Term
| WHAT INSTRUMENTS IN AN AIRCRAFT ARE CONNECTED TO THE STATIC SYSTEM? |
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Definition
| AIRSPEED INDICATOR, VERTICAL SPEED INDICATOR, AND ALTIMETER. |
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Term
| WHAT TYPE OF REPAIRS OR ALTERATIONS CAN A CERTIFICATED A&P MECHANIC MAKE TO AIRCRAFT INSTRUMENTS? |
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Definition
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Term
| WHAT IS THE SIGNIFICANCE OF A RED RADIAL LINE ON THE DIAL OF AN AIRCRAFT INSTRUMENT? |
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Definition
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Term
| WHAT IS THE SIGNIFICANCE OF A YELLOW ARC ON THE DIAL OF AN AIRCRAFT INSTRUMENT? |
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Definition
| CAUTION RANGE OF OPERATION. |
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Term
| WHAT IS THE SIGNIFICANCE OF A GREEN ARC ON THE DIAL OF AN AIRCRAFT INSTRUMENT? |
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Definition
| NORMAL RANGE OF OPERATION. |
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Term
| WHAT IS THE SIGNIFICANCE OF A WHITE ARC ON THE DIAL OF AN AIRSPEED INDICATOR? |
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Definition
| INDICATES WHEN THE FLAPS MAY BE LOWERED. |
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Term
| WHAT IS USED TO WARN A MECHANIC THAT THE GLASS ON AN AIRCRAFT INSTRUMENT THAT CONTAINS THE RANGE MARKS HAS SLIPPED? |
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Definition
| A SLIPPAGE MARK OR THE CASE BEZEL. |
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Term
| WHERE CAN A MECHANIC FIND THE RANGE MARKINGS THAT ARE REQUIRED ON THE INSTRUMENTS IN A PARTICULAR AIRCRAFT? |
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Definition
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Term
| WHAT CHECK MUST BE MADE IF A MECHANIC REPLACES ANY INSTRUMENT THAT IS CONNECTED TO THE INSTRUMENT STATIC SYSTEM? |
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Definition
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Term
| WHY ARE MANY OF THE ELECTRICAL INSTRUMENTS MOUNTED IN STEEL CASES? |
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Definition
| THE STEEL CASE CONCENTRATES THE FLUX PRODUCED BY MAGNETS IN THE INSTRUMENT AND KEEPS IT FROM AFFECTING NEARBY INSTRUMENTS. |
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Term
| WHY MUST AN AIRCRAFT INSTRUMENT PANEL BE ELECTRICALLY BONDED TO THE PRIMARY AIRCRAFT STRUCTURE? |
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Definition
| THE BONDING STRAPS CARRY THE RETURN CURRENT FROM THE INSTRUMENTS INTO THE AIRCRAFT STRUCTURE. |
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Term
| WHAT ERROR IS CORRECTED WHEN AN AIRCRAFT COMPASS IS SWUNG? |
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Definition
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Term
| WHAT FLUID IS USED IN AN AIRCRAFT MAGNETIC COMPASS? |
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Definition
| A SPECIAL WATER-CLEAR FLUID, SIMILAR TO KEROSINE. |
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Term
| WHAT IS THE MAXIMUM AMOUNT OF DEVIATION ERROR THAT IS ALLOWED WHEN A MAGNETIC COMPASS IS INSTALLED ON A AIRCRAFT? |
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Definition
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Term
| WHAT IS THE MAXIMUM AMOUNT OF LEAKAGE THAT IS ALLOWED WHEN CHECKING THE STATIC SYSTEM OF AN AIRCRAFT THAT IS OPERATED UNDER INSTRUMENT FLIGHT RULES? |
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Definition
UNPRESSURIZED AIRCRAFT- STARTING FROM 1,000 FT INDICATION CANNOT LEAK MORE THEN 100FT IN ONE MINUTE.
