AD 2026-22-13 adds the Lycoming O-320; old LODAs end Dec. 1; what 2,455 panel designs hold

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Hangar Debrief

Issue 4 · November 13, 2026

AD 2026-22-13 replaces the Lycoming piston pin AD and adds the O-320, IO-320 and O-435 families

AD 2026-22-13, effective Nov. 24, 2026, replaces AD 2026-17-10 and adds the O-320, IO-320 and O-435 families to the O-235, O-540 and IO-540, with no serial number list: it reaches any listed engine with P/N LW-13445 piston pins made Jan. 7, 2021, to Dec. 15, 2025, or of unknown date. Most of those engines get an oil change and a check of the filter and screens for metal within 5 hours after Nov. 24, and the pins are replaced on a schedule set by their date and hours, some before further flight. The dash numbers matter (the O-320-H2AD is not in the AD's table), and the FAA takes comments until Dec. 24.

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Design & Build

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Photo: Vickers Aircraft.

Vickers Aircraft USA announces the FAST4, a planned four-seat carbon-fiber single with a 235-knot cruise target

Vickers Aircraft USA, maker of the WAVE amphibian, has announced the FAST4, a planned low-wing, all-carbon-fiber four-seater with folding wings and a BRS parachute, aimed at 235 knots true, 1,300 nautical miles with four adults and full fuel, and a 1,520-pound useful load. Every figure is a target: Vickers names no engine, price or first-flight date, and its own posts report no WAVE delivered to a customer yet.

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Photo: ZLEA, CC BY-SA 4.0, via Wikimedia Commons.

EAA will build a Zenith CH 750 Super Cruzer at AirVenture 2027, July 26 to Aug. 1

EAA's fourth One Week Wonder will turn a Zenith CH 750 Super Cruzer kit into a finished airplane at Oshkosh, starting on AirVenture's opening day, July 26, 2027, with Aug. 1 as the goal. Visitors pull rivets that go in the builders' log. Experienced homebuilders and EAA's Homebuilding Ambassadors can sign up now.

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Photo: Jonathan Payne, CC BY-SA 2.0, via Wikimedia Commons.

BRC Aircraft of Alberta buys Murphy Aircraft's parts stock; parts sales are planned for 2027

BRC Aircraft, a division of The Banff Rail Co. of Claresholm, Alberta, says it bought Murphy Aircraft's remaining parts and some tooling, but not the drawings or the right to build the designs. Parts sales are planned for 2027, as is, without warranty and without Murphy's service bulletins. Owners must register with proof of ownership first; the registration form isn't live yet.

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Avionics & Electrical

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What builders are putting in their panels in 2026: 2,455 designs counted

Of 2,455 instrument panels designed in Hangar Flying's Panel Designer this year, Garmin's G3X Touch, Dynon's SkyView HDX and Garmin's AXIS each appear in roughly one design in seven. AXIS got there less than four months after Garmin announced it. The Garmin G5 is the most-placed instrument of all, in 783 designs.

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Photo: Matti Blume, CC BY-SA 4.0, via Wikimedia Commons.

EFISCharts: a $39 and $49 a year chart service for Dynon and AFS displays

EFISCharts, launched Oct. 22, sells FAA charts for Dynon SkyView, Dynon D-series and AFS displays at $39 a year for VFR and $49 with IFR, against $119 for the Seattle Avionics charts Dynon offers. It adds satellite-picture diagrams for 3,300 airports the FAA doesn't draw. Its own terms say the charts aren't for primary navigation.

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Test & Fly

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Photo: ZLEA, CC BY-SA 4.0, via Wikimedia Commons.

LODAs issued under 14 CFR 91.319(h) end December 1, 2026; new ones come under 91.326

Every letter of deviation authority issued under the old 14 CFR 91.319(h) ends Dec. 1, 2026, and FAA inspectors may not renew or amend one. An instructor who supplies both the experimental airplane and the training needs a new LODA under 91.326(b), whose application goes in at least 60 days before the operations. An owner who hires an instructor to train in the owner's own airplane, with nobody paid for the airplane's use, still needs none.

