Industrial Training In

Biman Bangladesh Airlines Ltd.

Aero Overhaul&

Maintenance Support Service

Group : Aero CDepartment of Aeronautical Engineering

Military Institute Of Science and Technology

1Sunday,December 28, 2014

Aero OverhaulAero

Overhaul

InstrumentOverhaul

ShopSafetyShop

Seat Shop

Brake Shop

2Sunday,December 28, 2014

Maintenance Support Service

Engineering Tool Store

IndustrialPaint Shop

SheetMetal Shop

3Sunday,December 28, 2014

Specimens(Landing Gear Brakes) Observed

Model of The Aircraft

Components/Parts of The Landing Gear BrakeObserved

Airbus A310 •Observed the housing (contains 6 hydraulic pistons),•Wear indicating pin.

Boeing 777-200ER Observed the brake at a glance.

Boeing 777-300ER Observed the brake at a glance.

4Sunday,December 28, 2014

Fig-Brake of a Landing Gear

General Image of a Landing Gear Brake Nomenclature of a Landing Gear Brake

5Sunday,December 28, 2014

Hydraulics Used in Actuator of Landing Gear

6

actuator

Hyjet IV A plus : It is blue in color and is used in the actuator of the nose landing gear.

Fluid-41 : It is red in color and is used in the act-uator of the main landing gear.

Sunday,December 28, 2014

Tests Performed in The Brake Shop

• Rig Test

• Pneumatic Test and

• Hydraulic Test

7Sunday,December 28, 2014

Apparatus Observed in The Brake Shop

• Low Pressure Bench: Its maximum pressure range is 150 psi.

• High Pressure Bench: Its maximum pressure range is 6000psi.

• Special tool: It is used to engage some bolts to the brake.

• Torque Meter: Used to give a precise torque while tightening a bolt.

Note that after the final assembly, the brake needs to be locked by tying the bolts to each other with the help of a special wire.

8Sunday,December 28, 2014

Process How The Brakes Come to The Brake Shop And Get Released From The Shop

9

Reception of brake with an US tag

Verification of the complain and Identification of the problem

Proper Treatment and Reassembling of the brake

Final Check-up

Parts Control

Inspection Store

Assembling the brake into the aircraftSunday,December 28, 2014

Seat Repair ShopBiman Bangladesh Airlines

Asif Shahriar Nafi

Airline Seat• Passengers are accommodated during the flight in specially designed seats.

• Crew seats are different in configuration as compared to the passenger seats.

Types

Passenger Seats Crew Seats

# Business Class Seats # Pilot/Co-Pilot Seats

# First Class Seats # Navigator/Flight Engineer Seats

# Premium Economy Class # Flight Attendant Seats

# Economy Class Seats

Airline Seat Manufacturers • Geven

• Recaro

• ZIM Flugsitz GmbH

• EADS Sogerma

• EXPLISEAT

• Zodiac Seats

• Aviointeriors

• Acro Aircraft Seating

• European Aviation

• Thompson Aero Seating

• B/E Aerospace

• TIMCO Aerosystems

• DeCrane Aerospace

• TSI Aviation Seats

• Airpac Enterprises

Seat Maintenance Section

• Biman Bangladesh Airlines seat maintenance section is divided into several sub-sections.

Seat Refurbishment

Biman Bangladesh airlines seat repair workshop provides comprehensiveinspection, repair and overhaul of passenger, crew and pilot seats for Boeing777 (200ER &300ER), Airbus A310, Boeing 737 seat types to a consistently highstandard.

Boeing, Airbus, Douglas Seat Designs

• Boeing 777-200ER Seats

• Boeing 777-300ER Seats

Cont.

• Boeing 737-800 Seats • Airbus A310 Seats

Cont.

• McDonnell Douglas DC-10 Seats

Carpet Manufacture

• Biman Bangladesh Airlines is capable of supplying a range of aircraft carpets to meet the specific requirements.

Curtain Manufacture

• Design and manufacturing of an extensive range of aircraft curtains as well as structural attachments are also produced in workshop.

