Lear Jet Training Resources


Lear 25		Lear 35		Lear 55
Lear 25 Checklist	Partial List of Lear 25 Limitations	Memory Items Quiz	Limitations Sorted By Value		Lear 55 Memory Items
Lear 25 General Topics On-Line Quiz	Lear 25/35 Engine Anti-Ice System Quiz Lear 25/35 Pitot-Static System Quiz	Flash Cards	Numerically Sorted Sorted By Subject Quiz		Lear 55 Operational Checks Summary
		Lear Spreadsheet W&B Excel Version 7 Spreadsheets N22MS \| N352HS \| N405PC Palm Spreadsheets 352HS \| 405PC \| 22MS	Annunciator		Lear 55 Checklist
		BOMBARDIER Lear 35a Checklist w/Rosemount Pitot Static System	Brand "X" Operators Lear 35a Checklist with TR4000 Brand "X" Operators Lear 35a Checklist without TR's		Lear 55 Spreadsheet for W&B
		Lear 35 Recurrent Training Exams
		LR35 2nd Segment Spreadsheet	Conversions Pounds to Liters
		LR35 Circuit Breaker Panel	Sound of a TFE731 Engine Starting 29 Seconds MP3
		LR 35 Emergency Descent Performance
		Internal Windshield Defog Switch

One or both current limiters failed. Check Voltmeter Battery Voltage=Both CL's Failed. Index

Less than .25 psi fuel pressure to engine. Light extinguishes at 1 psi.
Memory items: Thrust Lever Retard, Standby Pump On, Air Ignition On.
A low fuel pressure switch is located between the fuel shutoff valve and the engine-driven fuel pump in
each engine feed line.The light extinguishes when pressure increases above 1.0 psi.
Illumination of a FUEL PRESS warning light is an indication of loss of fuel pressure to the
engine. The probable cause is failure of the affected wing jet pump. The engine-driven pump is
capable of suction-feeding enough fuel to sustain engine operation without either the wing standby
pump or jet pump. However, 25,000 feet is the highest altitude at which continuous operation should
be attempted in this event. Index

(FC530) Steady- Spoilers not locked down. Flashing-Spoilers deployed with 13 degrees
or more flaps extended. Index

Electric door hook not fully retracted, or one of 10 latch pins not fully engaged. Index

Either: 1- Spoilers split 6 degrees or more, or 2- Spoiler and aileron split 6 degrees or more
in spoileron mode. Index

Either: 1- One or both Pitot Heaters is inoperative with the switches on,
or 2- One or both Pitot Heat switches is off. Index

A fuel filter is installed in each engine feed line to filter the fuel before it enters the engine-driven
fuel pump. Should the filters become clogged, the fuel is allowed to bypass them. A differential pressure
switch installed in each filter assembly illuminates the one amber FUEL FILTER annunciator light if either
or both filters are bypassing fuel (Annunciator Panel section).
Index

Either: 1- Switch is off and valve is open, or 2- Switch is on with insufficient pressure, or
failure of valves to open. Index

Steady: System is off or failed. (During pusher actuation it is normal)
Flashing: In shaker range. Index

System inoperative above .69 Mach with autopilot off. Overspeed warning sounds above .74 Mach. Index

Pylon or Duct temperature too hot. Both lights on: Manifold overpressure (some SN's.) Index

(SN > 113) Cabin altitude has reached 8750 feet and controller has switched to manual mode. (SN >113) Index
At 9,500 the Emergency Pressurization Valves are activated, directing engine bleed air directly into the cabin.
At 10,100 the cabin altitude warning horn sounds.
At 11,500 the cabin altitude limiters actuate.
At 14,000 the passenger oxygen masks deploy and cabin overhead lights illuminate.
Diff Press for relief of the outflow valve is 8.9. Diff Press relief for the safety valve is 9.2.