PRESSURIZED AIRCRAFT- SYSTEM AT MAXIMUM PRESSURE DIFFERENTIAL OF THE CABIN, MUST NOT LEAK MORE THAN 2% OR 100FT WHICH EVER IS GREATER IN ONE MINUTE. |
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Term
| WHY MUST THE LENGTH OF THE THERMOCOUPLE LEADS NOT BE ALTERED WHEN INSTALLING A CYLINDER HEAD TEMPERATURE INDICATOR? |
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Definition
| THE RESISTANCE OF THE THERMOCOUPLE AND ITS LEADS MUST BE KEPT AT THE VALUE SPECIFIED FOR THE INDICATOR. |
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Term
| WHAT SHOULD A MANIFOLD PRESSURE GAUGE READ WHEN THE ENGINE IS NOT OPERATING? |
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Definition
| EXISTING BAROMETRIC PRESSURE. |
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Term
| WHAT IS THE DIFFERENCE BETWEEN A TWO MINUTE AND FOUR MINUTE TURN AND SLIP INDICATOR? |
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Definition
- TWO MINUTE- ONE NEEDLE-WIDTH DEFLECTION FOR A STANDARD RATE OF TURN, 3 DEGREES PER SECOND.
- FOUR MINUTE- ONE NEEDLE WIDTH DEFELCTION FOR A HALF-STANDARD RATE OF TURN, 1.5 DEGREES PER SECOND.
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Term
| WHAT IS THE DIFFERENCE BETWEEN A TURN AND SLIP INDICATOR AND A TURN COORDINATOR? |
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Definition
| TURN AND SLIP INDICATOR IS ONLY FOR THE YAW AXIS, TURN COORDINATOR USES A CANTED GYRO AN IS FOR BOTH YAW AND ROLL AXES |
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Term
| WHAT IS USED AS THE SENSOR IN THE FUEL TANK FOR AN ELECTRONIC-TYPE FUEL QUANTITY INDICATING SYSTEM? |
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Definition
| TUBULAR CAPACITORS, EXTEND ACROSS THE FUEL TANK FROM TOP TO BOTTOM. |
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Term
| WHY IS A DUAL TACHOMETER USED ON A SINGLE ENGINE HELICOPTER? |
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Definition
| ONE NEEDLE INDICATES SPEED OF THE ENGINE, AND THE OTHER INDICATES SPEED OF THE MAIN ROTOR. IF NEEDLES MATCH THEN THE CLUTCH IS NOT SLIPPING AND THE ROTOR IS SOLIDLY ENGAUGED TO THE ENGINE. |
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Term
| IN WHAT UNITS IS THE TACHOMETER USED ON A TURBINE ENGINE CALIBRATED? |
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Definition
| IN PERCENTAGE OF TAKE OFF RPM. |
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Term
| WHAT KIND OF SYSTEM IS USED TO MEASURE THE EXHAUST GAS TEMPERATURE OF A TURBINE ENGINE? |
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Definition
| AN AVERAGING SYSTEM MADE UP OF A SERIES OF THERMOCOUPLES IN THE EXHAUST DUCT OF THE ENGINE. |
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Term
| WHAT WOULD LIKELY CAUSE THE NEEDLE OF AN ELECTRICAL OIL TEMPERATURE GAGE TO PEG ON THE HIGH SIDE OF THE INSTRUMENT DIAL? |
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Definition
| AN OPEN IN THE BULB CIRCUIT. |
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Term
| WHAT IS USED AS A FLOWMETER FOR MOST OF THE SMALL HORZONTALLY OPPOSED FUEL INJECTED AIRCRAFT ENGINES? |
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Definition
| A PRESSURE GAUGE THAT MEASURES THE PRESSURE DROP ACROSS THE INJECTOR NOZZLES. |
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Term
| WHAT TWO SOURCES OF POWER ARE USED TO OPERATE THE GYRO INSTRUMENTS IN AN AIRCRAFT? |
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Definition
| AIR OPERATED BY SUCTION OR PRESSURE, OR ELECTRICALLY. |
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