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109 Cards in this Set
- Front
- Back
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What type is the landing gear of the c130 |
Tricycle type with steerable dual nose wheels and tandem main wheels |
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How are the main tyres moved |
Hydraulically powered to move screwjacks |
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How is the nose wheels moved |
Single actuator |
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Caution about material of landing gear and components |
Made from high strength carbon steel which is susceptible to hydrogen embrittlement if in contact with inappropriate solvents and paint strippers |
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What type of oleo do rnzaf aircraft have |
Soft oleo |
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What do the mlg shoes do |
Provide a sliding attachment for the mlg and consist of upper and lower assemblies |
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What surface is designed to wear in mlg |
Surface on shoes instead of tracks |
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Warning about mlg shoes |
Correct adjustment is vital for successful operation of the retraction/extension system |
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Purpose of drag pins |
Form a close tolerance load path between the landing gear and the aircraft structure |
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Purpose of torque struts |
Designed to keep the forward and aft strut positions on each side and consequently wheels aligned for and aft |
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What are the mlg doors mechanically linked to |
Mlg for open and close |
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Caution about mlg doors |
Viewed from a distance it is difficult to tell whether an outer door is connected to its mechanism properly |
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Purpose of drag pins |
Form a close tolerance load path between the landing gear and the aircraft structure |
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Purpose of torque struts |
Designed to keep the forward and aft strut positions on each side and consequently wheels aligned for and aft |
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What are the mlg doors mechanically linked to |
Mlg for open and close |
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Caution about mlg doors |
Viewed from a distance it is difficult to tell whether an outer door is connected to its mechanism properly |
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What is the purpose of the hyd fluid in the mlg oleos |
Provides control rate of fluid flow/movement |
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At what pressure does the emergency gearbox and brake assemblies lock each retraction/extension mechanisim |
Below 600psi |
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At what pressure does the emergency gearbox and brake assemblies lock each retraction/extension mechanisim |
Below 600psi |
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How does the emergency drive facility work |
Achieved through sliding clutch which transfers drive from motor/brake to a manual drive mechanisim |
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What is the note about tee handle for manual drive of landing gear |
Tee handle is safety wired to provide indication of inappropriate activation |
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Caution about the manual drive system (maintenance) |
Is commonly used for moving main gear during maintenance. Failure to follow correct procedure will cause serious damage to drive mechanisim |
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Where are the right angle gearboxes and what do they do |
Mounted between the landing gear bas to convert horizontal shaft rotation into vertical |
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Where are the right angle gearboxes and what do they do |
Mounted between the landing gear bas to convert horizontal shaft rotation into vertical |
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During an emergency why is the rear strut disconnected first |
As it initiates the opening of the fear doors |
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Where are the right angle gearboxes and what do they do |
Mounted between the landing gear bas to convert horizontal shaft rotation into vertical |
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During an emergency why is the rear strut disconnected first |
As it initiates the opening of the fear doors |
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What is mounted at the end of the screwjack |
Bumper stop to soften impact of the ball nut reaching the end of its travel |
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Warning about bumper stop dissasembly |
Care is required due to the presecene of an extrememly powerful ring speing |
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Warning about bumper stop dissasembly |
Care is required due to the presecene of an extrememly powerful ring speing |
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Caution about mlg retraction and extension lubrication |
Lack of lubrication and cleanleness can cause it to malfunction |
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Warning about bumper stop dissasembly |
Care is required due to the presecene of an extrememly powerful ring speing |
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Caution about mlg retraction and extension lubrication |
Lack of lubrication and cleanleness can cause it to malfunction |
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What causes the nlg to center before retraction |
Cam arrangement which is engaged at full strut expansion |
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Warning about bumper stop dissasembly |
Care is required due to the presecene of an extrememly powerful ring speing |
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Caution about mlg retraction and extension lubrication |
Lack of lubrication and cleanleness can cause it to malfunction |
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What causes the nlg to center before retraction |
Cam arrangement which is engaged at full strut expansion |
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What allows the nlg to free the steering mechanisim from the wheels |
Scissor link |
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Warning about bumper stop dissasembly |
Care is required due to the presecene of an extrememly powerful ring speing |
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Caution about mlg retraction and extension lubrication |
Lack of lubrication and cleanleness can cause it to malfunction |
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What causes the nlg to center before retraction |
Cam arrangement which is engaged at full strut expansion |
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What allows the nlg to free the steering mechanisim from the wheels |
Scissor link |
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Note about nlg door rigging |
Incorrectly rigged nose gear doors can have a detrimental effect on the operation of the gear itself |
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What type of lock is the uplock |
Hydro/mechanical latch assembly |
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What causes the light to illuminate on the gear handle |
When the selector handle does not match the gears actual position |
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What causes the light to illuminate on the gear handle |
When the selector handle does not match the gears actual position |
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What prevents inadvertant operation of gear selector |
Lever lock mechanism prevents inadvertent operation on ground |
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How is the control valve controlled and actuated |
Electrically controlled Hydraulically actuated |
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Purpose of the emergency extension valve |
Utilises aux pressure to the release side of the nlg actuator uplock |
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What stops inadvertent operation of the gear on the ground |
Touch down relay |
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How many ways to emergency extend the mlg |
4 |
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2 times you get a warning about gear |
When flaps are moved below 75 percent and gear is up When throttles are retarted to flight idle with gear up |
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Which one of these can you silence the horn |
Flight control throttle position |
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2 ways to silence horn on retraction |
Pull cb Extend gear Retract flaps and silence |