Cleaning Shop

• Seat Repair Section also performs individual dry or wet cleaning in the cabin,carried out as part of the complete maintenance service. In addition, theyhave in-house capabilities to wash, maintain seat covers, curtains, carpets;to freshen up and maintain leather seat covers; or to wash and maintainseatbelts, seat pockets, etc. Cleaning agents used on aircraft are solvents,emulsion cleaners, soaps, and synthetic detergents.

Aviation & Flight Life Safety Equipment

Presented ByNurul Huda

Roll:201222037

Airplane Seat Belt

Airplane Life Vest

Aircraft Life Raft

Aircraft Oxygen Mask

Airplane Seat Belt

Airplane Life Vest

Aircraft Life Raft

Aircraft Oxygen Mask

Instrument Overhaul ShopBiman Bangladesh Airlines

By Md.Sajedul Islam Sakir201222040

Instruments which Are checked:

1.Airspeed indicator

2.Mach speed indicator (Mach meter)

3. Altimeter

4. Vertical Speed indicator

5. Attitude of Aircraft indicator

6. Fuel indicator

7.Oxygen cylinder

8. Engine fire Extinguisher

Pitot static instrument

Vertical speed indicator(VSI)

Altimeter Mach meterAir speed

indicator(ASI)

Gyroscopic instrument

Attitude indicator

Fuel Flow Indicator Fuel flow meter are used with fuels to show the amount of fuel in

gallon or pound per hour.

The fuel flow indicator system consists of a fuel flow transmitter

located in the fuel line leading from the tank to the engine and

indicator located on the instrument panel.

Oxygen Cylinder

An oxygen tank is an oxygen storage vessel for oxygen, which is

either held under pressure in gas cylinders or as liquid oxygen in a

cryogenic storage tank.

Breathing oxygen is delivered from the storage tank to the users

by use of the oxygen mask.

Materials for oxygen cylinder:

1.Steel (DC-10)

2.Composite Fiber (Boeing -777)

Fire extinguisher Agents

Fire extinguishing agents are those chemicals that are injected into a compartment or area to extinguish a fire.

These agents work by either displacing the oxygen or chemically combining the oxygen to prevent combustion.

Some common fire extinguisher Are:

1. CO2

2.Freon ( A Chlorinated Hydrocadbon)

3. Halon 1301 ( Monobromotrifluoromethane, CF3Br)

Water (H2O) is also used as Fire extinguisher in aircraft.

SHEET METAL SHOP

Bymir sakib mustashin

PURPOSE

• Structural repair

Materials

•Steel•Aluminum Alloy•Composites

MANUAL

•Structural Repair Manual

TYPES OF REPAIRS

• The type of repair to be made will depend on the

materials, tools, amount of time available,

accessibility to the damaged area, and maintenance

level. The types of repair are permanent, temporary,

and one-time flight (ferry).

• Permanent repair is one that restores the strength of

the repaired structure equal to or greater than its

original strength and satisfies aerodynamic, thermal,

and interchangeability requirements, This ensures the

designed capabilities of the aircraft.

TYPES OF REPAIRS

• Temporary repair restores the load-carrying ability of the structure

but is not aerodynamically smooth or able to satisfy

interchangeability requirements. This repair should be replaced by

a permanent type as soon as possible in order for the aircraft to be

restored to its normal condition.

• One-time flight repair restores a limited load-carrying ability to the

damaged structure in order to fly the aircraft to a depot

maintenance activity for a permanent repair. When this type of

repair is made, the aircraft cockpit should be placarded to limit the

performance of the aircraft.

MACHINES & TOOLS USEDShearing Machine• Sheet metal forming machine that

used to cut sheet metal

• Hydraulically powered

• It works by first clamping the material with a ram

• A moving blade then comes down across a fixed blade to shear the material

Grinding Machine• A type of machining using an abrasive

wheel as the cutting tool

MACHINES & TOOLS USED

Rolling Machine• Roll different kind of metal sheet into

a round or conical shape

Shrinking & Stretching Tools• Shrinking reduces surface area by

thickening the sheet metal

• Stretching increases the surface area and causes it to become thinner.

MACHINES & TOOLS USEDTube Bending Machine• Round, rectangular or square tube

• Factors involved in the tube bending process is the wall thickness, tooling and lubricants needed by the pipe and tube bender to best shape the material.

