Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
124 Cards in this Set
- Front
- Back
What eliminates nose up attitude during hover and low speed forward flight? |
Stabilator |
|
What section of the H-60 is designed to give a smooth airflow induction for cooling major aircraft systems and subsystem components? |
Main Rotor Pylon |
|
A tuned nose vibration absorber reduces what type of H-60 cockpit centerline vertical vibration? |
4/rev |
|
The H-60 stabilator vibration absorber is attached to the |
Right stabilator attachment fitting |
|
The roll vibration absorbers on the H-60 are installed under the |
main landing gear drag beam support fairings |
|
Following installation, the H-60 vibration absorber that requires a tuning weight adjustment using the 8500 Balancer/ Analyzer and functional check flight is the |
cabin |
|
Which part of the main landing gear shock strut absorbs normal landing loads on the H-60? |
lower |
|
You must replace the brake linings on an H-60 when the brake lining wear pin is |
flush with the housing nut |
|
what type of shock strut is installed on the H-60 tail landing gear? |
two-stage air-oil |
|
The attachment point for the tail wheel assembly on the H-60 tail landing gear is the |
fork assembly |
|
Where is the H-60 parking brake handle located? |
On the pilot's side of the center console |
|
What allows for thermal expansion when the brakes on the H-60 are OFF? |
Master cylinder |
|
Before servicing an H-60 landing gear strut with nitrogen, you must ensure there |
are no hydraulic fluid leaks |
|
To avoid placing undue stress on the brake assembly when servicing the upper stage of the shock strut, you need to |
release the parking brake |
|
The feature that differentiates an H-60 tail servo from the primary hydraulic servos is |
in the tail servo, only one stage pressurizes at a time |
|
What system is used to operationally check the H-60 hydraulic system during ground operations? |
Backup hydraulic |
|
What drives the No. 1 hydraulic pump module on the H-60 helicopter? |
Left accessory module of the main transmission |
|
If the red indicator button on the hydraulic pump filter has popped out while you are checking the No. 1 hydraulic system on an H-60, it means the differential pressure, in pounds per square inch (psi), has risen from |
60 to 80 psi. |
|
What type of replaceable micron filter is used in the H-60 hydraulic refill pump? |
15 |
|
When the No. 1 hydraulic system on an H-60 fails, the pressure switch that will send a signal to the logic module is located in the |
transfer module |
|
The H-60 hydraulic system continually monitors the operation of the fluid level switches in the pump modules by using |
logic modules |
|
When pressed, the H-60 servo jam simulation button causes the |
No. 1 or No. 2 PRI SERVO PRESS caution capsule to illuminate |
|
The first- and second-stage hydraulic systems on the H-60 are prevented from being shut off at the same time by a(n) |
electrical interlock through the opposite system's pressure switch |
|
How many pilot-assist servos are there on the H-60 hydraulic system? |
Four |
|
On the H-60, the selected position for the cyclic stick will be maintained in the longitudinal axis by the actuator's |
TRIM function |
|
Detailed procedures for performing operational checks of the H-60 hydraulic system are found in the Fault Isolation Procedures Manual, technical order (TO) 1H-60(H)G-2- |
9 |
|
Although you must perform certain checks anytime you replace hydraulic components on the H-60, what are you not always required to do? |
Perform a functional check flight (FCF) |
|
What type of H-60 hydraulic leak check observation would you use if the location of a components does not permit you to directly observe the leak? |
Indirect |
|
The capacity of the cargo hook on the H-60 is |
8,000 pounds |
|
When the explosive squib is fired, the H-60 CARGO HOOK OPEN light will extinguish when |
a new squib is installed |
|
The test mode for the H-60 cargo hook system is designed to check the emergency release electrical circuits for a(n) |
open or short condition |
|
