AC 90-89C

Advisory circular · Amateur-Built Aircraft and Ultralight Flight Testing Handbook

Approved
February 14, 2023
Last reviewed
July 19, 2024
Cancels
AC90-89B
Family
AC 90-89 · 3 versions
Revision
C
14 CFR parts
1, 21, 23, 91, 103

Guidance, not mandatory unless a rule or AD requires it. DRS record last changed March 30, 2026.

Show pages 116–127
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Appendix C C-3 C.2 Industry Publications, Ultralights:

• Brooke, Rob, “Greatest Peril,” Ultralight Flying, (September 1993), pp. 42–43.

• Cannon, Mike, “Learning to Fly—Again,” Ultralight Flying, (June 1988), pg. 5.

• ____ “Keeping Cool in the Summer Time,” Ultralight Flying, (August 1988), pp. 16–17.

• Cartier, Kerry, “Power Failure on Take-off,” Ultralight Flying, (January 1988), pg. 25.

• Chapman, John, and Smith, Clark, “Preparing for the In-Flight Emergency,” Ultralight Flying, (March 1989), pg. 32.

• Demeter, Dennis, “Risk Management,” Ultralight Flying, (July 1993), pp. 48–49.

• ____ “Don’t Forget the Pre-flight,” Ultralight Flying, (May 1993), pp. 70–71.

• Gunnarson, Tom, “Getting into Ultralight Float Flying,” Ultralight Flying, (April 1989), pp. 27–29.

• Johnson, Don, “Getting the Most out of Flight Reviews,” Ultralight Flying, (March 1989), pp. 20–23.

• Loveman, Dave, “Problem-Solving the Cayuna 430R,” Ultralight Flying, (June 1988), pp. 24–25.

• Pagen, Dennis, “‘G’ forces and your Ultralight,” Ultralight Flying, (August 1989), pg. 37.

• ____ “Weight and Speed,” Ultralight Flying, (May 1989), pp. 20–21.

• Peghiny, Tom, “Effects of Sunlight on Polyester Sail Cloth,” Ultralight Foundation, Volume 2, Number 1, pp. 49–50, (1986).

C.3 Government Publications:

C.3.1 FAA Advisory Circulars (AC). Current editions of ACs are available at https://www.faa.gov/regulations_policies/advisory_circulars.

• AC 20-35, Tiedown Sense.

• AC 20-37, Aircraft Propeller Maintenance.

• AC 20-42, Hand Fire Extinguishers for Use in Aircraft.

• AC 20-105, Reciprocating Engine Power-Loss Accident Prevention and Trend Monitoring.

• AC 20-125, Water in Aviation Fuels.

• AC 23-8, Flight Test Guide for Certification of Part 23 Airplanes.

• AC 23-16, Powerplant Guide for Certification of Part 23 Airplanes and Airships.

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Appendix C C-4

• AC 90-109, Transition to Unfamiliar Aircraft.

• AC 90-116, Additional Pilot Program for Phase I Flight Test.

• AC 91-61, A Hazard in Aerobatics: Effects of G-Forces on Pilots.

• AC 103-6, Ultralight Vehicle Operations – Airports, Air Traffic Control, and Weather.

• AC 103-7, The Ultralight Vehicle.

C.3.2 FAA Handbooks. Current editions are available at https://www.faa.gov/regulations_policies/handbooks_manuals.

• Aeronautical Information Manual (AIM): Official Guide to Basic Flight Information and ATC Procedures.

• FAA-H-8083-3, Airplane Flying Handbook.

• FAA-H-8083-25, Pilot’s Handbook of Aeronautical Knowledge.

• FAA-H-8083-1, Aircraft Weight and Balance Handbook.

C.3.3 The FAA’s Civil Aerospace Medical Institute (CAMI) Aerospace Medical Education Division’s brochure titled “Carbon Monoxide: A Deadly Menace” is available at https://www.faa.gov/pilots/safety/pilotsafetybrochures/media/cobroforweb.pdf.

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Advisory Circular Feedback Form If you find an error in this AC, have recommendations for improving it, or have suggestions for new items/subjects to be added, you may let us know by contacting the Flight Standards Directives Management Officer at 9-AWA-AFB-120-Directives@faa.gov.

Subject: AC 90-89C, Amateur-Built Aircraft and Ultralight Flight Testing Handbook Date: _____________________ Please check all appropriate line items:

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