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MX Testing > Blade Fold Wing Stow > Flashcards

Blade Fold Wing Stow Flashcards

1
Q

In case of hydraulic pressure loss or a sequence time out occurs, select __________ after determining there are no other faults and continue task.

A

retry

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2
Q

The rotor positioning unit is a/an __________ controlled rotary drive unit.

A

Electrohydraulic

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3
Q

The rotor positioning unit is mounted to the __________.

A

MWGB

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4
Q

The blade fold control unit is mounted on the __________.

A

Central De-ice Distributor

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5
Q

The un-commanded rotation is not electrically controlled and can only be stopped by removing__________.

A

No. 3 Hydraulic pressure

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6
Q

If a BFWS fault OID is displayed, do not select override until the problem __________.

A

Is determined

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7
Q

Prior to releasing the BFWS switch, what must you observe on the MFD?

A

Sequence complete.

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8
Q

How many Wing Lockpin cat’s eyes are on the CV-22?

A

4.

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9
Q

Engaging the wing lockpins will cause bearing damage due to increased forward CG load in which position?

A

Airplane Mode.

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10
Q

What type of inspection is due on the BFWS system after 5, 10, 25, 100, 500, 1000 Cycles?

A

Adjust Wing Stow Cable Tension.

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11
Q

Upon completion of a wing stow, what must the maintainer do?

A

Verify the cat eyes.

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12
Q

The components of the Blade Fold System consist of the __________ and the __________.

A

Rotor Positioning Unit/Blade Fold Control Unit.

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13
Q

Hydraulic power for capstan drive and lock pin actuation is provided by the __________ system and controlled by __________ through utility ________

A

No. 3 utility Hydraulic System/Flight Control Computer No. 3/Isolation valve

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14
Q

What degree azimuth angle, measured about the wing centerline, does the rotor positioning unit position the red blade for Blade Fold/Wing Stow?

A

7 Degrees.

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15
Q

What major component of the wing stow system provides force to the cable assemblies to cause the flex ring to rotate?

A

Capstan drive.

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16
Q

The BFWS system shall not be operated in winds greater than __________.

A

45 Knots

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17
Q

__________ are incorporated to prevent in-flight coupling and locking of the R.P.U.

A

Interlocks

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18
Q

The wing interface unit is a related component to the BFWS system. It provides the __________/__________ between the __________ and the advanced mission computer.

A

Electronic Command/Status/Wing Stow Control Module.

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19
Q

The BFCU controls and sequences the operation of the blade fold assembly by responding to the signals from the __________, by responding to inputs from the __________ __________ and by controlling the __________.

A

Mission Computer/status interface/stow control module.

20
Q

What three things must you have before wing stow is available?

A

Weight on wheels, ECL’s at off, RPM at 0.

21
Q

There are __________ blade latch sensors, __________ blade fold sensors, and __________ pitch lock pin sensor(s) per hub.

A

6/2/1.

22
Q

What determines and continuously monitors the current configuration of the proprotors, nacelles, flaperons, and wing during Blade Fold/Wing Stow operations?

A

Advanced Mission Computer.

23
Q

There are __________ shear pin monitors per hub. They are a __________ device that is mounted on the planetary assembly. The shear pin monitor senses __________ and __________ the blade actuator assembly.

A

six/Electromechanical/System Jam/Prevents Overloading.

24
Q

Uncommanded wing rotation may occur when the BFWS switch is released. The uncommanded rotation is not electronically controlled, and can only be stopped by __________ from the aircraft. If uncommanded wing rotation occurs, remove __________ immediately. Failure to comply may result in aircraft damage or personnel injury.

A

removing system 3 hydraulic power/system 3 hydraulic power

25
Q

What must you observe prior to converting the nacelles to horizontal with the thumbwheel?

A

Blades are in inverted Y.

26
Q

When a halt occurs, the step will either be ________ or ________. A ________ halt detects failure modes during wing and nacelle movement when major AC damage may occur.

A

red/yellow/red

27
Q

It is permissible to operate the BFWS system while the aircraft is on jacks.

A

FALSE.

28
Q

During BFWS the rotor brake should be in the __________ position.

A

off

29
Q

The Wing Stow system operates on 28 VDC supplied from DC bus __________ electrical systems?

A

3

30
Q

Which hydraulic system provides 5000 PSI for indexing and stowing during BFWS?

A

System 3.

31
Q

During BFWS the turret mounted wing can be rotated

A

90 degrees

32
Q

During the BFWS process you get a system halt, what should you do?

A

Get a qualified person designated by the unit to troubleshoot the system.

33
Q

Hydraulic power for the capstan drive and lock pin actuation is provided by the ________ system and controlled by ________ through utility _______.

A

No. 3 hydraulic/Flight control computer No. 3/Isolation valve

34
Q

Whenever the wing flight ready switch is failed and the wing angle is less than _______, JASS software will incorrectly assume the wing is in ________.

A

57 degrees/flight ready.

35
Q

What is the purpose of ERAC 36?

A

Provide procedural steps required to avoid an/or correct the undefined state status at blade fold.

36
Q

If the AMC does not receive all four lock pin signals within ________ a ________ message is displayed on the CDU.

A

5 seconds/BFWS halt

37
Q

What caution do you get if you have BFWS alert?

A

BFWS NOT FLIGHT READY

38
Q

When performing blade fold wing stow operations and the nacelles have not completely lowered by the time the wing reaches ________ a switch interrupts rotation of the wing by halting the capstan drive.

A

57 degrees

39
Q

The purpose of ERAC 234 is to prevent damage to the________.

A

spherical bearing

40
Q

The purpose of ERAC 224 is to provide a ________.

A

Warning before any powered wing stow/unstow

41
Q

The warning/caution added to the IETM for inspecting the PRGB lockout tool prior to converting nacelles comes from which of the following?

A

ERAC 255.

42
Q

“Caution: Ensure PRGB lockout tool is not installed prior to converting nacelles. Failure to comply will result in severe damage to the ________.”

A

Drive train

43
Q

The wing stow isolation valve controls what?

A

Lockpin control module and wing control module.

44
Q

After a full stow, you release the BFWS button what is displayed on the MFD?

A

Full Stow

45
Q

What is the purpose of the extend lock release lever?

A

Retract the lockpin.

46
Q

What switches notify of the wing position?

A

Azimuth.

MX Testing (2 decks)

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