Which limit switch on the H-60 (Lucas-Western) rescue hoist will actuate to stop the hoist cable when there is 3.5-4.5 wraps of cable remaining on the drum? |
Full-out limit |
|
Which limit switch on the H-60 (Breeze-Eastern) rescue hoist will actuate to stop the cable when there is a minimum of 4 wraps remaining on the drum? |
Emergency full-out |
|
To avoid injury and prevent cable fouling when raising or lowering the rescue hoist cable on an H-60, you should use |
leather gloves and maintain tension on the cable |
|
What is the most likely cause of a birdcaged rescue hoist cable on an H-60? |
Hook bearing not rotating freely |
|
On the H-60, the valve type used to mix engine or auxiliary power unit bleed-air with the ambient air to obtain the desired temperature is |
bleed-air mixing |
|
Power to vent H-60 ventilation blower ON and OFF switch is provided by the |
No. 2 DC primary bus |
|
How many fire detector sensors are installed in the H-60 fire detection system? |
Five |
|
Placing the H-60 helicopter FIRE DET TEST switch to position 2 will generate a false fire signal, which activates |
the No. 1 and No. 2 engine deck-mounted fire detectors |
|
Both H-60 engine fire extinguisher containers will automatically fire into both main engine compartments upon a ground impact of |
10 or more Gs |
|
The windshield anti-ice system heating elements on the H-60 will heat the windshield surface to a temperature of |
70 - 115 degrees celcius |
|
If there is a loss of alternating current (AC) or direct current (DC) power, or if a windshield temperature sensor should malfunction, power to the H-60 windshield heating elements will be removed by the |
anti-ice controller |
|
To prevent scratching the windshield when you are performing an operational check of the H-60 windshield wiper system, keep the windshield wet or |
install a cotter pin in the wiper hold-off pin holes |
|
When the H-60 fuel boost pump is OFF, What prevents loss of engine fuel line prime? |
Check valve on the submerged fuel boost pump |
|
What directs the flow of fuel in the H-60 fuel system? |
Management package |
|
The H-60 internal auxiliary fuel tank bladder will ballistically self-seal a shrapnel hole up to |
20 mm |
|
On the H-60, when will fuel automatically transfer? |
One main fuel tank is at 887 pounds and the other is at less than 1,000 pounds |
|
How much power operates the centrifugal-type fuel transfer pumps on the H-60 helicopter? |
115 VAC |
|
When the PROBE STATUS UNLKD indicator extinguishes, what illuminates in the H-60 in-flight refuel system? |
RDY |
|
When the H-60 refuel probe is extended, where does the fuel from the retract side of the probe flow? |
No. 2 main fuel tank |
|
How much fuel should remain in the main tanks of an H-60 after the fuel dump pumps shut off? |
172 pounds |
|
What receives the signal from the No. 1 signal data converter in the H-60 fuel quantity system? |
Central display unit |
|
What is used as the dielectric in the H-60 fuel quantity indicating system? |
Fuel |
|
If, on an H-60 fuel system, you want to remove 28 volts direct current (VDC) power, de-energize the fuel warning conditioner relays, and cause the No. 1 and No. 2 FUEL LOW capsules to illuminate, you would press the FUEL |
IND TEST push-button on the miscellaneous switch panel |
|
What drives the alternating current (AC) primary generators on the H-60? |
Accessory gearbox modules |
|
What protection is not provided by the H-60 generator control units? |
Overfrequency |
|
The No. 1 and No. 2 direct current (DC) power converters on the H-60 helicopter receive power from |
the alternating current (AC) primary buses |
|
The H-60 direct current (DC) essential bus is connected to the battery bus by the |
No. 2 DC essential bus relay |
|
The H-60 instrument display system is not equipped with a |
steering command unit |
|
What are the most common causes of problems with H-60 pitot-static indicators? |
Leaks and faulty indicators |
|
The H-60 stabilator position indicator has a marked range of |
45 degrees DN to 10 degrees up |
|
What color are the cockpit floodlights? |
White and blue |
|
