For FSX / Prepar3D Published by Lionheart Creations
Reviewed by Andrew Godden
The Learjet is one of the most iconic aircraft in the history of
aviation. With its distinctive, sleek style, the high pitched whine
of its engines, and the wingtip fuel tanks, it has captured the
imagination of generations. As a youth, I would spend countless
hours at the local airport, fascinated by the beauty of the Learjet.
With camera in hand and no airport security to speak of back then, I
would spend hours on the ramp, shooting off rolls of 35 mm black and
white film and capturing the Learjet from every conceivable angle.
Commencing with the Learjet 23 in 1964, and being part of the
generation of aircraft responsible for creating a completely new
market for fast and efficient corporate / executive air transport,
the Learjet has been synonymous with the business jet aircraft
category for over 50 years. With some 14 models produced and two
still in current production, the Learjet is destined to continue
Different models of the Learjet have been included in Microsoft
Flight Simulator since the release of Flight Simulator 3.0 in 1988.
Over the years, there have been a variety of freeware versions of
the Learjet available, however, the aircraft has never been a major
focus for payware developers. Lionheart Creations have had a
wonderful focus on creating both unique and iconic aircraft and Bill
Ortis and his team now add the Learjet 24B to this range.
The Learjet 24B is a twin turbojet engine, high speed, business jet.
With a crew of two and seating for five passengers in the typical
configuration (up to six passengers in a maximum seating
configuration), it is powered by two General Electric CJ610-6
Developed as a successor to the Learjet 23, improvements in the
Learjet 24B included: more powerful engines, increased cabin
pressurisation, a fire extinguishing system for the engines, and
auxiliary fuel in the wingtip fuel tanks. With the first flight
taking place in January 1966, the Learjet 24B was introduced into
service in November 1966 and saw a production run of 259 aircraft
across six variants until the end of production in 1977.
Availability and Installation
The Lionheart Creations Learjet 24B is currently available direct
from the Lionheart Creations web site and Lionheart Creations
resellers as a 'download only' product (some resellers also offer a
master back-up CD / DVD service for a minor additional cost). It is
priced at US$34.95, or the equivalent on currency cross rates. The
download file size is 555MB and it requires 1.2GB of HDD space for
installation. An ‘activation key' is issued on purchase and is used
during installation and the installation process is intuitive and
The model features listed by Lionheart Creations for the Learjet 24B
• ultra-high definition quality
textures (4096 x 4096) on the exterior and some interior textures;
• super detailed instrument panel
with almost all gauges operational;
• new code technology features hold
down starter switches that flip upwards after start-up for
'generator charge' mode;
• high detail interior features 3ds
Max shading technology for subtle shading and highlights;
• panel lights, and forward and rear
cabin dome lights are on separate circuits and light circuit
• passenger and cargo versions with
the ability to hide the passengers and cargo;
• autopilot system replicates the
capabilities of systems of the era;
• spoilers cause a plume of vapour
trails when extended at speed; and
• numerous alarm sounds for 'gear
up', 'engine fire', 'overspeed', and many more events.
Note: The Learjet 24B is not compatible with DX10 mode in FSX.
Learjet 24B is so iconic and distinctive and Lionheart Creations
have accurately captured the beautifully classic lines of the 24B.
Learjet 24B is distinguished by its small, sleek size, and classic
Learjet elongated nose, windshield, cabin access door, and wingtip
fuel tanks. Not unlike other Learjet models, the 24B is reflective
of the classic Learjet lines. For quality and attention to detail,
Lionheart Creations have done a very good job modelling the 24B. The
ultra-high definition textures are crisp and the lines are sharp,
though the portrayal of some of the surface textures appeared
somewhat artificial. A comparative review of photographs of real
world aircraft to the Lionheart Creations rendition reveal the
exterior shape and dimensions to be very accurate and an excellent
representation of the real world aircraft. There were some minor
noted variations, however, these are considered to be related to
real world production variations or artistic licence on the part of
The Pointy End
Wingtip Fuel Tank Detail
Lionheart Creations have modelled the interior in both a
corporate transport and cargo configuration. The cockpit represents
the layout typical of the aircraft and the era, as does the cabin
area. The textures on the interior are good, but, in some instances,
provide an ordinary look and feel. There is also a noted problem
with the flash of the beacon light under the fuselage showing
through in the cabin. Nonetheless, a comparative review of
photographs of real world aircraft to the Lionheart Creations
rendition reveal the interior shape and dimensions to be accurate
and, overall, the interior is a reasonable representation of the
real world aircraft. Taking into account the various avionics suite
fit out options available, the panel layout was reflective of
researched real world panel layouts. Any noted variations were minor
are considered to be related to real world production variations or
a degree of artistic licence on the part of the developer.
