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Upskill / Aircraft Maintenance / Landing gear, wheels and brakes

Landing gear, wheels and brakes

Architecture, shock struts, retraction, tyres, brakes and MEL relief on transport aeroplanes, under CS-25 and 14 CFR Part 25

By Aerospace Garage Desk · In practice · 45 minutes · 24 narrated pages

What you will be able to do

  • ✓ Describe the architecture of transport-aeroplane landing gear and the CS-25 and 14 CFR Part 25 paragraphs that govern it, including tyre load ratings.
  • ✓ Explain how oleo-pneumatic shock struts work and service them correctly against a pressure-extension chart.
  • ✓ Describe normal and free-fall extension, proximity sensing and ground locks, using the official findings on the Boeing 787-8 G-ZBJB nose gear retraction.
  • ✓ Apply the AC 20-97B rules for tyre inflation, temperature effects, removal criteria and wheel safety.
  • ✓ Explain carbon and steel brakes, wear indicators, anti-skid, autobrake and brake temperature, and plan brake changes from wear rates.
  • ✓ Isolate common chapter 32 faults, jack and test the gear safely, and apply MEL relief with its (M) and (O) procedures.

Course content

Session 1 · Landing gear architecture and certification

1.1

  1. What the landing gear does · free preview
  2. Main gear, nose gear and bogies
  3. The certification basis
  4. Worked example: load per tyre against the tyre rating
Session 2 · Shock struts: how they work and how to service them

1.2

  1. How an oleo-pneumatic strut works
  2. Servicing a strut: the chart and the full service
  3. Strut faults, leaks and hard landings
  4. Worked example: a strut that sits too low
Session 3 · Retraction, extension, indication and ground safety

1.3

  1. Normal retraction and extension
  2. Alternate and free-fall extension
  3. Proximity sensors, air-ground logic and ground locks
  4. From the investigation file: Boeing 787-8 G-ZBJB
Session 4 · Wheels and tyres

1.4

  1. Tyre and wheel construction
  2. Inflation, nitrogen and pressure checks
  3. Inspection, removal and wheel safety
  4. Worked example: a cold-morning pressure check
Session 5 · Brakes, anti-skid and autobrake

1.5

  1. Carbon and steel brakes, and wear indicators
  2. Anti-skid, autobrake and alternate braking
  3. Brake temperature, fuse plugs and hot brakes
  4. Worked example: wear-pin readings and the replacement plan
Session 6 · Steering, jacking, troubleshooting and MEL relief

1.6

  1. Nose-wheel steering and towing
  2. Jacking and ground safety for gear work
  3. Troubleshooting and MEL relief
  4. Worked example: a hot-brake turnaround with the brake fans deferred

Who this course is for

  • Engineers servicing shock struts against a pressure-extension chart
  • Wheel and tyre shop staff applying inflation, removal and wheel safety rules
  • Maintenance planners forecasting brake changes from wear rates

You need: Basic aircraft systems knowledge and familiarity with MEL (M) and (O) procedures.

Upskill courses are for professional development and are not approved by any aviation authority. Learner Terms

Course content © Aerospace Garage Limited. All rights reserved.