Cable Swaging Machine• Attach fittings to pipes or cables

• Parts loosely fit together, and a mechanical or hydraulic tool compresses and conforms the fitting, creating a permanent joint.

MACHINES & TOOLS USED

Lathe Machine• Rotates the workpiece on its axis to

perform various operations such as cutting, sanding, knurling with tools that are applied to the workpiece to create an object which has symmetry about an axis of rotation.

Drilling Machine• Motor driven device, fitted with an end

cutting tool that is rotated with sufficient

power either to create a hole in a solid material.

MACHINES & TOOLS USED

Rivet Guns• Also known as a pneumatic

hammer, is a type of tool used to drive rivets.

Hand cutting machine

Paint Shop

Paint, or more specifically its overall color and application,is usually the first impression that is transmitted to someonewhen they look at an aircraft for the first time. Paint makesa statement about the aircraft the person who owns oroperates it. The paint scheme may reflect the owner’s ideasand color preferences for an amateur-built aircraft project,or it may be colors and identification for the recognition ofa corporate or air carrier aircraft.

Paint Shop:

Paint is more than aesthetics;-it affects the weight of the aircraft and protects the integrity of the airframe. The topcoat finish is applied to protect the exposed surfaces from corrosion and deterioration.

-a properly painted aircraft is easier to clean and maintain because the exposed surfaces are more resistant to corrosion and dirt, and oil does not adhere as readily to the surface.

Finishing Materials :A wide variety of materials are used in aircraft finishing. Some of the more common materials:-Acetone-Alcohol-Benzene-Methyl Ethyl Ketone-Linseed Oil

Primers:The importance of primers in finishing and protection isgenerally misunderstood and underestimated because it isinvisible after the topcoat finish is applied. A primer is thefoundation of the finish.Its role is to-bond to the surface

-inhibit corrosion of metal- provide an anchor point for the finish coats

Some of the various primer types are :

-Wash Primers-Red Iron Oxide-Gray Enamel Undercoat -Urethane

Preparation:

-Surfaces

-Primer and Paint-Adjusting the Spray Pattern-Applying the Finish That’s how the whole process of painting is done.

Industrial Tools Shop

The aviation maintenance technician spends a major portion of each day

using a wide variety of hand tools to accomplish maintenance tasks. Our

presentation contains an overview of some of the hand tools an aviation

maintenance technician can expect to use. An aviation maintenance

technician encounters many special tools as their experience widens; large

transport category aircraft have different maintenance tasks from those of a

light airplane, and special hand tools are often required when working on

complex aircraft.

This presentation outline the basic knowledge required in using the most

common hand tools used in aircraft repair and maintenance work. Sound

knowledge is required of these basic rules. The use of tools may vary, but

good practices for safety, care, and storage of tools remain the same.

It is called Engineering heart

Two types of tools

General tools & special tools

Screwdrivers:

1. Used for tightening or loosening screws or screw-head bolts

2. Use a screwdriver with care on the aircraft because the simple

act of slipping off the head of a screw can deeply scratch the

aluminum or magnesium skin, possibly resulting later in

corrosion

Flat screwdriver:

Philips screwdriver:

Hammers and mallets:

We should always choose the hammer appropriate for the job to avoid damaging

the work or the hammer itself.

Metal head hammer:

These are sized according to the weight of the head without the handle.

Soft faced hammer and mallet:

These have striking surfaces made of: wood, brass, lead, rawhide, hard rubber,

or plastic.

Pliers

Pliers are a hand tool used to hold objects firmly.

Monkey Pliers

Crimping plier:

Pipe wrench

A pipe wrench is a type of adjustable wrench that is used for gripping and

tightening or loosening rounded metal objects, like rods, bolt, or pipes.

Pipe Wrench

Spanner

A spanner is a tool used to provide grip and mechanical advantage in applying

torque to turn objects—usually rotary fasteners, such as nuts and bolts—or

keep them from turning.

Open end Spanner

Adjustable spanner

Socket

Torque wrench

Head aet

Mechanical finger

Speed handle

Ratchet handle

Spring balance

Plumb bob