1
You must _________ before trouble shooting can begin.
know the system
A weak fuel flow along with normal airflow through a turbine engine may result in
a lean die-out.
what is Used to isolate a possible issue through what's wrong or not wrong
Logic Flow Charts
POOR ENGINE RESPONSE TO THROTTLE LEVER MOVEMENT.
BAD FUEL CONTROL./ DIRTY COMPRESSOR. /IMPROPERLY RIGGED VSV.
IF THE ENGINE HAS LOW OIL PRESSURE WITH THE TEMPERATURE NORMAL, WHAT MIGHT BE THE PROBLEM?
PRESSURE REGULATOR IS OUT OF ADJUSTMENT.
You must make a list of _____ vs. _________ when troubleshooting.
known / unknown
What is the possible cause when a turbine engine indicates no change in engine parameters, but oil temperature is high?
Engine main bearing failure
What will not be a likely cause of Fan Blade Shingling.
Engine Undertorque
VIGV, VSV, ARE WHICH TYPE OF TURBINE ENGINE PARTS
VANES
WHICH OF THE FOLLOWING COULD CAUSE HIGH OIL TEMPERATURE IN A HELICOPTER?
BLOWER SHAFT SHEERED/ OIL COOLER FAULTY/ BEARING FAILURE
What is the third step in troubleshooting?
repair
what is used for finding possible electrical faults?
Wiring Diagram
EPR & RPM LOW, EGT AT MAX LIMIT, POSSIBLE HIGH FUEL FLOW, WHAT WOULD BE THE POSSIBLE PROBLEM?
BAD FUEL SPRAY PATTERN
THROTTLE LEVER SPLIT SHOULD BE
1/2” OR LESS
IF THE HIGH OIL FILTER DIFFERENTIAL PRESSURE (DELTA P) HAS THE POP OUT INDICATOR (RED BUTTON) OUT, WITH A NORMAL TEMPERATURE AND PRESSURE, WHAT MIGHT BE THE PROBLEM?
WEAK MAGNET.
You receive a work order with the following write-up:
Engine oil pressure fluctuates during TO power but does not fluctuate at cruise power.
Choose the most correct answer following the troubleshooting guidelines.
Engine oil pressure gage connection loose
what is Used to find possible faults with a subsystem
System Diagram
EPR LOW, ALL OTHER PARAMETERS NORMAL?
DAMAGED Pt7 LINE OR PROBES LEAKING.
WHAT TYPE OF LEAK WOULD BE CAUSED BY WORN OUT CARBON SEALS?
OIL
INTERNAL ENGINE (ROTATING PART) FAILURE WOULD BE INDICATED BY
HIGH OIL TEMPERATURE & VIBRATION.
You receive a work order with the following write-up:
Engine number 2 would not start after servicing.
Choose the most correct answer following the troubleshooting guidelines.
Not enough information consult flight crew
what is Used to find possible causes of a problem
Troubleshooting Charts
HIGH EPR, ALL OTHER INDICATIONS NORMAL?
LOOSE OR DAMAGED Pt2 LINE OR SENSOR
WHAT TYPE OF LEAK WOULD BE CAUSED BY A LABYRINTH SEAL?
OIL
A WELL DEFINED PROBLEM IS NEEDED TO PROPERLY TROUBLESHOOT. IF DATA CONCERNING THE PROBLEM IS INCOMPLETE OR UNCLEAR,
CONSULT THE FLIGHT CREW