M11.3 Flashcards
Do hinges connect flight controls to structure?
Yes
What is the purpose of a ball bearing in a hinge?
They compensate for misalignment
How many sleeves does a primary hinge have?
Only one, The normal hinge has two
How do you compensate for surface flutter with a mechanically driven control surface?
By static balancing (Fitting weights in front of the hinge line to offset the mass of the surface behind the hinge line)
How do you measure the deflection angle on any control surface?
By using an index plate or a inclinometer
What moves rapidly when they are actuated and can be very dangerous?
Flight control surfaces
When should warning notices be displayed on the flight deck controls?
When work is in process on control surfaces or the associated actuators
Where can a pylon be located?
Under each wing and/or in the tail/rear fuselage
What level of structure does the torque box belong to?
Primary
What are power plants divided into? And by using what achieves this division?
They are divided into cooling is owned by fireproof bulkheads (firewalls)
On most modern aircraft, how many flightdeck windows are there?
Six
How many main areas make up the wing structure and what are they called?
Three, the left wing box, centre wing box, right wing box
What are the main components of the left and right wing boxes?
Rear and front spar, ribs, upper and lower stringers and lower skin panels
On a cabin window, which pane of glass can hold the differential pressure and why?
Both, because either one could fail
On a cabin window, where is the vent hole located and what is its purpose?
On the inner pane at the bottom in the centre which means that the pressure between the panes of glass will equalise and also stop moisture buildup
What are the tracks that are used to attach seats known as?
L track or I track
What does ULD stand for?
Unitload device
What is a ULD used for?
It is used for loading luggage, freight and mail on widebody aircraft or some narrowbody aircraft
What are the five categories of doors?
Cargo door, main entry doors, service doors, cockpit doors, emergency exit doors
What are the three linings on a passenger door?
Lower lining, centre lining, upper lining
Which device prevents operation of the door handle?
Flight lock mechanism
Wing escape patches are also known by what name?
Plug doors
From the 1st of November 2003 which ICAO Annex was amended?
Annex 6
In-flight how long is a cockpit door allowed to be open for?
Only long enough for someone to pass through it
What can be found above a cockpit door?
A decompression flap
What is the spar web?
It is a plate that is located beside the upper and lower wing skin panels and forms the forward end of the wing box
What loads do ribs carry?
Torsion, compression and shear loads
What makes up the leading edge of structure?
Stiffners, ribs, and an upper/lower skin panel
What is the nose cap of a leading edge made of?
Aluminium alloy
The depth of the spars taper outwards to where?
To the wingtip
How are the forward, aft and side cargo doors operated?
Either electrically or hydraulically
Which way does the bulk cargo door open?
Inwards
What does the cargo door suspension consist of?
Hinge arms attached to the fuselage and door, a snubber connects the hinge arm and door to the ceiling of the cargo compartment on a bulk cargo door
What is the basic construction of a cargo door/what is the door made up of?
Aluminium covered structure consisting of an outer skin, internal frames, webs and stiffners.
What is the cargo door latching mechanism designed to be?
Failsafe
Where is the slide and girt bar are usually located?
Normally inside the door lower lining
What does the trigger mechanism consist of on a door?
Spring cartridge, trigger and emergency power roller
Where is the power reservoir located?
On the door damper of the door suspension
When must you remove the power reservoir from the aircraft?
If it has been used or if the pressure is low
What is the main function of the door torque tube?
To rotate the door to the cocked position
What are the four types of emergency doors?
Main entry doors, the upper deck doors, the emergency hatches and the overhead hatch
What is the purpose of the overhead hatch?
It provides an emergency exit for the flight crew from the flight deck
What does the passenger door look out mechanism prevent?
It prevents the door from being changed from manual to automatic or vice versa when the door is open
On a type two door locking mechanism how can we check to see whether the door is locked or unlocked?
There is a door locking indication
Where is the bulk cargo door located?
Lower aft right
What side do passengers usually board?
Left
What type of aircraft has one or two small emergency exits on the wings?
Smaller aircraft
What does the lower lining of the passenger door cover?
The escape slide and the survival kit
What is the job of the winglet and wingtip fence?
They improve the performance of the wing by increasing lift and reducing drag
What is a centre wingbox made of?
Front and rear spar and upper and lower skin panels
What are skin panels reinforced by?
Stringers
Which end of the fuselage is the tailcone from?
The aft end
Can the horizontal stabiliser be used as a fuel tank, yes or no?
Yes on some aircraft
What does the sleeve do on a surface hinge?
They prevent and overstress of the left and right hinge forks if the bolt is tightened
What is the purpose of the rear false spar?
It distributes the after main landing gear loads to the wing rear spar and the fuselage
What colour light do we get when operating the electric cargo doors and in what position does it illuminate?
It illuminates green when the door is fully open
How many doorlock sectors are on the side cargo door?
10
What is the purpose of a snubber?
The snubber connects the hinge arm and door to the ceiling of the cargo compartment
What might happen if you try to open the cargo door external handle with the inner retaining plate in position?
It could shear off the pin on the external handle
In manual mode what must the door hydraulic system be set to?
Hand pump mode
What component in a vent door mechanism uses Teleflex cables to operate?
The safety shaft
What loads does the forward pylon attachment transmit?
Weight and lateral loads
What forces does the engine forward mount transfer?
In the Y and Z axes (Weight and side loads)
