Aircraft Landing Gear Syllabus Diploma in Aircraft Maintenance Engineering, Regulation 2010
OBJECTIVES
- To familiarize about the landing gear function, gear arrangement, wheel arrangements.
- To provide guideline for servicing and bleeding of shock absorber assembly.
- To familiarize about the different type of wheels and their construction.
- To provide detail view about the construction, function, installation and servicing procedure of tube and tubeless tires.
- To give proper conception about different type of brake assemblies and their construction, brake bleeding procedure and anti-skid system.
- To familiarize with nose wheel steering system, purpose and function of shimmy dampers.
- To provide practical guideline about the landing gear extension and retraction cycle operation.
- Total system maintenance and servicing procedure.
SHORT DESCRIPTION
To give understanding about landing gear and wheel arrangements, shock strut construction and servicing, wheel type and their construction, tire construction, brake assembly type, construction and bleeding, Anti-skid system, noise wheel steering system, function of shimmy dampers, landing gear extension and retraction, whole system maintenance etc.
DETAIL DESCRIPTION
Theory
- ILLUSTRATE THE FOLLOWING GENERAL STATEMENTS
1.1 Sketch the Layout of Landing Gear Arrangement
1.2 Describe the Shock Struts
- STATE MAIN LANDING GEAR ALIGNMENT, SUPPORT, RETRACTION
2.1 Explain Alignment
2.2 Define Support
2.3 Illustrate Electrical Landing Gear Retraction System
2.4 Describe Hydraulic Landing Gear Retraction Systems
2.5 Describe Landing Gear Operation
- Describe Aircraft Landing Gear Emergency Extension System
- EXPLAIN LANDING GEAR SAFETY DEVICES
4.1 Define Safety Switches
4.2 Define Ground Locks
4.3 Understand Gear Position Indicators
4.4 Explain Nose wheel Centering Devices
- DESCRIBE NOSE WHEEL STEERING SYSTEM
5.1 Enlist Nose Wheel Steering Construction
5.2 Explain Nose wheel Steering Operation
5.3 Describe Follow up Linkage
- GIVE DETAILS OF SHIMMY DAMPERS
6.1 Explain Piston Type Shimmy Damper
6.2 Explain Vane-Type Shimmy Damper
6.3 Explain Steer Damper
- EXPLAIN BRAKE SYSTEMS
7.1 Explain Independent Brake Systems
7.2 Explain Power Brake Control Systems
7.3 Explain Pressure Ball-check Brake Control Valve
7.4 Explain Power Brake Control Valve (Sliding Spool Type]
7.5 Explain Brake De-booster Cylinders
7.6 Explain Power Boost Brake Systems
7.7 Explain Nose Wheel Brakes
- ILLUSTRATE BRAKE ASSEMBLIES
8.1 Demonstrate Single-Disk Brake.
8.2 Display Dual-Disk Brakes
8.3 Show Multiple-Disk Brakes
8.4 Explain Segmented Rotor Brake
8.5 Clarify Expander Tube Brake.
- Describe the Inspection and Maintenance of Brake Systems
9.1 State Gravity Method of Bleeding Brakes
9.2 Mention Pressure Method of Bleeding Brakes
- Express Aircraft Landing Wheels
10.1 Show Split Wheels
10.2 Explain Removable Flange Wheels
10.3 Describe Fixed Flange Wheels
10.4 Say about Wheel Bearings
- Describe Aircraft Tires
11.1 Enlist Aircraft Tire Construction
11.2 Define Tread
11.3 Show Prove Tread Reinforcement
11.4 Define Breakers
11.5 Show Casing Plies/Cord Body
11.6 Label Beads
11.7 Define Flippers
11.8 Identify Chafers
11.9 Identify Bead Toe
11.10 Show Bead Heel
11.11 Characterize Inner liner
11.12 Portray Tread Reinforcing Ply
11.13 Show Sidewall
11.14 Demonstrate Apex Strip
11.15 Enlist Aircraft Tire Care
- Explain Aircraft Tire Maintenance
12.1 Check Proper Inflation for Satisfactory Service
12.2 Verify for New Mountings
12.3 Allow for Nylon Stretch
12.4 Explain Tubeless Air Diffusion Loss
12.5 Understand Equalize Pressures
12.6 State Sources of Pressure Data
12.7 Understand Effects of Under Inflation
12.8 Observe Load Recommendations
12.9 Know about Nylon Flat-Spotting
- Explain Tire Inspection-Mounted On Wheel
13.1 Checking Leaks or Damage at Valve
13.2 Clarify Tread Injuries
13.3 Clarify Sidewall Injuries
13.4 When to Remove for Recapping
13.5 Understand Uneven Wear
13.6 Understand Wheel Damage
- Explain Tire Inspection-Tire Demounted
14.1 Give details Periodic Demounting
14.2 Clarify Probe Injuries
14.3 Clarify Repairable Injuries
14.4 Illustrate Sidewall Conditions
14.5 Show Bead Damage
14.6 Show Bulges-Broken Cords
