GENERAL
The Learjet 45 is certified under FAR Part 25
and Part 36 as a transport category airplane. The
aircraft is also certified under EC JAR 25
(European Community–Joint Airworthiness
Requirements). It is designed for all-weather
operation, and cleared for operation up to
51,000 feet and to 0.81 Mach (Figure 1-1).
STRUCTURE
GENERAL
The Learjet 45 aircraft structural design meets
or exceeds FAR Part 25 requirements with re-
spect to fatigue and damage tolerance evalua-
tion. The structure consists of the fuselage,
the wing, the empennage and flight controls.
The discussion on the fuselage includes all
doors and windows. Figure 1-2 illustrates the
general dimensions of the airplane.
Figure 1-3 displays the Learjet 45 turning ra-
dius, based upon a nosewheel orientation of
60 degrees from center at slow speed.
Figure 1-4 is the manufacturer’s display of
danger areas around the Learjet 45. Areas por-
trayed represent the weather radar transmission
cone as well as sections in front of the engine
intakes and aft of the engine exhaust cone.
FUSELAGE
General
The fuselage is made of conventional metal,
semimonocoque construction, of near circu-
lar cross–section. The fuselage is constructed
in three major assemblies and then mated into
four basic sections (Figure 1-5). They are:
1. The nose section, which extends from
the radome aft to the forward pressure
bulkhead.
2. The pressurized section, which includes
the cockpit and passenger areas, extends
aft to the rear pressure bulkhead.
3. The fuselage fuel section, which starts
just aft of the rear pressure bulkhead
and extends to the tailcone.
4. The tailcone section, consisting of the
portion of the airplane aft of the fuel sec-
tion.
The fuselage also incorporates attachments
for the wings, tail group, engine support py-
lons, and the nose landing gear.
L E A R J E T 4 5
P I L O T T R A I N I N G M A N U A L
1-2
FOR TRAINING PURPOSES ONLY
FlightSafety
international
Figure 1-1. Learjet 45