With the exception of the Garmin GNS 500 GPS unit, the flight
instruments are totally analogue. The instrument panel is reasonably
accurate, allowing for fit out variations and some artistic licence,
and instruments are clear and easy to read. Naturally, at lower zoom
ranges, some of the clarity and detail is lost on the smaller
instruments and panel labelling and these can be difficult to read,
however, various alternative cockpit camera views are available to
provide more detailed views. There was a noted alignment issue with
a number of the annunciator lights on the annunciator panel and this
is somewhat visually distracting. Some aspects of the panel exhibit
some functional latitude, compared to reality, in the interests of
'fun flying' and this is taken into account in this review. The
various instruments are fully covered in the supplied manual and are
deserving of a read at some stage. Various 2D pop-up screens are
also available to supplement the virtual cockpit views, including a
'Flight and System Notes' clipboard which provides aircraft
specification data and procedural checklists. I encountered problems
when scrolling the pages on the pop-up clipboard in that after the
first few pages it would return to the front page and stop
scrolling. After receiving feedback from the Lionheart Creations,
the clipboard has extra 'blank' pages which, if you continue to
scroll beyond page five, gives the impression of it having frozen.
To avoid any problems, simply scroll forward and back within the
five page limit. Lionheart Creations are aware of this and hopefully
a subsequent service pack will correct this.
Radios & Engine Instruments
Fuel System & Autopilot
The autopilot system and fuel system, and their respective
operations, are both replicated very nicely. Some aspects of the
autopilot system, again, exhibit some functional latitude, compared
to reality, in the interests of 'fun flying'. The fuel system
includes fuel dumping and manual transfer operations and requires
attention in flight to avoid a possible fuel starvation incident.
The operation of the fuel system can appear quirky and can take some
getting used to. READ THE MANUAL! As stated in the manual, you
should never land with fuel in the wingtip fuel tanks. Any attempt
to do so, will present a warning on 'short finals'. BE WARNED! The
link between the operation of the fuel system switches on the 2D
pop-up and the Virtual Cockpit presented inconsistent anomalies in
the operation of the fuel dump process and the safety covers on the
wingtip fuel tank dump switches do not deactivate the dump switches
when closed. Furthermore, during a fuel dumping procedure, once the
wingtip fuel tanks are empty, fuel vapour trails continue to display
in the external views. Basically, whenever you activate the fuel
dump switches, regardless of tank condition, a fuel vapour trail is
displayed. Note: Due to the programming associated with this model,
you cannot perform a 'cold and dark' start-up using another
This is well explained in the manual and 'cold and
dark' start-up files are available, so, again, READ THE MANUAL!
Models and Liveries.
There are two models, passenger and cargo, and eight individual
liveries (a selection only shown below) provided with the Lionheart
Creations Learjet 24B, each having a unique aircraft registration
number. A paint kit for aircraft painting enthusiasts is available
from the Lionheart Creations web site.
Animations, Lighting and Sounds
The animations of the primary and secondary control surfaces and
other moving elements on the Lionheart Creations Learjet 24B are all
modelled faithfully and include: :
• primary control surfaces – ailerons, elevator and rudder;
• secondary control surfaces – flaps
• others – retractable
gear, rolling wheels, and cabin door open / close; and
• various static ground elements.
Parked Up - Exterior
Parked Up - Interior
The lighting and lighting effects on the Learjet 24B are a good
representation of the real world aircraft. In particular, the
interior lighting control, which provides detailed night light
effects for the instrument panel, cockpit, and the cabin are good
and is a reasonable representation of the night lighting seen in
photographs of real world aircraft.
Cockpit and Cabin Flood Lighting
Cabin Flood Lighting
The sounds of the 24B are also quite good and are
representative of the real world aircraft. The high pitched whine of
the engines, in particular, is replicated very nicely.
General Characteristics and Performance Specifications
The general characteristics and performance specifications for the
Learjet 24B are provided in the table. This is based on data from
the official Learjet 24B Pilot Operating Handbook, data provided by
Lionheart Creations, and general research sources. Some of this data
varies between sources and also may be an approximation due to
variances in data and the specific aircraft modelled by Lionheart
A specific Test Flight was conducted from Merimbula (YMER) to
Esperance (YESP) to test the flight performance of the Lionheart
Creations Learjet 24B. The flight was conducted in clear weather with
a full fuel load and the aircraft at maximum take-off weight (MTOW). A
cruise altitude of FL450 was adopted and the route distance was
approximately 1,384 nm. The route was particularly chosen to provide a
basis upon which to test the range characteristics of the Learjet 24B.
Like most aircraft of this type, adjustments must be made to fuel /
pax loading to remain within the MTOW limitations.