When the position lights switch is placed in the FLASH mode, how fast does the lights flash? |
70 to 90 times per minute |
|
The elastomeric bearings on the H-60 rotor hub for the main rotor (MR) are designed to |
allow the MR blades to droop, flap, lead, and lag |
|
When an H-60 damper and reservoir are fully serviced, the indicator will show full |
gold |
|
When the H-60 main rotor (MR) is rotating, centrifugal force will throw the droop stops out and permit increased vertical movement of the blades when the rotation percentage MR speed (Nr) is |
70 to 75 percent |
|
For de-icing, the H-60 main rotor (MR) blade has |
electro-thermal blankets |
|
If the pressure in an H-60 rotor blade is safe, the slots in the blade inspection method pressure indicator will be |
yellow |
|
The tail rotor (TR) blades on the H-60 are made of what material? |
Fiberglass and graphite |
|
What provides a signal to the de-ice controller for heating of the rotor blades? |
Outside air temperature (OAT) sensor |
|
What alerts the H-60 pilot when there is a de-ice system malfunction? |
FAIL flag on the ice-rate meter |
|
What connects the flight control components on an H-60? |
Special self-retaining bolts |
|
How can a pilot on an H-60 disengage the yaw trim when the airspeed is below 60 knots? |
Pressing the control pedal switches |
|
If either the yaw or roll trim actuator should jam, an H-60 pilot can control the inputs by |
slip clutches |
|
To prevent binding of the lateral clevis on the lower bellcrank during operation, make sure you install the lateral control tube with the adjustable clevis end |
on the top |
|
On an H-60, what screw threaded component's procedures are identified by **SC**? |
Safety Critical |
|
You are performing a tail rotor (TR) rig on an H-60. How many full turns of the pitch link barrel would you make to achieve a 3-degree bias? |
4 |
|
How many broken wires are allowed to remain in a critical fatigue area on an H-60 tail rotor (TR) cable? |
None |
|
The T700 engine module that extracts most of the energy from the exhaust gases for the output power is the |
power turbine |
|
What routes oil and fuel through the T700 engine accessory gearbox (AGB)? |
Internal passages |
|
The lubrication system in the T-700 engine on the H-60 is a self-contained, |
pressurized, recirculating, dry-sump |
|
The oil pump installed on the T700 engine is a |
seven-element, gerotor-type |
|
Where is the T700 engine oil tank located? |
Internally in the main frame |
|
To achieve optimum compressor performance, the T700 engine fuel system positions the compressor variable |
stator vanes |
|
Approximately how much internal bypass flow does the T700 fuel boost pump provide? |
Twice the maximum fuel-flow |
|
The type of fuel pressure the T700 engine electrical filter bypass sensor senses is |
differential |
|
The T700 engine hydromechanical unit does not have a(n) |
engine excited control |
|
The digital electronic control validates fault codes continually when the T700 engine is operated at |
flight idle or above |
|
During T700 engine operation, the history counter stops counting when the Ng (gas generator turbine rotor speed) drops below |
40 percent |
|
What type thermocouple harness is on the T700 engine? |
One-piece assembly with seven non-removable probes |
|
The T700 engine cable that conducts diagnostic signals for gas generator speed (Ng), fuel filter bypass indication, engine, chip detector signal, oil temperature, oil pressure signals, and anti-icing valve position is |
green |
|
The hydromechanical unit actuating system on the T700 engine will open the start bleed valve when gas generator speed (Ng) goes below |
87 percent |
|
The port on the T700 engine that provides bleed-air to the anti-icing and start bleed valve is the |
inboard |
|
At what horsepower is the H-60 auxiliary power unit (APU) rated? |
90 |
|
The component the turbine section on an H-60 auxiliary power unit (APU) uses to increase the hot gas flow velocity and direct the gas flow to the blades of the turbine wheel is a |
turbin nozzle |
|
