What is the Cessna L-19/O-1 Bird Dog?

The Cessna L-19/O-1 Bird Dog was the U.S. Army's primary liaison and observation aircraft from the Korean War through Vietnam. It was the first all-metal fixed-wing aircraft ordered by the U.S. Army after the Air Force separated in 1947. Light, slow, and highly maneuverable, it served in forward air control and artillery spotting roles throughout its career.

Does the cowl come with the kit?

No. The short kit is wood parts only. The fiberglass cowl is sold separately by Vailly Aviation and is available through Nick Ziroli Plans. The aluminum landing gear is also sold separately.

Kit Cutters Completion Guide

Vailly Aviation Giant-Scale Short Kit

88.5" L-19/O-1 Bird Dog

The U.S. Army's legendary liaison and observation aircraft — docile, versatile, and beautiful in giant scale.

Buy the Kit — $228.00 See Everything You Need

Wingspan

88.6 in

Length

58 in

Scale

1/5

Wing Area

1,003 sq in

Weight (AUW)

11–14 lb

Power

23–35cc gas

Skill

Intermediate

A Legend, Faithfully Cut

The Cessna L-19/O-1 Bird Dog was the U.S. Army's primary liaison and observation aircraft from the Korean War through Vietnam — the first all-metal fixed-wing aircraft ordered by the Army after the Air Force separated in 1947. Light, slow, and highly maneuverable, it served in forward air control and artillery spotting roles for over two decades. Vailly Aviation's 1/5 scale design captures that high-wing, honest silhouette with docile flight characteristics that make it one of the most approachable giant-scale builds available.

Kit Cutters supplies the precision laser-cut wood. This guide covers the rest: the honest, model-specific list of what you'll buy to complete it, with real sources for every part.

88.5-inch Vailly Aviation L-19 Bird Dog giant-scale RC plane in flight

What's in the Box?

Included in the Short Kit

Precision laser-cut wood parts only — ribs, formers, shaped parts
Two-piece wing rib set
Fuselage formers and shaped parts

Required Separately

Plans / building instructions (buy from Ziroli — copyright)
Spars, sheeting, and stick balsa
Engine, cowl, landing gear, covering, finishing, electronics
Fuel tank, prop, servos, hardware, hinges

Everything Else You Need to Complete This Kit

Model-specific, with real sources. Vailly Aviation specifies the accessories for this kit directly — the sources below follow that specification.

Power System

Gas

Vailly specifies 23–35cc gas. This is a lighter, more economical power class than the warbirds — the DA-35 or DLE-35 are proven choices that keep the finished weight in the 11–14 lb range.

Engine	23–35cc gas. DA-35 or DLE-35 popular choices for this weight class.	Desert Aircraft
Fuel tank	16–20 oz rectangle tank (plan spec)	Dubro
Prop	Size per engine and cowl clearance	Builder preference
Engine offset	0° right, 0° down (per plan)	Per plan
CG location	3.5" back from leading edge at fuselage	Per plan

Cowl

Vailly Aviation sells

L-19 fiberglass cowl — 1/5 scale

9" L · 5" H front · 7.5" H rear · 8" W front · 8" W rear. Order the 1/5 scale version.

Ziroli (Vailly)

Vailly Aviation's cowl and aluminum gear are available through Nick Ziroli Plans, who distributes Vailly accessories in the US. Specify the 1/5 scale version — Vailly also makes 1/4 and 1/3 scale Bird Dog cowls which are not compatible.

Landing Gear

Vailly Aviation sells

Aluminum gear struts	Formed aluminum main gear struts (plan spec) — 1/5 scale	Ziroli (Vailly)
Tail gear strut	Tail gear strut per plan	Secondary R/C Market
Main wheels	4"–4.5" diameter main wheels	Robart / Dubro
Tail wheel	1.5" tail wheel	Robart / Dubro

Servos

5+ channels

Flaps	2× 150–200 oz-in, metal gear, ball bearing (plan spec — large flaps, high torque required)	Builder preference
Ailerons	2× 90+ oz-in, ball bearing	Builder preference
Elevators	2× 90+ oz-in, ball bearing	Builder preference
Rudder	1× 120+ oz-in, ball bearing	Builder preference
Throttle	1× 50 oz-in, ball bearing	Builder preference

Note the high flap servo spec (150–200 oz-in MG BB) — the Bird Dog's full-span flaps deploy to 45° and require substantial torque. Don't underspec the flap servos.

Covering & Finishing

Covering	1 oz fiberglass cloth and resin, or Solartex cloth covering (plan spec)	Chief Aircraft / specialty
Vinyl graphics	L-19/O-1 Bird Dog graphics set	Callie Graphics

Hardware

Hinges	20× Dubro #257 flat hinges (plan spec)	Dubro
Control horns & linkages	Sized per plan	Specialty RC retailer

Detailed Specifications

Wingspan	88.6 in
Fuselage length	58 in
Scale	1/5 (2.4" = 1 ft)
Wing area	1,003 sq in
Weight (AUW)	11–14 lb
Wing loading	25–32 oz/sq ft
Power	23–35cc gas
Wing	Two-piece high-wing, with full-span flaps (45° down)
Gear	Fixed tailwheel — aluminum struts
Cowl length	9" · Front: 5" H · Rear: 7.5" H · Width: 8" front / 8" rear
CG	3.5" back from leading edge at fuselage
Min. radio channels	5+

Specs from Vailly Aviation's published Cessna L-19 1/5 scale plan specification, sold through Nick Ziroli Plans. Also available in 1/4 scale (108" span) and 1/3 scale — confirm you are ordering the 1/5 scale accessories.

