ACMP case study (safety in landing gear)

By s10219382 | Updated: Sept. 1, 2024, 6:48 p.m.

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Landing Gear Retraction
What is landing gear?
The landing gear is the principal support of the airplane when parked, taxiing, taking off, or landing. 
Landing gear consist of:
Why is the safety in landing gear retraction important?
On 21 September 2005, Jetblue flight 292 carrying 140 passengers had to make an emergency landing due to the malfunction of nose gear
As can see from the video, the nose landing gear was canted 90° towards the left.
Cause of incident:
Two of the four anti-rotation lugs on the upper support assembly had fractured and separated from the support assembly, and the rest of the two lugs contained cracks.
What are some safety features or test done to the landing gear?
The aircraft must be properly supported on jacks first before conducting the test
This video shows how does a landing gear retraction test looks like
The gear is then raised and lowered as though the aircraft were in flight while a close visual inspection is performed. 
All parts of the system should be observed for security and proper operation. 
Landing Gear Position Indicators
Landing gear position indicators are used to inform the pilot of gear position status.
Three green lights means it is safe to land. 
Blinking indicator lights indicate gear in transit.
Hao Siang reflection
In conclusion, I have learned the importance in the safety of landing gear. I have also learned some of the test done and safety features of the aircraft to ensure the safety in the retraction of the landing gear. Landing gear is the one carrying all the load on ground and plays a crucial role when landing, that's why it is important to check that the landing gear is working properly.
Hao Guang reflection
I have learnt the importance of maintaining the safety of landing gear. Usually, the landing gears are one of the components of an aircraft who experience the most stress during operations such as landing or take off, this means that they had to be checked for safety crucially, they are also the point of contact of the plane and the ground thus it is of great importance. Failure to maintain the safety of them would result in failure in the system where consequences can be very fatal.
Aircraft Landing Gear System Maintenance. (n.d.). Retrieved from Aeronautics guide: https://www.aircraftsystemstech.com/p/landing-gear-system-maintenance.html

Aircraft Landing Gear System Safety Devices. (n.d.). Retrieved from Aeronautics guide: https://www.aircraftsystemstech.com/p/landing-gear-safety-devices.html#:~:text=Landing%20Gear%20Safety%20Switch&text=This%20is%20a%20switch%20positioned,aircraft%20is%20on%20the%20ground.

Behind the scenes: Aircraft landing gear. (n.d.). Retrieved from Virgin Atlantic: https://flywith.virginatlantic.com/nl/en/stories/behind-the-scenes-how-does-aircraft-landing-gear-work.html

How did the nose landing gear of JetBlue Flight 292 get stuck sideways? (n.d.). Retrieved from Stack exchange: https://aviation.stackexchange.com/questions/14671/how-did-the-nose-landing-gear-of-jetblue-flight-292-get-stuck-sideways

KARKI, S. (2021, November 27). What happened with JetBlue Flight 292 with 140 passengers? Retrieved from Aviation Nepal: https://www.aviationnepal.com/what-happened-with-jetblue-flight-292-with-140-passengers/

Landing gear. (n.d.). Retrieved from Science direct: https://www.sciencedirect.com/topics/engineering/landing-gear

Landing Gear. (n.d.). Retrieved from Sky Library: https://www.skybrary.aero/articles/landing-gear

Landing Gear Swing - Landing Gear Retraction Test Airbus A320. (2019, May 14). Retrieved from Youtube: https://www.youtube.com/watch?v=vfGn_1shZAs

MAIN LANDING GEAR AND DOORS. (n.d.). Retrieved from Government Flying Service: https://www.gfs.gov.hk/j41-vr/ata_info.php?id=32-10-00&&lang=en

Reference
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ACMP case study (safety in landing gear)

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