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Maximum turn angle of nlg |
60 degrees each side of center |
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Pressure that the shutoff valve maintains in the nlg control assy |
40 to 70psi within the run around circuit |
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What does this run around circuit provide |
Shimmy dampening |
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What does the accumulator allow for to do with irregular movement of steering actuators |
Allows for volumetric changes |
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What does it do |
Directs system pressure to either the up or down side of the landing gear system |
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Warning about steering actuators during testing |
Stay clear as they make large sudden movements |
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Where does the nlg get its steering by |
Way of nose gear downlines |
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What does this ensure |
The steering system is in operative when gear is retracted |
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2 ways to silence horn on retraction tests |
Pull cb Extend gear Retract flaps and silence |
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What type of brake units are the mlg brakes |
High pressure, low displacement, multi disk |
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What can incorrect rigging of pedal cable interconnect system do |
Park brake to be difficult to apply |
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When is brake hydraulic system require bleed |
Any disturbance of brake hyd system down stream of brake control valves |
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What do the accumulators do |
Store fluid under pressure to give during limited brake operation should the hyd system fail |
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What causes the park brake to disengage the anti skid system |
Micro switch behind pedals |
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Pressure range applied to brakes from brake control valve |
1700-2200 psi |
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What is there to control the valve in the event of a solenoid fail |
Override buttons which give manual control over solenoid valves |
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Where are the normal brake fuses located |
In the armpit panel above landing gear |
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Where are the emergency brake fuses located |
On the underside of the torque strut on each respective side |
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Wjat do the brake fuses do |
To prevent complete loss of system fluid should a leak occur at the brake units |
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Where are the shuttle valves located |
On each brake unit |
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What does the shuttle valves do |
Actuates and closes of either normal or emergency directing pressure and sends the other to the brake unit |
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Purpose of the anti skid system |
To obtain optimum braking irrespective of runway conditions |
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5 components of anti skid system |
Four wheel transducers Two dual hyd control valves Two electronic control boxes Control switch and indicator light Teat panel and indicators |
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3 features of the anti skid system |
Anti skid control Threshold control Positive locked wheel protection |
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Anti skid control meaning |
Deceleration rate of wheel is limited to a predetermined value related to wheel rpm |
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Threshold control meaning |
During approach brakes are prevented from being applied until aircraft is on ground and wheels are rotating faster than 15knots |
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Does the spool exit the detent and go to neutral if up is hit when no hyds are applied |
No as it requires hyd pressure to move the spool |
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Positive locked wheel protection meaning |
If one wheel locks up the brake is released and not applied until spinking at same speed again |
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4 times anti skid is inoperative |
Parking brakes applied Emergency brakes selected System is turned off Power is off/lost |
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What is vital for anti skid |
Correct bleeding of system |
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What does the anti skid test facility do and when |
Provides test function in all modes of flight or on ground by overriding what ever condition aircraft is in |
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If brakes are on during anti skid teat what happens |
Brakes will be released momentarily |
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What is the purpose of the flow regulator/restrictor valves |
Controls the speed of the main gear retraction to prevent cavitation when it is extending |
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Do the mlg uplock brakes require bleeding on instal |
Yes |
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Where are the two snubber valves fitted |
Front strut on the beams |
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What does the snubber valve do |
Slow the speed of the gears just before they reach there upper limit stops (last .75” of travel) |
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Where are the nlg flow regulators located and purpose |
Retract line to nlg actuator Control speed of both the retraction and extension cycles |
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Where is the nlg emergency extension system valve located |
Left fueslage wall aft of 245 |
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What does the nitrogen in the mlg provide |
Absorbs shocks from landing |
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What does the spring loaded accumulator do |
Maintains pressure within the run around circuit to provide shimmy dampening |
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4 ways of lowering mlg |
Normal electro/hydraulic in flight deck Override buttons on valve Removing torque shaft manually Manual drive |
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4 ways of lowering mlg |
Normal electro/hydraulic in flight deck Override buttons on valve Removing torque shaft manually Manual drive |
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What to do after emergency hud mlg extension |
Flush utility system Top up aux |
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4 ways of lowering mlg |
Normal electro/hydraulic in flight deck Override buttons on valve Removing torque shaft manually Manual drive |
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What to do after emergency hud mlg extension |
Flush utility system Top up aux |
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3 ways to extend nose landing gear |
245 bulkhead manual/hyd handel - utilise aux pressure Normal operation of handle Emergency release handle on floor of flight deck - falls by gravity |
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4 ways of lowering mlg |
Normal electro/hydraulic in flight deck Override buttons on valve Removing torque shaft manually Manual drive |
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What to do after emergency hud mlg extension |
Flush utility system Top up aux |
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3 ways to extend nose landing gear |
245 bulkhead manual/hyd handel - utilise aux pressure Normal operation of handle Emergency release handle on floor of flight deck - falls by gravity |
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What can happen if you touch nlg steering wheel handle during tow operations |
Can block flow and cause damage |
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4 ways of lowering mlg |
Normal electro/hydraulic in flight deck Override buttons on valve Removing torque shaft manually Manual drive |
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What to do after emergency hud mlg extension |
Flush utility system Top up aux |
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3 ways to extend nose landing gear |
245 bulkhead manual/hyd handel - utilise aux pressure Normal operation of handle Emergency release handle on floor of flight deck - falls by gravity |
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What can happen if you touch nlg steering wheel handle during tow operations |
Can block flow and cause damage |
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How much though does the brake wear indicator use when max effort braking |
.012” |