Vailly Aviation

Vailly Aviation (Roy Vaillancourt) produces some of the most respected giant-scale observation and liaison aircraft plans in the RC community. The L-19 Bird Dog is available in three scales (1/5, 1/4, 1/3) and is known for docile flight characteristics and excellent plans quality. Plans and accessories are distributed in the US through Nick Ziroli Plans.

Plans distributed by Ziroli Plans · Plans must be purchased separately (copyright).

Get Vailly Plans

The Build Journey

The Bird Dog is one of the more approachable giant-scale builds — lighter, simpler, and more forgiving than the warbirds. Fixed gear, a conventional layout, and docile flight characteristics make it a good entry point for builders stepping up to giant scale. Treat these ranges as a rough sense of scope, not a fixed estimate.

Where a short kit saves you time

Vailly Aviation's plans show all structures drawn full size with full-size templates for all ribs, formers, and parts. A Kit Cutters short kit removes the entire cutting stage — your parts arrive precision laser-cut and labeled, so you start at assembly with a cleaner, more accurate fit.

Plans only (hand-cut)

You trace and cut every rib, former, and shaped part from raw stock using the plan templates, then build.

more time, lower part cost

Short kit (laser-cut)

Parts arrive cut and labeled. Skip straight to assembly with a cleaner, more accurate fit.

less time, cleaner fit

The four stages of assembly

Stage 1: Fuselage Assembly

The Bird Dog's distinctive boxy fuselage with its large greenhouse cabin windows.

Align and pin main fuselage formers
Build the cabin frame
Install firewall and engine mount
Fit tailwheel gear mounting

Stage 2: Wing Assembly

Two-piece high-wing with full-span flaps.

Build port and starboard wing panels
Install full-span flap hinges and linkages
Fit wing strut attachment points
Install aileron servos

Stage 3: Tail Assembly

Conventional tail group.

Build the horizontal stabilizer
Build elevator surfaces
Assemble fin and rudder
Install tail wheel assembly

Stage 4: Systems & Final Assembly

Engine, radio, covering, and final checks.

Install engine and cowl
Install aluminum main gear struts
Radio gear and covering
Verify CG at 3.5" from leading edge

Frequently Asked Questions

The short kit is laser-cut wood parts only. To complete it you'll also need the Vailly Aviation plans, spars and sheeting, a 23–35cc gas engine, fiberglass cowl, aluminum landing gear, covering, and finishing supplies. The "Everything Else You Need" section above lists each item with a source.

Vailly Aviation specifies 23–35cc gas for the 1/5 scale version. The DA-35 or DLE-35 are popular choices. The Bird Dog is a lighter, more docile model than the warbirds in this catalog — even the lower end of the engine range gives excellent performance.

Plans are purchased separately from Nick Ziroli Plans (ziroligiantscaleplans.com), who distributes Vailly Aviation plans in the US. The 1/5 scale L-19 plan is $40. Kit Cutters supplies the laser-cut wood; Ziroli supplies the plans and model-specific accessories including the cowl and aluminum gear.

Yes — it's one of the more approachable giant-scale builds in this catalog. Vailly describes it as having docile flight characteristics, and the fixed gear and conventional layout make it less complex than the warbirds. Experienced builders new to giant scale often use it as their entry point.

The Cessna L-19/O-1 Bird Dog was the U.S. Army's primary liaison and observation aircraft from the Korean War through Vietnam. It was the first all-metal fixed-wing aircraft ordered by the Army after the Air Force separated in 1947. Light, slow, and highly maneuverable, it served in forward air control and artillery spotting roles for over two decades.

No. The short kit is wood parts only. The fiberglass cowl is sold separately through Nick Ziroli Plans (Vailly Aviation). The aluminum landing gear struts are also sold separately. Specify the 1/5 scale versions when ordering.

The 88.5" version is 1/5 scale (23–35cc, 11–14 lb) and the 108" version is 1/4 scale (35–55cc, 18–24 lb). Both are Vailly Aviation designs. The 1/5 scale is the more economical, lighter build; the 1/4 scale has more presence in the air and suits higher-power setups. Accessories are not interchangeable between scales.

88.6" wingspan, 58" length, 1,003 sq in of wing area at 1/5 scale. Finished weight is 11–14 lb with a wing loading of 25–32 oz/sq ft. These figures come from Vailly Aviation's published L-19 1/5 scale specification.

Ready to Build Your L-19/O-1 Bird Dog?

Buy the 88.5" Bird Dog Kit — $228.00

Prices and availability are subject to change — verify on each vendor's site before ordering. Kit Cutters supplies laser-cut wood parts only; plans and accessories are sold by their respective vendors.

Premium laser-cut short kits for large-scale and giant-scale radio-controlled aircraft builders. USA-based quality craftsmanship for serious hobbyists.