The TowFLEXX® Advantage! Towing and maneuvering Aircraft with TowFLEXX® (powered by Flyer-Truck® ) is easy, much safer, and definitely the most advanced Method of handling Fixed Wing and Helicopter Aircraft.

1. TowFLEXX® 600 RC
Towbarless Electric Tug for Aircraft
up to 132,000 lbs / 60,000 kg MTOW
600 RC
Flexible, Safe, Efficient & Cost Effective
Best-In-Class Technology

2. Vehicle Drive System Electrical Motor System - Dual (2 x) High Torque Rotary Drive Gear Motor, AC 24V, 6 kW (8.16 HP) each Effective Power 12 kW
(16.32 HP) total, PMS (Permanent Magnet Synchronous) IEEE 1202, S2, NEMA IP54 / IP20
Motor Drive Control System Triple (3 x) Motor Speed Impulse Contact Control with integrated Diagnostics and Variable Speed Control System
Transmission Advanced two Multi-Speed Transmissions, high Output Torque
Steering RC Remote Control Technology, via Motor Control, extremely maneuverable and intelligently programmed. Steering is per-
formed through two independent electrical Motor controlled 360° Steering Wheels, and different Rotating Speed Signals directed
to both Processor-Controlled Main Drive Motors. These carefully control the torque proportionally to each of the Drive Wheels.
Professional Industrial-Grade Waterproof Remote Control to "Pilot" the ROTV's Movement and Actions, easy to use, incl. Fail-
safe Frequency Spread Spectrum Technology
Service Brake Magnetic Spring-applied Brake System 40Nm / 48V
Drive Tires Optimum Tread Depth Drive Tires for best Traction, 15x4 1/2-8 solid Full-Cushion Heavy-Duty Tires, and two (2 x) Heavy Duty
Puncture Proof Ball Bearing 8” (200 mm) Twin Castor Steering Wheels
Battery Set of advanced 600Ah rechargeable 48V highly reliable & robust Low-Maintenance Lead-Acid Battery Pack incl. Short Circuit
Protection. This Battery Pack is resistant to Corrosion, capable of high Discharge Rates, and has a very low Self-Discharge Rate
Battery Charger Advanced Timer Circuit HF Battery Charger for uninterrupted Service incl. Auto Shutdown Function, 120 V AC, 30A, 60Hz, with
Battery Level Indicator, fully integrated, incl. Cable (50Hz, 220/230V Configuration available)
GPU (Ground Power) GPU Connector / Female Plug (GPU Cable not included)
Nose Gear Lift Cradle with HDCS (Hydraulic Door
Closing System)
Universal patented Electrical / Hydraulic Wheel Soft Coupling & Lifting Aircraft Nose Gear Cradle with proprietary Wheel Size
Adjustment. Suitable for Dual (Twin) and Single Tire Nose Landing Gear. System includes Wheel Tracking & Bracket Mechanism,
Wheel Safety Holding Function, Rotable Closing Gates incl. Safety System, Hold Down Function for Light-Nosed Aircraft
Max Nose Gear Lifting Capacity (Pick-Up-Weight) 13,200 lbs. (6,000 kg)
Max Towing Capacity / Aircraft MTOW Designed and built for Aircraft up to max 132,000 lbs (60,000 kg) MTOW and suitable Nose Gear Configuration
Width of Wheel Opening at Nose Gear Lift Cradle 32” (800 mm)
Time to load & fix Aircraft in Seconds 15 Seconds
Electric Safety Features Dual E-Stop Safety Feature with Direct Battery Connector Switch
Working Light, Drive Light, Safety Lights Energy saving LED Illumination for the Coupling and Aircraft Interface Area, and two LED Drive Head Lights, Amber Hazard
Warning Light, Drive Operation Warning Light
Storage Compartments 2 open Storage Compartments (left & right)
Speed Loaded with Max Capacity In all Directions:
Slow Mode adjustable 0 - 1.90 m/hr (0 - 3 km/h)
Fast Mode adjustable 0 - 3.73 m/hr (0 - 6 km/h)
Battery Capacity / Service Time in Hours between
Charging
2 - 3 Days in Step depending on Workload and average Usage (4 to 5 Hours continuously at full Load)
Non-Stop Operation, approx. 13 Miles / 20 km (depending on Load & Aircraft Type)
Operating Temperature (Range from - to +) -15°C to +50°C
Operating Humidity (up to max Relative Humidity
in %)
Max 90% Relative Humidity. Can be operated in heavy Rain.
Construction Heavy Duty Chassis and Steel Construction with Welded Steel Plate and Polymers protected by Powder Primer and Top-Rated
Automotive High-Gloss Red or Silver Metallic Enamel Paint with High Quality protective Polyurethane Coating to prevent Rust,
Scratches and Corrosion. Custom Colors are optionally available. Sturdy, rugged, and durable Design for Commercial Use and
Applications. Built to last and superior to any other comparable Product
Standard Color Red or Silver Metallic / Grey
Overall Length 103.54” (2,630 mm)
Overall Width 75.99” (1,930 mm)
Overall Height 17.72” (450 mm)
Empty Weight 3,080 lbs (1,400 kg)
Available Options Additional LED Lights, Strobe Light, GPU Cable, Frame Extension, Military Configuration, Custom Color, Extreme Hot Ambient
and Extreme Cold Ambient Configurations, Nose Gear Oversteering Protection
All Technical Specifications are Subject to Change without Notice. TNA Aviation Technologies reserves the Right to make Changes, implement Improvements or to alter Specifications at any Time.
2
600 RC
Technical Data & Specifications