14.7 Show Tubeless Tires-Bead Area
14.8 Show Liner Blisters
14.9 Define Thermal Fuse
- Describe Tube Inspection
15.1 Check for Proper Size
15.2 Check Valve Stems
15.3 Examine for Wrinkles
15.4 Observe Chafing
15.5 Inspect for Thinning
15.6 Inspect Fabric Base Tubes
- Describe Mounting and Demounting
16.1 Describe Tube Installation
16.2 Know about Lubrication
16.3 Requirement of Balance
16.4 Enlist Inflation Safety
16.5 Seating Tube Type Tires
16.6 Let Stand-Then Recheck
16.7 Enlist Demounting Safety
16.8 Handle Beads and Wheels With Care
16.9 Describe Tubeless-Split Wheels
16.10 Define Mounting
16.11 Define Demounting
16.12 Describe Tube Type Tires
16.13 Define Mounting
16.14 Define Demounting
16.15 Illustrate Removable Side Flange Drop Center Wheel
16.16 Define Demounting
16.17 Describe Smooth Contour rail Wheel Tire
16.18 Define Mounting
16.19 Define Demounting
16.20 Describe One Piece Drop Center Wheel.
16.21 Define Mounting
16.22 Define Demounting
16.23 Describe Flat Base Wheel Removable Flange Locking Ring
16.24 Define Mounting
16.25 Define Demounting
- Enlist Causes of Air Pressure Loss in Tubeless Aircraft Tires
17.1 Determine Venting of Tubeless Tires
17.2 Calculate Initial Stretch Period
- Explain the Wheel
18.1 Check Cracks or Scratches in the Bead Ledge or Flange Area
18.2 Check Corrosion or wear in Bead Ledge Area
18.3 Verify Poor Seating in Bead Area
18.4 Check for Knurls
18.5 Check for Porous Wheel Assemblies
18.6 Check for Sealing Surfaces
18.7 Check for Improper Installation of “0” Rings
18.8 Verify Wheel Tie Bolts
18.9 Clarify Tubeless Wheel Valve Holes
18.10 Verify Thermal Fuse Installation
- Describe Good Pressure Gage Practice
19.1 Describe Storing Aircraft Tires and Tubes
19.2 Avoid Moisture, Ozone
19.3 Discover Fuel and Solvent Hazards
19.4 Describe Stores in Dark
19.5 Tire Racks Preferred
19.6 Identify with Safe Tube Storage
- Describe Repairing
20.1 Understand Recapping Aircraft Tires
20.2 Determines Tires that May be Recapped
20.3 Determine Non recap able Tires
20.4 Determine Repairable Aircraft Tires
20.5 Determine Non repairable Aircraft Tires
20.6 Understand Spot Repairs
- Give Details of Operating and Handling Tips
21.1 Details of Taxiing
21.2 Tips of Braking and Pivoting
21.3 Describe Takeoffs and Landings
21.4 State the Condition of Landing Field
21.5 Define Hydroplaning
- Write about Tube Repair
- Write about Side wall Inflated Aircraft Tires
- Write about Tire Inspection Summary
- Explain Antiskid System
25.1 Explain Normal Skid Control
25.2 Define Skid Control Box
25.3 Define Skid Control Valves
25.4 Understand Pilot Control
25.5 Explain Locked Wheel Skid Control
25.6 Explain Touchdown Protection
25.7 Explain Fail-Safe Protection
- Explain Landing Gear System Maintenance
26.1 Understand Landing Gear Rigging and Adjustment
26.2 Describe Adjusting Landing Gear Latches
26.3 Mention Landing Gear Door Clearances
26.4 Understand Landing Gear Drag and Side Brace Adjustment
26.5 Describe Landing Gear Retraction Check
PRACTICAL
- To provide practical knowledge on shock absorber assembly
- To be familiarized with following of Brake Assemblies
2.1 Show Skill to Determine Single-Disk Brake.
2.2 Show Skill to Determine Dual-Disk Brakes
2.3 Show Skill to Determine Multiple-Disk Brakes
2.4 Show Skill to Determine Segmented Rotor Brake
2.5 Show Skill to Determine Expander Tube Brake.
- To get practical knowledge on Aircraft Landing Wheels
3.1 Show Skill to Determine Split Wheels
3.2 Show Skill to Determine Removable Flange Wheels
3.3 Show Skill to Determine Fixed Flange Wheels
3.4 Show Skill to Determine Wheel Bearings
- To Be Acquainted With Aircraft Antiskid System
- 5. To Provide Practical Knowledge On tire Inspection
- Tube Inspection As Per The Following Notes
6.1 Show Skill to Determine Proper Size
6.2 Show Skill to Determine Valve Stems
6.3 Show Skill to Determine Wrinkles
6.4 Show Skill to Determine Chafing
6.5 Show Skill to Determine Thinning
6.6 Show Skill to Determine Fabric Base Tubes
REFERENCE BOOKS
- Airframe Hand Book AC-65-15, FAA Publication, USA
- Haeco training manual: Training department, Australia
- A&P Tech, General Text Book: Jeppesen, USA
Enamul Haque Anwar Hossain Khan
OJT Instructor Deputy Chief Instructor
