Ground Running Flashcards
What is ground running a vital step for
Maintenance
What must the supervisor ensure with members just about to ground run
That they are briefed
Minimum and typical team consists off
- Supervisor
- Operator
- Safety Person
Who is usually the operator
Pilot
What are the main dangers zones in a helicopter
- Main rotor
- Blade sailing
- Tail rotor
- Engine Air Intakes
- Engine Exhaust
If you have to go under rotor disc for a reason where do you enter
- Forward right side
- person who operates has to be able to see you
Reasons for ground running
- Testing of engine after installation
- testing of engines after major component change
- Testing engine driven systems
- preventive maintenance
- verify faults
What term is this:
- residual fuel remaining in the combustion chamber following an attempt to start with no subsequent ignition
Wet start
What term is this:
- motor the engine over using the starter motor with no ignition or fuel. The compressor air will blow any residual fuel out of the system
Vent run
What term is this:
- a full engine run carried out after compressor wash. Removes residual water/ZOK mixture whilst drying the engine out, thus preventing corrosion
Drying out run
What term is this:
- similar to a Vent run (Dry crank)
Dry run
What term is this:
- engine hangs up during start up and does not accelerate. Possible causes include fuel starvation
Stagnation (Hung Start)
What term is this:
- turbine temperature rises to a level above the temperature allowed for engine starting in the AMM. HP cock should immediately closed and the reason identified
Hot start
What term is this:
- a timed check, closing of HP cock, to the engine stopping
Run-down time
Rundown time check sequence
- close HP Cock
- start stop watch
- time engine until rotation cease
- check time against AMM
- This is indication of engine condition
- carried out by the pilot
ISA graph
- Plotted and a line drawn to intersect with the ISA reference line
- figure is then rewd from that point
In modern aircraft how can pilot correct ISA
- On computer screens
- display results on instruments
What do we compare the ISA data collected against
- set numbers that apply to all engines
- a set of numbers that the manufacturer give to that specific engine
What is the data called that determines engines condition and performance
Placard Data
Placard will be recorded where
- Engine log book
- F700 for the aircraft
- printed on tape and stuck next to the gauge in cockpit
What does this mean :
- engine is capable of making much more power on an ISA day than the pilot is allowed to use
Flat Rated
