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Zefting Aviation — DA-62 edition
Zefting Aviation
Schedule Service
Services

Airframe Modifications.

STC installations from a vetted network of vendors — vortex generators, gross-weight increases, custom interiors, backcountry gear, and more. Tell us what you want to change about your airplane; we'll tell you honestly what makes sense.

Our approach

Mods we won't sell you on.

We do STC installs from a wide network of vetted vendors — but we won't install a mod just because it's available. If you bring us an idea, we'll tell you:

  • What it actually changes about the airplane (performance, useful load, handling, fuel burn)
  • What it costs to install and what the downtime is
  • What it does to resale
  • Whether it's worth it for your specific mission

If the answer is "not really," we'll say so.

STCs We've Installed

Mods we know how to do well.

A non-exhaustive list of common STCs on our schedule. If yours isn't here, ask — chances are we've done it, or can confirm whether it's a fit for your airplane in a phone call.

Many singles & twins

Micro AeroDynamics VG Kits

Spanwise vortex generators that lower stall speed by ~9%, sharpen low-speed control, and shorten takeoff/landing distance. ~75 STCs across ~750 aircraft models — including Beechcraft Bonanza/Baron/King Air, Diamond DA42, and most Cessna + Piper piston singles and twins.

microaero.com →
Piper PA-31 Navajo · Chieftain · Mojave

BLR Aerospace Gross-Weight VG Kit

86 vortex generators plus 4 nacelle strakes that lower Vmc enough to FAA-approve a gross-weight increase — meaningful payload back on the books for Chieftain operators. Also approved on Beech Duke and other twins.

blraerospace.com →
Piper PA-31 · PA-31T · PA-42

ARC Inboard Gear Door Removal

STC SA00555DE removes the troublesome inboard main-gear doors and replaces them with a fixed aerodynamic fairing. Raises gear-extension speed to 153 KIAS, eliminates the recurring gear-door hinge AD, and ends in-flight door-sag worries — no cruise-speed penalty.

arcmods.com →
Cessna 170 / 172 / 182 / 185 / 206 / 207

Selkirk Aviation Interiors

Fiberglass interior panels, headliners, glareshields, extended baggage kits, and composite cowlings — replaces brittle OEM plastic with lightweight, durable parts. PMA + STC approved. Based in Coeur d'Alene, ID.

selkirk-aviation.com →
Cessna 170 / 172 / 175 / 180 / 182 / 185

LakeVue Aeronautics Folding Seats

STC'd folding jump seats — 5.5 lb each vs. ~29 lb for the OEM bench. Stow flat against the fuselage to free up cargo space; remove with two bolts. Originally the BAS folding seat design, in continuous production since 1979.

lakevueaeronautics.com →
Cessna 150–207 nosewheel singles

Airglas Heavy-Duty Nose Fork

Wider, stronger nose fork that clears tires up to 8.50×6 for backcountry and off-airport ops. STC SA02069AK (AML). Adds real backcountry capability to a tri-gear Cessna.

airglas.com →
Super Cub · C-170/180/185 · Husky · Maule

Alaskan Bushwheel Tires + Tailwheel

Low-pressure 26–35" main tires plus the Baby Bushwheel tailwheel for gravel, sand, tundra, and river-bar operations. STC-approved across most popular taildraggers in the backcountry mission.

mcfarlanealaska.com →
Cessna 180 / 185 Skywagon

McFarlane Alaska Tailspring Assembly

STC'd Skywagon tailspring with an increased arch that reduces tailwheel shimmy — cleaner ground handling and longer life for backcountry-flown 180s and 185s. Complete kit, less the tailwheel itself.

mcfarlanealaska.com →
Beechcraft Bonanza & Baron

D'Shannon Aviation Mods

Tip tanks, gross-weight increases, baffles, cowling mods, and other Bonanza/Baron-specific upgrades. Long-standing relationship — we do D'Shannon installs to factory spec with full STC paperwork.

dshannon-aviation.com →
Cessna 172 / 180 / 182 / 185 / 205 / 206 / 210

Texas Skyways Engine Upgrades

STC'd higher-horsepower engine conversions for the Cessna line — shorter takeoff rolls and faster climb without airframe modifications. Engines, propellers, and supporting components engineered as a system. Based in Boerne, TX.

txskyways.com →
Cessna 414 / 421 · Bonanza · Baron · SR22

RAM Aircraft Engine Overhauls + STCs

Continental 520 / 550 family engine overhauls to new-parts limits, balanced to RAM STC specs, plus performance upgrades for the twin Cessnas, Beech piston twins, Bonanza, and SR22. Backed by RAM's Legendary Engine warranty. Waco, TX since 1976.

ramaircraft.com →

…and more

Avionics installs, custom panel work, owner-driven one-offs. If your STC isn't listed, ask us.

Ask about a mod →
Vendors We Work With
D'Shannon Aviation
…and more
How it works

Four steps.

STEP 1

Conversation

What are you trying to change about your airplane? What's the use case?

STEP 2

Honest assessment

What we'd recommend, what we'd talk you out of, and why.

STEP 3

Quote + lead time

Written. With line items, expected install duration, and downtime estimate.

STEP 4

Install + paperwork

STC documentation, weight-and-balance update, logbook entry.

Have a mod in mind?

Bring us your idea. Even if we don't end up doing the install, you'll get an honest read on whether it's worth doing.

Discuss a Mod