Lts 101.txt

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Lts has how many ignitors?

2
Lts ignitors are double or single pole?

Single
What must be done to ignitors before working on system?

Ground to discharge
How many different gearboxes are there for lts?

3 - prop, bell 222 , astar
Lts can be modulized into 3 sections, what are they?

Accesory gearbox, compressor, combustion
How many turbine stages does the lts have

2
There are 2 different comp turbine wheels, explain difference?

One is solid(bliss) and the other has removable blades
Comp turbine wheel on lts with removable blades has to be checked often , how?

Dial indicator to measure blade movement
What failsafe does the lts have in case of bearing #3 failure?

A cutter on the turbine that cuts a py blank and engine goes to flight idle
Lts measures speeds using what?

Monopole pickups
Where is the mgt measured on the lts

Station 4.5.1 -itt - just before the power turbine nozzle
How many thermocouple harnesses on the lts?

4 harnesses ? Each with a pair of probes. 5 is a mod
What is unique about the lts mgt harness?

Uses a junction box to connect the harness'
What must be done to the junction box on lts before doing a resistance check?

All wires disconnected
Lts uses what kind of stall control?

Modulator ring
The lts modulator ring is open or closed when starting up?

Closed
Lts anti ice is done how?

P3 air blown through 4 struts in the inlet
Anti ice is on or off when the system is de-energized?

On
The lts fuel density adjustment is for what?

Changing to different fuels
Fcu is piggybacked on what in the lts

Fuel pump
What happens if the splined shaft is left out when installing fcu ?

Engine will overspeed
How is the nozzle spray checked on the lts?

The whole manifold with all nozzles installed is tested at once
What 2 inspections are done on the fuel manifold on the lts?

.020" between manifold lines and a flatness check (also .020")
What must be done after all filter changes? On lts

Prime oil system. Dry motor engine till oil pressure shows steady
#1 bearing description

Ball/ thrust .. Forward of compressor
#2 bearing desciption

Roller bearing
#3 bearing description

Ball/ thrust - forward of power turbine (aft end of the PT shaft )
How does the power get to agb?

Through a coaxial shaft
#2/3 bearing coking check , how is this done?

Differential pressure testor
How many chip detectors are in the accessory gearbox on the LTS101?

1

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Byronallen

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Lts 101.txt

Description

Aircraft maintenance engineering , Honeywell Lts101 overview

Updated

2011-07-22T04:17:38Z