unit 3 Flashcards
You can find written instructions for safe flight-line vehicle operations in
AFOSH STD 91-100
Trim means to adjust the engine systems for optimum performance according to the TO’s limits. The two methods used to trim an engine are
manual and electronic
The pressure gauges used for an oil system pressure checks are connected at the
output side of the main oil pump and the vent system
When checking the turbine section you do not measure
IGT
When doing an anti-ice valve operational check on an F-16C/D before starting the engine you place the anti-ice engine switch to
OFF
Aircraft noise suppressors have how many primary air silencers to help reduce turbine whine?
2
The aircraft noise suppressor shutdown procedure is important because it
ensures the noise suppressor will be operational for the next aircraft
The sidewalls of the hush house test bay is constructed of
air inlet modules
The hush house exhaust deflector is constructed of
small panel modules filled with noise reduction material
Before moving an aircraft into the hush house, you must inspect the aircraft
and its forms
What hush house feature allows flexibility when running an engine that has been removed from the airframe?
The thrust stand slides into position on tracks
When inspecting the hush house, you are not required to check the
engine being tested
In addition to determining the condition of a repaired or overhauled engine, you also test engines
that have been involved in an incident or a mishap
When testing a TF34 engine at test cell, which test ensures that all operating limits and schedules from idle to maximum power are within limits?
Transient check
Which testing engine is equipped with a QEC kit?
TF39-1C
What two types of test cells does the Air Force currently use?
Fixed and portable
Which test cell noise suppressors use water to cool the exhaust gases?
Both fixed and portable
In a fixed test cell, the test bay access doors are sealed to
prevent unwanted noise from getting into the control room
The vertical baffles in the fixed test cell’s exhaust stack are designed to remove
low-frequency sound
The portable test cell is not equipped with a
model 3000 trailer
The basic portable test cell’s thrust trailer rails adjust to a height of
40 inches
the swivel pads at the bottom of the leveling jacks on the engine thrust trailer of the portable test cell provide all the following except
supporting the thrust trailer at a height of 80 inches
The portable test cell’s vibration pickups are cooled by the
pneumatic system
The portable test cell’s noise suppressor is not equipped with
a fuel trailer
When an engine arrives for a test run at the test cell it must
be operable with all known discrepancies corrected
Immediately prior to an engine test cell run, you check the engine and QEC kit (if applicable) for loose nuts, bolts, lock wire, tools, or any other material in order to
eliminate items that could possibly cause FOD
Which of these is not considered a cause of FOD?
Failure of internal parts
Improperly rigged throttle linkage during a test cell run can cause
engine overspeed
What should you do with the engine model and serial number when making general entries on the test cell engine log sheet?
Verify these numbers on the engine data plate
Before installing an engine on the test cell thrust stand, make sure then
engine rail adapters and stand are compatible
When preparing to install the miscellaneous kit prior to a test cell run, you inspect all indicators and controls for
possible damage
Where would you being you investigation of an engine with a possible oil consumption problem
Review AFTO Form 781H
Observing oil on the turbine wheel or oil smoke at or near the turbine section during a test cell run is a good indication of
a damaged aft bearing oil seal
You can get information such as temperature and barometric pressure from equipment at the test cell site or from
the control tower
The steps in removing the engine and test equipment from the test cell are
the reverse of the installation sequence
What information is used as an aid in test facility inspections?
Periodic inspection checklists.