The aircraft was easy to taxi. With a flaps setting of 'Flaps 1'
(8°), aircraft rotation occurred at approximately 120 knots indicated
air speed (KIAS) and the aircraft easily maintained the high rate of
climb it is renowned for, and the pure power and speed of the Learjet
24B was evident in the initial climb phase. Required adjustments to
the rate of climb were necessary at higher altitudes until the
aircraft was established at the cruise altitude.
During cruise, an engine RPM setting of 80% was established. This
cruise setting produced an average speed of approximately Mach 0.85,
(490 KTAS, 235 KIAS), a fuel flow rate of approximately 1,500 lb/h,
and an endurance consistent with the range characteristics of the
aircraft. There was a noted variance in speed performance compared to
the performance specifications provided by Lionheart Creations. The
performance specifications indicate a cruise speed of 260 kts at
FL450. Attaining this speed is not possible without exceeding the
maximum speed of Mach 0.87. The Test Flight confirms the modelling of
the aircraft for range performance to be reasonably accurate and the
detected variance in the speed does not significantly impact the range
performance of the aircraft.
Spoiler Vortex Trails
Configured for landing, with full flaps, and trimmed for a rate of
descent of approximately 500 ft/min, the aircraft’s approach speed was
approximately 120 KIAS and it touched down at approximately 110 KIAS,
with a landing roll out comparable with the specifications for the
In testing the accuracy of the instruments, based on the measured Test
Flight, the speed indications on the airspeed indicator, were
consistent with the averages measured. Additionally, when establishing
a set rate of climb on the vertical speed indicator, the respective
gain in altitude on the altimeter was achieved within the measured
minute, and a standard rate turn was achieved within the measured two
minute period using the turn coordinator.
Turning for Finals
The performance of the Lionheart Creations Learjet 24B was excellent
in flight, displaying the true high speed performance and flight
characteristics of this aircraft. The aircraft handles very nicely and
is a delight to fly. Overall, the aircraft model displays a very
accurate rendition of the flight characteristics and a reasonably
accurate rendition of performance of the real world aircraft.
A 35 page manual is provided in Adobe Acrobat format (.pdf) for the
Lionheart Creations Learjet 24B. This manual is very good in
explaining the various aspects and features of the aircraft and
deserves some attention.
Value for Money
On a value for money assessment, the Lionheart Creations Learjet 24B
is considered very good. At US$34.95, it is slightly expensive, but
whilst the model lacks in some aspects, it makes up for it in other
The aircraft model performed exceptionally within the existing
settings I have in FSX. I have most of my settings set very high and
there was no need to make any adjustments. FSX continued to perform
smoothly and as it would with any default aircraft.
This version of the Lionheart Creations Learjet 24B is for FSX / P3D
only. Other specified technical requirements are as follows:
• Windows XP (with SP3 installed), Windows Vista, or Windows 7 (32
• Microsoft Flight Simulator FSX with SP1 and SP2 (or Acceleration
Pack) or Lockheed Martin Prepar3d Flight Simulator v1.4 or v2.0
• Pentium V, 3GHz or similar, 2GB RAM, 512MB graphics card, and
715MB available HDD space.
Review Computer Specifications
The specifications of the computer on which the review was conducted
are as follows:
• Intel i7 990X Extreme 3.46GHz;
• NVidia GTX580, 1536MB graphics;
• 12GB Kingston DDR3 2000MHz;
• Windows 7, (64bit);
• Microsoft Flight Simulator FSX Acceleration; and
• additional major add-ons include: Active Sky Next, REX Essential
Plus Overdrive; Ultimate Traffic 2; Orbx FTX Global BASE;
Global VECTOR; Orbx FTX Global openLC EU; Orbx FTX region series;
and Orbx FTX airport series.
Lionheart Creations have delivered another little gem in the Learjet
24B. Displaying very good levels of detail, accuracy, and features,
the 24B provides a balance between quality, detail and price. With
high speed performance capabilities, the Learjet 24B is a fantastic
aircraft and one you will enjoy flying.
The Learjet 24B is another fine product from Lionheart Creations
which delivers an iconic aircraft that is fun to fly.
Ultra high definition and accurate exterior.
Excellent flight dynamics.
Very good instrument panel and systems representation.
Variations in cruise speed performance.
Some bland interior textures.
Issue with beacon flash displaying in the cabin.
● External Model:
● Flight Characteristics (does it fly by the numbers):
● Flight Dynamics (does it feel like what it looks like):
● Value for Money:
The Lionheart Creations Learjet 24B is awarded an overall Mutley’s Hangar score of 9.1/10,
with an "Highly Recommended" and a Mutley's Hangar Silver Award.