On an H-60, how often does the electronic sequence unit (ESU) take a reading of the major parameters of the auxiliary power unit (APU)? |
Every 50 milli-seconds |
|
If the engines and rotors on an H-60 are not running, up to what temperature can you continuously operate the auxiliary power unit (APU)? |
51 degrees celcius |
|
When reinstalling a main transmission module on an H-60 power train, what must you do if you find the breakaway torque is less than 32-inch pounds? |
Replace the barrel nuts |
|
When installing a main module on an H-60 power train, the task will be easier if you line up the |
front mount bolt holes first |
|
If you find it is difficult to pull the input module free from the main module when removing the input module from an H-60 power train, what can you use to help break the input module loose? |
bolts |
|
If the H-60 main transmission lubrication system pressure exceeds 55 pounds per square inch (psi), the bypass valve starts to open and the extra oil returns back to the |
inlet side of the pump |
|
On the H-60, a thermal lockout prevents the main transmission oil filter bypass indicator button from extending when the oil temperature is below |
60 degrees Fahrenheit |
|
The H-60 intermediate gearbox transmits torque to the tail gearbox and also changes the angle of drive about |
58 degrees |
|
When the temperature switch in the H-60 intermediate gearbox (IGB) closes, it will turn on the INT XMSN OIL TEMP caution light. At about what temperature does this occur? |
140 degrees Celsius |
|
Vibration is best defined as the periodic back and forth movement of a component caused by |
unbalance or external forces |
|
When determining vibration, how do you convert hertz (Hz) into revolutions per minute (rpm)? |
Multiplying Hz by 60 |
|
Natural frequency is defined as the frequency at which an object or component will vibrate if it is |
excited |
|
On the H-60, what measurement term is used to display the level or amount of vibration present? |
Amplitude |
|
Medium-frequency vibrations on an H-60 helicopter are most commonly caused by the |
tail rotor (TR) drive shafts |
|
Normally, what causes high-frequency vibration on the H-60 helicopter? |
A damaged main module |
|
What should you hold down to bring the tip targets closer together for viewing when using an 8500C Balancer-Analyzer to track the main rotor (MR) blades on an H-60? You should hold down the |
Right arrow key |
|
Which Integrated Vehicle Health Monitoring System (IVHMS) component provides the interface between the IVHMS and the aircrew? |
Control Display Unit (CDU) |
|
What component of the Integrated Vehicle Health Monitoring System (IVHMS) controls the IVHMS-On-Board System (OBS)? |
Integrated Vehicle Health Management Unit (IVHMU) |
|
The Data Transfer Memory Units (DTMU) are available in sizes ranging from |
64 to 512 megabytes (MB) |
|
How many drive train and gearbox accelerometers are located throughout the H-60 helicopter? |
20 |
|
If you turn the pitch link three notches while making an autorotation adjustment on an H-60, how much will you change the main rotor speed (Nr)? |
One percent |
|
The allowable amount of exposed threads on the lower end of the pitch link after an autorotation adjustment on an H-60 is no more than |
three-fourths of an inch |
|
What is the tail rotor (TR) balance goal when using the Integrated Vehicle Health Monitoring System (IVHMS)? |
0.15 inches per second (IPS) |
|
What technical order (TO) should you consult for loading and offloading your helicopter on a transport aircraft? |
The -9 TO of the aircraft you are using for transport |
|
What is the purpose of air transport kits (ATK)? |
Facilitate quick teardown and buildup of you helicopter |
|
The calendar requirement to perform a H-60 aircraft weighing is at least once every |
30 calendar months |
|
What form is used to figure basic aircraft weight? |
DD Form 365-2 |
|
During weight and balance procedures, where can you find the scale correction data? |
On the laboratory inspection tag provided with the scale |
|
During weight and balance procedures, where can you find dimension E and F data? |
TO 1H-60(H)G-5 |