(SN < 113) At 10,000 the controller has switched to manual mode. Index
At 11,500 the cabin altitude limiters actuate.
At 14,000 the passenger oxygen masks deploy and cabin overhead lights illuminate.
Diff Press for relief of the outflow valve is 8.9. Diff Press relief for the safety valve is 9.2.

Cabin Alt 10,000’ Warning Memory Items
(Emergency Descent)
1. Crew Oxygen Masks DON & Select 100%
2. Thrust levers IDLE
3. Autopilot DISENGAGE
4. Spoilers EXTEND
5. Landing Gear (below Mmo or Vle) DOWN
6. Descend at Mmo/Vle but not below MSA
7. PASS OXY Valve NORMAL
8. PASS MASK Valve MAN

Aircraft is on the ground and horizontal stabilizer is not trimmed for takeoff. Index

Wheel Master Switch is depressed, Primary pitch trim has a fault (potential runaway) or
Primary pitch trim is running at fast speed with flaps up. Index

A green or amber FUEL XFLO annunciator light (Annunciator Panel section)
on the glareshield illuminates continuously whenever the crossflow valve is fully open.

If wing fuel imbalance occurs, as in single-engine operation, crossflow is accomplished by opening the
crossflow valve and turning on the standby pump in the heavy wing, while ensuring that the opposite
standby pump is off. The transfer rate is approximately 50 pounds of fuel per minute.

With both engines operating, opening the crossflow valve to balance fuel should not be attempted when a
red FUEL PRESS light is illuminated unless it can be accomplished below 25,000 feet. To do so would divert
pressure from the affected engine-driven pump to the crossflow line. Instead, asymmetric power settings
may be used to balance fuel, if necessary. The above considerations do not apply to single-engine
operations, and normal cross-flow operations may be performed as usual. Index

Fire or overheat is detected in the associated engine. Handle shuts off Fuel,
Bleed Air, Hydraulic, and arms both bottles. Index
Memory Items:
1. Thrust Lever IDLE UNLESS CRITICAL THRUST SITUATION
2. If fire continues more than 15 seconds or there are other indications of fire:
a. Thrust Lever CUTOFF
b. Engine Fire Pull Handle PULL
c. ARMED Light DEPRESS ONE

Fire Extinguisher System is Armed. Depressing an illuminated ARMED Light
Discharges the contents of one fire extinguisher bottle into the affected engine nacelle. Index

Illumination of any red anti skid lights indicates a malfunction.
For anti-skid to work, Switch must be on, Both squat switches must be in the ground mode,
Parking brake must be released, and Taxi speed must be greater than 10 Kts. Index

Illumination of both Red Main Gear Unsafe Light indicates
Main Gear Inboard Doors are not fully closed. After Manual gear extension, both L & R Unsafe lights
remain illuminated. Index

Fuselage Valve Switch
When the FUS VALVE switch is positioned to OPEN, both the fuselage valve and the crossflow valves
simultaneously open. When fuel is transferred in this manner, 162 pounds of fuel remain in the fuselage
tank. Gravity Transfer is possible on al airplanes through the normal transfer line. An alternate method of
transferring fuel in flight is possible on aircraft equipped with the FUS Valve Switch by opening it.
Prior to doing so, it is essential to first assure that the XFER-FILL switch is OFF and that both standby
pump switches are off. Then when the FUS Valve Switch is placed in the OPEN Position, the fuselage
valve and crossflow valve open simultaneously. The valves are not sequenced as they are when using the
XFER-FILL switch. Index

Standby Pump
When either Standby Pump is on, the FUS VALVE switch is rendered inoperative, and neither the fuselage
valve nor the crossflow valve will open if the fuselage moved to OPEN.
If the FUS VALVE switch is already in the OPEN position, (FUS VALVE and CROSSFLOW VALVE OPEN)
turning either Standby Pump Switch on will automatically cause the fuselage valve and the crossflow valves
to sequence closed. Index

