Saxaphones
The pneumatic (reed) type stall warning system installed in some light aircraft is activated by what?
What is negative air pressure.
Stall warning systems are generally designed to begin warning the pilot when a stall is what?
What is imminent.
What is the fixed line mark attached to the compass bowl of a magnetic compass called?
What is a lubber line.
Engine oil temperature gauges indicate the temperature of the oil entering where?
What is entering the engine.
The fuel flowmeter used with a continuous-fuel injection system installed on an aircraft horizontally opposed reciprocating engines measures the fuel pressure drop across the what?
What are fuel nozzles.
The maximum deviation (during level flight) permitted in a compensated magnetic direction indicator installed on an aircraft certificated under 14 CFR Part 23 is how many degrees?
What is 10°
A Bourdon tube instrument may be used to indicate what?
What is pressure and temperature.
When performing the static system leakage check required by 14 CFR 91.411, the technician utilizes what kind of pressure?
What is negative pressure.
An electronic system that monitors engine and airframe parameters and does not utilize traditional engine gauges, is called what?
What is an engine indicating and crew alerting system (EICAS)
What instrument on a gas turbine engine should be monitored to minimize the possibility of a 'hot' start?
What is turbine inlet temperature.
A synchro transmitter is connected to a synchro receiver how?
What is electrically with wires.
The maximum altitude loss permitted during an unpressurized aircraft instrument static pressure system integrity check is how many feet in 1 minute?
What is 100 ft.
Turbine engine EGT thermocouples are constructed of what?
What is chromel and alumel.
What basic meter is used to indicate cylinder head temperature in most aircraft?
What is a galvanometer.
In what units are turbine engine tachometers calibrated? *Percent of what?
What is percent of engine RPM.
Cases for electrically operated instruments are made of what?
What is iron or steel
Who is authorized to repair an aircraft instrument?
What is a certificated repair station approved for that class instrument.
Engine pressure ratio is the total pressure ratio between the what?
What is front of the compressor and the rear of the turbine.
An indication of unregulated power changes that result in continual drift of manifold pressure indication on a turbosupercharged aircraft engine is known as what?
What is bootstrapping
On a twin-engine aircraft with fuel injected reciprocating engines, one fuel flowmeter reads considerably higher than the other in all engine operating configurations. What is the probable cause of this indication?
What is one or more fuel nozzles are clogged
The green arc on an aircraft temperature gauge indicates what?
What is the desirable temperature range.
What marking color is used to indicate if a cover glass has slipped?
What is white.
Basically, the indicator of a tachometer system is responsive to change in what?
What is frequency.
Instruments that provide readings of low or negative pressure, such as manifold pressure gauges, are usually what type?
What is diaphragm or bellows.
This is determined by dividing turbine outlet total pressure by engine inlet total pressure.
What is engine pressure ratio.