of this section certifying you are proficient in the applicable areas of operation and aeronautical knowledge areas, and that you are authorized for the additional category and class light-sport aircraft privilege.

Research Notes

Authoritative Sources

AC 61-151 — Certification: Pilots and Flight and Ground Instructors. The FAA advisory circular that governs endorsement documentation for sport pilots, including the two-endorsement sequence (training + proficiency check) required by § 61.321.
§§ 61.309, 61.311 — Cross-referenced within § 61.321. Section 61.309 specifies aeronautical knowledge areas for sport pilots; § 61.311 specifies the areas of operation. Both apply to additional category/class privileges, not just initial certification.
§ 61.313 — Lists the categories and classes of light-sport aircraft (airplane, glider, gyroplane, airship, balloon, powered parachute, weight-shift-control aircraft). Any move between these requires the § 61.321 process.

Regulatory Context

Sport pilot category/class additions operate on a purely endorsement-based system — no FAA practical test or written exam retake required. The dual-instructor requirement (different instructor for proficiency check) is the regulatory substitute for an independent examiner check. This mirrors the concept behind the commercial pilot "different instructor" proficiency check but is applied at the sport pilot level. There is no NTSB enforcement case library specific to § 61.321 violations, as the endorsement system is self-documenting through the logbook.

The FAA application in step (c) is typically FAA Form 8710-11.

CFI Commentary

Highlighted phrases in the regulation text above link to instructor notes at the bottom of this page. Look for the amber or blue highlights — each one flags a gotcha or a pro tip worth knowing.

Amendment History

2004-07-27

Original sport pilot rule established. § 61.321 created the category/class addition endorsement system as part of the Sport Pilot/Light Sport Aircraft rule.

2025-07-24

Part of the broader Sport Pilot/Light Sport Aircraft rule update (Amendment 61-159). Text updated for consistency with new § 61.316 performance-based aircraft definition but the core endorsement requirements in § 61.321 were not substantively changed.

AOA Notes

These notes correspond to the highlighted phrases in the regulation text above. Each one flags something worth knowing — a common misread, a checkride gotcha, or a practical pro tip.

Gotcha: Your trainer can’t be your evaluator

This is the part that catches people off guard. The same instructor who taught you the new category or class cannot be the one who signs off on your proficiency check. That’s a deliberate separation built into the rule — a different set of eyes evaluates whether you’re actually ready. It’s the same principle behind not having a student grade their own exam. If you’re planning to add a new category, coordinate with two instructors from the start so you’re not scrambling to find a second one at the end.

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Pro Tip: There’s an FAA form — don’t skip it

Step (c) requires a completed FAA application, presented to the proficiency-check instructor before they endorse you. In practice this is typically FAA Form 8710-11. Don’t wait until the proficiency check day to think about the paperwork. Have it filled out and ready so the endorsement sequence flows in order: train → apply → proficiency check → final endorsement.