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Photo: Ktkvtsh, CC BY 4.0, via Wikimedia Commons.

The North American T-6 Texan, the "Pilot Maker": a 1935 trainer flown by more than 40 countries and still flying today

The T-6 began as the Army's BT-9 basic trainer in 1935 and became the advanced trainer of the Army, the Navy and the Royal Air Force in the Second World War. The Smithsonian puts production at very close to 15,000; the Navy counts more than 17,000 delivered. It came back as the Navy's basic trainer in the 1950s, and private owners fly it today.

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Upgrade & Maintain

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Photo: ZLEA, CC BY-SA 4.0, via Wikimedia Commons.

The A&P mechanic and the inspection authorization: what each may sign, and how each is earned

Under 14 CFR part 65, subpart D, an A&P mechanic may do and approve most maintenance and the 100-hour inspection on a certificated airplane. The annual inspection and the return to service after a major repair or major alteration need an inspection authorization, which expires on March 31 of every odd-numbered year, next in 2027. An amateur-built airplane's condition inspection does not need an IA.

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Photo: Tomás Del Coro, CC BY-SA 2.0, via Wikimedia Commons.

Selling an airplane: the FAA paperwork, the records that go with it, and the payment scams aimed at sellers

A seller signs the bill of sale, hands over the airworthiness certificate and the maintenance records part 91 requires, and tells the FAA Registry within 21 days. The risk is the money: the FTC warns of buyers who overpay by check and ask for the difference back. Payment should be cleared, or held by an escrow agent the seller chose, before the logbooks leave.

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Tips & Tools

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Photo: Alan Wilson, CC BY-SA 2.0, via Wikimedia Commons.

Dimpling aluminum skins: setting up a C-frame, a DRDT-2, a rivet squeezer and close-quarter dies

Cleaveland Tool's instruction sheets set a C-frame's male die 1/16 inch above the table and call for two or three light blows, since one hard blow leaves rings around the dimple. A squeezer is set with the dies touching and about an inch between the handles, the lever-driven DRDT-2 reaches 22 inches in on aluminum up to 0.040 inch, and close-quarter dies are for holes nothing else reaches.

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Directives & Bulletins

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Photo: Tomás Del Coro, CC BY-SA 4.0, via Wikimedia Commons.

A new FAA rule lets single-engine turbine airplanes use a maker's inspection program and rewrites 91.405

From January 11, 2027, the owner of a single-engine turbine airplane may inspect it under the manufacturer's program or an FAA-approved owner's program instead of the annual. The same FAA rule rewrites 14 CFR 91.405 on discrepancies and inoperative equipment and, as written, takes experimental and light-sport aircraft out of 91.405 as well as 91.409.

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New on Hangar Flying

Type an instrument's position in the Panel Designer: select an instrument, click the X or Y beside Instrument center, and type where its center goes, in inches from the center of the panel.
Measure point to point in the Panel Designer: turn on Measure, check Point to point, and click two points on the panel for the distance across and up and down.
Ready-made add-on pieces: the Add-on panel tool now places a throttle bracket or a subpanel as wide as your panel.
Pilot Toolkit is in the App Store: more than 75 flight calculators for iPhone and iPad, airport weather in the flight-category colors, and NOTAMs.
Directive Search by engine model: type an engine model such as IO-360-B1A and the page lists the engine directives that may reach it.

Everything new on Hangar Flying

For sale

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2017 Sport Performance Panther LS, $60,000

An experimental amateur-built Panther LS based at Lake Anna (7W4), Bumpass, Virginia, with a Lycoming O-320, a Dynon D100 EFIS and D10-EMS, a Garmin GTR200 radio and ADS-B in and out. The seller is selling to make hangar space for an RV-10 build; the condition inspection was done in March 2026.

See the listing

Selling an aircraft or a hangar? List it on the Hangar Flying Marketplace. There is no charge to list until January 1, 2027.

For information only. Not approved data. Follow the manufacturer's instructions and the regulations.

Hangar Debrief is published by Whiskey Victor LLC, 790 E Kiowa Ave #314, Elizabeth, CO 80107.

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