GREEN FULL LIGHT
When filling the fuselage tank, a float switch shuts off the standby pump, closes the Transfer and Crossflow
valves, then closes the Fuselage Valve (if so equipped). The float switch then illuminates the green FULL light.
The green FULL light remains illuminated until the XFER-FILL switch is turned off. Index

White EMPTY Light
With the XFER Switch in the XFER position, the White EMPTY light illuminates when the fuselage tank low pressure
switch closes. This light will illuminate when either of 2 conditions exist:
1- The Fusulage Tank is Empty.
2- The Fuselage Transfer Pump has failed.

The Wing Fuel Pressure Switch prevents overpresurization of the wings during fuel transfer. The switch
deenergizes the fuselage transfer pump when wing pressure reaches 5 psi; the switch resets when the
pressure drops below 2.5 psi. Index

Jet Pump Switches
There are 4 jet pumps - one in each wing and one in each tip tank. The switches control electric motive-flow valves.
The amber light next to the switches indicates the motive flow valves are in transit, or not in the position selected by
the switch. Each switch controls both jet pumps on that side. Index

Amber Light Adjacent to the Fuel CROSS FLOW Switch
The amber light adjacent to the CROSS FLOW switch illuminates when the valve is in transit or
is not in the position selected. If wing fuel imbalance occurs, as in single-engine operation,
crossflow is accomplished by opening the crossflow valve and turning on the standby pump
in the heavy wing, while en-suring that the opposite standby pump is off.
The transfer rate is approximately 50 pounds of fuel per minute.

With both engines operating, opening the crossflow valve to balance fuel should not be attempted when a
red FUEL PRESS light is illuminated unless it can be accomplished below 25,000 feet. To do so would divert
pressure from the affected engine-driven pump to the crossflow line. Instead, asymmetric power settings
may be used to balance fuel, if necessary. The above considerations do not apply to single-engine
operations, and normal cross-flow operations may be performed as usual. Index

Amber Light Adjacent to the Fuel XFER-FILL Switch
The amber light adjacent to the XFER-FILL switch illuminates when the valve is in transit or is not
in the position selected. The valve is powered through the right main bus FILL & XFER circuit breaker. Index

Amber light adjacent to the FUS VALVE switch.
The amber light adjacent to the FUS VALVE switch will illuminate when the fuselage valve is in transit or is not in the position selected. As an option of SNs 35-299 through 35-596, and as standard equipment on 35-597 and subsequent, and on all 36 models, a DC motor-driven fuselage valve is installed in a second fuel line, connecting the fuselage tank with the crossflow manifold on the right side of the crossflow valve. The valve is controlled by the FUS VALVE switch on the fuel control panel. When the FUS VALVE switch is positioned to OPEN, both the fuselage valve and the crossflow valve simultaneously open, allowing fuel to gravity-flow from the fuselage tank to both wings. When fuselage fuel is transferred in this manner, 162 pounds of fuel remain in the fuselage tank. The fuselage valve is also controlled by the XFER-FILL switch. When placed to FILL, the transfer valve, fuselage valve, and crossflow valve are sequenced open, and the standby pumps are energized to pump wing tank fuel through both fuel lines into the fuselage tank. The fuselage valve remains closed when the XFER-FILL switch is positioned to XFER. The amber light adjacent to the FUS VALVE switch will illuminate when the fuselage valve is in transit or is not in the position selected. If either standby pump switch is on, the FUS VALVE switch is rendered inoperative, and neither the fuselage valve nor the crossflow valve will open if the FUS VALVE switch is moved to OPEN. Conversely, if the FUS VALVE switch is already in the OPEN position (fuselage valve and crossflow valve open), turning either standby pump switch on will automatically cause the fuse-lage valve and crossflow valves to sequence closed. The fuselage valve is powered through the left essential bus FUSE VAL (or FUS VALVE) circuit breaker. Index