Quantcast

Landing Gear Maintenance by Licensed Aircraft Engineers

Request a Private Jet Charter

Landing Gear Maintenance by Licensed Aircraft Engineers

Close up portrait of ground crew working at the airport fixing airplanes and checking the landing gear


Landing Gear Maintenance by Licensed Aircraft Engineers

Landing Gear Maintenance by Licensed Aircraft Engineers

By John Routledge


During inspection and before removing any accumulated dirt, aircraft mechanics must closely observe the area being inspected while the wingtips are gently rocked up and down. Excessive motion between normally close-fitting landing gear components may indicate wear, cracks, or improper adjustment. If a crack exists, it will generally be indicated by dirt or metallic particles which tend to outline the fault. Seepage of rust inhibiting oils, used to coat internal surfaces of steel tubes, also assists in the early detection of cracks. In addition, a sooty, oily residue around bolts, rivets, and pins is a good indication of looseness or wear.

a. Thoroughly clean and re-inspect the landing gear to determine the extent of any damage or wear. MRO teams may discover that some components require removal and complete disassembly for detailed inspection. Other components may require the assistance of stress engineers to do a specific check using an ndt inspection process such as dye penetrant inspection, magnetic particle inspection, radiographic, ultrasonic, or eddy current inspection. The frequency, degree of thoroughness, and selection of inspection methods are dependent upon the age, use, and general condition of the landing gear.

b. Qualified technical staff must inspect the aircraft or landing gear structure surrounding any visible damage, to ensure that no secondary damage remains undetected. Forces can be transmitted along the affected member to remote areas where subsequent normal loads can cause failure at a later date.

c. Prime locations for cracks on any landing gear are bolts, bolt holes, pins, rivets and welds. The following are typical locations where cracks may develop.

d. Most susceptible areas for bolts are at the radius between the head and the shank, and in the location where the threads join the shank.

e. Cracks primarily occur at the edge of bolt holes on the surface and down inside the bore.

f. The usual types of failure in riveted joints or seams are deformation of the rivet heads and skin cracks originating at the rivets' holes.

g. Cracks and subsequent failures of rod ends usually begin at the thread end near the bearing and adjacent to or under the jam nut.

h. Cracks develop primarily along the edge of the weld adjacent to the base metal and along the centerline of the bead.

i. Elongated holes are especially prevalent in taper-pin holes and bolt holes or at the riveted joints of torque tubes and push-pull rods.

j. Deformation is common in rods and tubes and usually is noticeable as stretched, bulged, or bent sections. Because deformations of this type are difficult to see, feel along the tube for evidence of this discrepancy. Deformation of sheet-metal web sections, at landing-gear component attachment points, usually can be seen when the area is highlighted with oblique lighting.

When an aircraft experiences a hard or overweight landing, the aircraft mechanics should perform a special structural inspection of the aircraft, including the landing gear. Landing gear support trusses should be inspected for cracked welds, sheared bolts and rivets, and buckled structures. Wheels and tires should be inspected for cracks and cuts, and upper and lower wing surfaces should be inspected for wrinkles, deformation, and loose or sheared rivets. If any damage is found, a detailed inspection is recommended.

Landing gear retraction tests

Periodically perform a complete operational check of the landing gear retraction system. Inspect the normal extension and retraction system, the emergency extension system, and the indicating and emergency warning system. Aerosopace systems engineers must determine that the actuating cylinders, linkage, slide tubes, sprockets, chain or drive gears, gear doors, and the up-and-down locks are in good condition and properly adjusted and lubricated, and the wheels have adequate clearance in the wheel wells. In addition, an electrical continuity check of micro-switches and associated wiring is recommended. Only qualified technical personnel should attempt adjustments to the gear position and warning system micro-switches. Follow the manufacturer's recommendations.

aviation-database.com [http://www.aviation-database.com/] has lots of resources for the aircraft industry. The web is a vast source of information. Aviation-database collects the industry into one huge database of contacts. TAC Europe TPS [http://www.aviation-database.com/TAC_Europe_and_Technology_Project_Services_TPS.htm] supplies licensed and qualified technical staff.


Article Source: https://EzineArticles.com/expert/John_Routledge/280216


http://EzineArticles.com/?Landing-Gear-Maintenance-by-Licensed-Aircraft-Engineers&id=2449333



John Routledge

Read More from Professional...

Passengers being greeted by flight crew

Mystery Shopping for Airlines to Improve Customer Loyalty

Mystery shopping can be a beneficial way for airlines to gain objective feedback. Typically, airlines only hear from angry customers when a problem arises. When it comes to air travel, emotions run hi ...

Portrait of beautiful stewardess standing against limousine and private jet at airport terminal

So You Want to Become a Flight Attendant!

So, you want to become a flight attendant. Or, more specifically, you think you want to become a flight attendant. Most aspiring flight attendants are eager to jump right into the application process ...

Portrait of a female travel agent in the suit and headset sitting indoors on the world map background

Online Travel Agent Career - 10 Reasons Why the Time is Now

Here are 10 solid reasons to look at travel agent careers as a means of taking control during this record-breaking recession. Stop depending on a boss to get you through the day. The title of this pos ...

Read More from Lifestyles...

Airplane in airshow maneuvers - RedBull Airshow at Oporto, Portugal

Competing in Air Shows and Air Races Against Autonomous Aircraft

Well, it's already happening, and most airline pilots and military pilots assumed it eventually would. Pilots are being replaced by unmanned aerial vehicles. And this makes sense because even though f ...

Famous Flyers

Famous Flyers

Featuring interviews with names you know and their favorite aircraft. These celebrities have worked hard to reach the tops of their professions and now enjoy the perks of private aircraft. Some of the ...

Female aerospace engineer working on helicopter in hangar

Ladies There Are Many Aerospace Engineering Scholarships For Women

Ladies, do you want to work in the aerospace field? Are you currently pursuing or planning to major in engineering? Well you are in luck. ...

Read More from PJC Flights of Fancy...

Man and woman sitting on a hill to enjoy the view of Cocora Valley in Salento, Colombia

Top 5 Winter Destinations in South America

Winter vacations in South America means you get the chance to experience the warmth of summer with shining bright sun and more accessibility to the outdoors. The time when the cool breezes and blizzar ...

Creative arrangement of colored sine vibrations, light and fractal elements as a concept metaphor on subject of sound equalizer, music spectrum and quantum probability

Noise Cancelling and Quantum Pressure Release Theory - Aerodynamic Usage Contemplated

Perhaps, you are aware of some of the interesting laws of physics which surround noise and vibrations, if so, you have probably experienced the equilibrium which is also used in modern-day headphones ...

Fast spinning hollow point bullet heading toward the viewer

How About a Spinning Fuselage for a Hypersonic Piloted Craft?

Stability is a really tough design problem for a hypersonic aircraft within the Earth's atmosphere, a vehicle traveling four to five times the speed of a bullet. A bullet inherently is stable partly b ...

Submit an Article

Limos.com
Limos.com

Submit Article

Image (1280px x 600px PNG or JPEG Files Only)
Thumbnail (300px x 300px PNG or JPEG Files Only)