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Udet Flugzeubau GmbH
U-1 / U-2
U-4
U-5
U-6
U-7 Kolibri
U-8 Limousine 
U.10
U-11 Kondor
U.12 Flamingo

Uetz Flugzeugbau
U2V
U4M Pelikan

UFM of Kentucky
Easy Riser
Icarus II / Aeroplane

Ukrovozdukhput / Ukranian Air Transport Co
K-4

 

Microfeil-Trike

 

UL-JIH
Fascination F100

 

ULPower Aero Engines 
UL260 
UL350
UL390
UL520

Ultavia Aircraft
Ultavia

 

Ultimate
10-200
10-300

Ultimate Flying Object / UFO
Helithruster

Ultimate Flite Designs
Super Jetwing II ATV

Ultra-Classics
Bearcat

Ultracraft
Calypso

Ultra Efficient Products
Invader

 

Ultra-Fab
Sundowner Convertible

Ultraflight Manufacturing
Sparrowhawk
Lazair

 

Ultra Flight Systems (UFS)
Trike 215

Ultraland

Ultraleger Industria Aeronautica Ltda
AE-206 Mistral

Ultraleicht-Fluggerätebau
Wildente

Ultralight Aircraft
Sno-Bird

Ultra Light Aircraft Corp (ULAC)
X-99
X-77
Sadler Vampire

Ultralight Aircraft Industries
Wombat / Bunyip

Ultralight-Aviation
Kiebitz

Ultralight Engineering
Astra

Ultralight Flight
Mirage
Phantom

Ultralight Aviation Systems / UAS
Storm Buggy

Ultralight Flying Machines

Ultralight Soaring Inc
Magnum
Wizard

 

 

Ultramagic sa / Ultramagic Balloons
H Series
M series
MV series / The Racer
N series
S series
T series
V series
Z series
Tekno 50
The Solo
The Duo
Special Shapes

 

Ultra Sail Aviation
Cloud Dancer

Ultrasports
Tri-Pacer
Panther
RB1
Puma

 

Ultravia Aero Inc
Pelican Club
Le Pelican
Super Pelican

Umbaugh Aircraft
18A

 

UNC Helicopter
(Bell) Ultra Huey

Unique Paragliders
Basic
Crazy
Level
XT

Unis, Obchodni Spol, Sro
NA 40-Bongo

United Aerospace Technologies Ltd
Ranger
Super Ranger
Twin Ranger

United Aircraft Corp / UAC

 

United Eastern Aeroplane Corp

United Helicopters
C4 Commuter
Flying Frame
J-5
UH-12

United States Aircraft Corp

United States Army Engineering Division
FVL-8
BVL-12
USD-9
XB-1
Messenger M-1
MAT
R-3
VCP-1

Univair Aircraft Corp

 

Uppercu-Burnelli Aircraft Corp
Model 101
RB-2
CU-16
UB-20

Unikomtrans
Unikomtrans 11

Universal Dynamics Research and Development
Defiant 300
Defiant 500

URMV-3
IAR 821 / IAR IAR 821
IAR 823

Ursinus, Oscar
Glider

 

US Aviation
Cumulus
SuperFloater
CAVU

Usinage Valmecot Inc
Sea-Bow

US Light Aircraft
Hornet