3. The most advanced Tug in it’s
Class, providing unmatched Flexi-
bility, higher Safety, fast ROI, and
most Cost-effective Operations.
3
TowFLEXX® 600 RC
Made for Professionals
 Revolutionary Multi-Axel
Steering System
 Actively 360° Steered
Axle Technology
 Pendulum Floating Axle
 Nose Gear Oversteering
Protection System (Option)
 On-The-Spot Turn Ability
 Directional Stability

4. The TowFLEXX®
Advantage! Towing and maneuvering Aircraft with Tow-
FLEXX®
(powered by Flyer-Truck®
) is easy, much safer, and definitely the most
advanced Method of handling Fixed Wing and Helicopter Aircraft.
Turning the ROTV, turning the nose gear, and
moving the aircraft are three different actions.
The unique TowFLEXX®
360° technology feature
makes the difference. Overall this results in much
less space requirements and elevates the hangar
and apron utilization.
Exit Path
required
Conventional
Tow Tug
with Towbar
Easy
Exit Path
The conventional method of hangar utilization. The very same hangar utilizing
The hangar is under-utilized and not used at full
capacity. The hangar owner is losing revenue.
Thanks to TowFLEXX®
, hangar utilization and
revenue can be increased up to 40%.
Our advanced ROTV's signifi-
cantly increase the number
of aircraft you can place in
any hangar. The highly flexi-
ble and versatile towing
equipment can create up to
40% additional hangar space
(in average 35% depending
on the mix of aircraft), gener-
ating additional revenue for
the FBO or hangar owner /
operator. Irrespective of for-
ward or reverse motion, our
ROTV's will always be the un-
matched tool and solution to
create real additional space
inside the hangar.
Underutilized
Hangar Space
4

5. PerimeterFence
PerimeterFence
PerimeterFence
Moving an aircraft the conventional
way with a tug and towbar, or a
traditional towbarless tug, requires
a lot of space. In order to steer the
aircraft considerable movement is
required. Turning the nose gear can
only be achieved by moving the air-
craft forward or back. Extreme cau-
tion is required to prevent nose gear
oversteering and to avoid damage to
the sensitive nose wheel landing
gear. The aircraft must be moved
several yards before the nose gear
can be turned and to steer in a new
direction. This conventional method
requires significant space.
Example 1
with Conventional
Tug
Example 2
with
Example 3
with
+ 75%+ 20%
TowFLEXX®
ROTV’s (Remote Operated Tug Vehicle’s) provide many Advantages.
One major Benefit is the Ability to generate additional Parking & Hangar Space.
Unmatched flexibility thanks to the revolutionary and proprietary
360° turn feature. You can park and position aircraft by utilizing
available space that’s not reachable with a conventional tug.
Area required to
turn an aircraft 90°
with a conventional
tow bar & tug
+40 +75Inside
Hangars
Outside
Areas
Space Utilization Potential5

6. The TowFLEXX®
Difference! Thanks to the
unique 4-wheel 360° steering and drive control
technology, the advanced TowFLEXX®
600 RC
can literally turn any aircraft on the spot.
That’s highly innovative, provides more space,
additional revenue for the operator, and is un-
matched compared to any other product in the
market.
TowFLEXX®
ROTV’s (Remote Operated Tug Vehicle’s) are more flexible and
simultaneously protect your Aircraft like no other Product in this Category.
Operating in tight areas, and generating addi-
tional hangar space is the hallmark of Tow-
FLEXX®
. Operating conventional tow tractors
with towbar, or conventional towbarless tugs is
cumbersome and time consuming.
Reaching corners or parking an aircraft against
a wall is impossible with those old technolo-
gies. Conventional tugs also require significant
room for an exit path.
HangarWall
Conventional Tow Tug with Towbar
Towbarless Tug
Exit Path
Exit Path
Exit Path
Additional
Hangar Space
HangarWallHangarWallTowFLEXX®
is providing unmatched flexibil-
ity and generates additional hangar space.
Area required to
turn an aircraft 90°
or 360° with
6
Unique and “best-in-class”. The smart 360° steering technology compen-
sates rotational resistance and equalizes transverse forces. No gimbal
mounted platform and no hydraulic compensators are required.
360°
360°

7. 7
 Universal Soft-Coupling
Cradle
 HDCS Hydraulic Closing
System
 Suitable for Dual (Twin)
and Single Tire Nose
Gears
TowFLEXX® 600 RC
Best-In-Class Technology
TowFLEXX®
Remote Operated Tug Vehicle’s are the most advanced semi-robotic Tow
Tugs in its Class, providing unmatched Flexibility, more Precision, and higher Safety.

