1. TURBINE OPERATION, INSTRUMENTS, AND MAINTENANCE PP 2

2. EGT exhaust gas temperature
Monitors mechanical integrity of turbine section.
Also indicates overall engine operating conditions.

3. variations of egt Turbine Inlet Temperature (TIT)
Probes sense temp at inlet to the power turbine
Turbine Outlet Temperature (TOT)
Probes sense temp at turbine outlet
Interstage Turbine Temperature (ITT)
Probes sense temp between turbine stages
Turbine Gas Temperature (TGT)
Same as TOT, for all practical purposes

4. Engine indicating and crew alerting system (Eicas)
Can be CRT or LCD

5. Ground operations

8. Engine starting Know your procedure Use the checklist
Know potential problems and their solutions
Hot start= ignition occurs when there is an excessively rich fuel/air mixture
Monitor TIT or ITT during start
If overtemp occurs shut off fuel immediately
Hung start= occurs when engine startup is normal and EGT is normal but the engine fails to accelerate
Starter released too soon
Battery too weak to reach sufficient starting speed

9. Engine Starting Fire Immediately shut off fuel flow to the engine
Motor starter
Follow POH procedures

10. Calculating EPR or discharge pressure

11. Engine performance Rating Terminology
Takeoff power rating= the amount of power that an aircraft engine is permitted to produce during takeoff
Maximum continuous power = the amount of power an engine can be allowed to produce without any time limitations
Maximum cruise power = the max power for aircraft cruise speeds-can be same setting as maximum continuous power
Cruise power = best fuel economy during flight and extended range

12. Engine performance Rating Terminology continued
Maximum climb power = used for normal climb to a cruising altitude, no time limitations on this setting
Ground idle = lowest engine speed permitted for ground operations (50%-70%)
Flight idle = lowest engine speed permitted in flight- often used for descent, approach, and landing (10% above ground idle)
Derated Engine = engine power output is intentionally limited to less than the maximum power that engine can produce

13. Engine performance Rating Terminology continued
Part-throttle engine(flat-rated) = an engine designed to produce takeoff thrust under standard sea-level conditions before the power lever is advanced to the full-throttle position
Full-throttle engine = takeoff power is obtained when the power lever is advanced to the full throttle position

14. Fluid wash

15. Abrasive grit blast Used for removing heavy engine contamination
Engine is run while a specific quantity of grit is fed into the engine

16. Jetcal
Used for checking RPM, EGT, wire resistance, insulation breaks, and various other instruments depending on Jetcal model.

17. jetcal

18. Jetcal

19. Jetcal set up