8. TowFLEXX®
ROTV (Remote Operated Tug Vehicle’s) are designed for easy Operations.
With just a few easy Steps the Aircraft can be engaged, secured, lifted and towed.
STEP Capturing & Releasing the Nose Wheel
STEP Securing the Nose Wheel
STEP Towing the Aircraft
 The Engagement Process is initiated by
activating a simple Command via the Re-
mote Control
 Drive the ROTV towards the Nose Wheel
 Stop when the Wheel is inside the Cradle
STEP Closing & Opening the Gate
 The HDCS Gate closes and the Nose
Wheel (Twin or Single Tire) will be
locked into Position
 The same Process in Reverse when the
Nose Wheel is released
 The Wheel Safety Bracket moves into
Position and automatically adjusts for
different Wheel Sizes
 The Nose Wheel is now completely
secured and the Cradle lifts up raising
the Nose Gear
 The entire Process of Capturing the
Nose Wheel is completed after approx.
15 Seconds
 Now the Operator can move and maneu-
ver the Aircraft effortless, safely and
quickly
8

9. Dimensions & Weights
9
Save Time, Money and Effort
with TowFLEXX®
103.55” (2,630 mm)
75.99” (1,930 mm)
103.55” (2,630 mm)
31.50”(800mm)
75.99”(1,930mm)
17.72”(450mm)
20.28”
(515mm)
16.30”
(415mm)
Empty Weight: 3,080 lbs (1,400 kg)
Packing & Pallet: 561 lbs (255 kg) approx.
Shipping Weight: 3,641 lbs (1,655 kg) approx.

10. 10
600 RC
Durable & Extensively Tested
Optimum Tread
Depth Tires for best
Traction
Wheel Safety
Holding Function
Hydraulic Door /
Gate Closing Sys-
tem HDCS) with
Safe Lock
Electrical Systems
& Hydraulics
Compartment
LED Cradle Work
Lights
Unique Universal Electrical / Hydraulic
Soft Coupling & Aircraft Nose Gear
Lifting Cradle with Wheel Size Adjust-
ment and Safety Lock Functions
Electrical Systems &
Hydraulic Compartment
Safety Bumper
Bar
E-Stop
E-Stop
Drive Direction
Indicator
LED Work Light
Heavy Duty Twin Castor
360° Steering Wheels
Integrated
Battery Charger
Master Key
Battery Level
Indicator
with Hour Meter
Charging Indicator
Battery Compartment
“Right”
Battery Compartment
“Left”
Safety Bumper Bar
Steering Wheel
Electric Motor & Robust Multi-
Speed Differential
Optimum Tread
Depth Tires for
best Traction
GPU Connector

11. TowFLEXX® 600 RC
for Military Applications
TowFLEXX®
ROTV’s (Remote Operated Tug Vehicle’s) are perfectly suited for
Military Applications, both On-Shore on Base, and Off-Shore on Navy Vessels.
11

12. Our aircraft moving equipment and towbarless tugs are designed by pilots, and engineers who understand the importance of being able
to guide an aircraft around a hanger and airfield with absolute precision. FlyerTruck®
tow equipment and ground handling systems are
advanced German engineered products, applying latest technologies, unmatched quality and precision. Our ultra modern high-tech fac-
tory is the best example of cost-effective high-quality manufacturing. It is one of the most modern factory floors of its kind, like a Swiss
watch, with the same level of precision. A high degree of automation with a multitude of other advanced manufacturing technologies,
including laser cutting, innovative combined bonding and welding. The factory follows production methods that sets the standard for
world-class manufacturing facilities since 1953.
Our products are designed and manufactured in compliance with
United States UL, SAE International technical standards and best
practices, including ARP recommended guidelines, as well as all
applicable ASME and ANSI standards and codes. Where applica-
ble our products also conform with OSHA standards and safety
rules as well as applicable mechanical engineering standards and
recommended practices. Flyer-Truck®
is in compliance with all
applicable ISO standards.
ISO 9001 - We manufacture our Aircraft Tow Vehi-
cles to the highest standards in the industry. We
are in compliance with: DIN 15641, 15018, 18800,
4112, 4132, 1055, 10025, 1543, 1013, 17210, 10149
EN 12895, 61000, 292, 418, 954-1, 95, 1050, 60-204,
60-529, 1175, 18349, 1915, PR-12312-7, 51000 (SAE
J551 equivalent)
TNA - Aviation Technologies
A Division of Turwitt, Nielen & Associates, P.A.
4475 US Hwy 1 South, Suite 202 - Plaza South
St. Augustine, FL 32086 - USA
Tel.: +1-904-217-0496
E-Mail: info@tunias.com
Website: http://www.tna-aviation.com 12