CP-3077 MLG Shimmy Damage on Landing
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B737-300, CP-3077 (28563/2921) operated by BoA Boliviana suffered damage to the left main landing gear during a severe shimmy on the landing roll at La Paz runway 10 on 3 Aug 2019. Photographs show the left main landing gear has rotated approximately 45 degrees from its normal position.
There were no reported injuries. The Bolivian Accident Investigation Unit have started an investigation.
It is probably significant that this event occured at La Paz, this airport has an elevation of 13,325ft so the TAS on landing is abnormally high. Follow this link for a detailed description of operations into La Paz.
There have been several MLG failures to 737 Classics in recent years from shimmy events.
- OE-IAG 737-400F MLG Torsion Link Failure on landing
- EP-TBJ Taban 737-400 gear collapse on landing
- JY-JAQ 737-400 Soft Landing and RH MLG collapse
- Peruvian Airlines 737-300 OB-2040-P MLG collapse on landing at Cuzco
- Peruvian Airlines 737-500 OB-2041-P MLG collapse on landing at La Paz
- HK-5139 737-400F MLG Failure on landing
- AP-BJO 737-400 Runway excursion on landing
Perhaps notably, the final report of JY-JAQ which cited the following contributary factors:
- High altitude airport
- An overly soft landing, allows the landing gears to remain in the air mode longer, which makes them more vulnerable to shimmy
- Touchdown with a closure rate of 1 fps, which is considered overly soft and may increase the risk of shimmy torsional forces
- High ground speed at touchdown
All of the information, photographs & schematics from this website and much more is now available in a 374 page printed book or in electronic format.
*** Updated 05 Aug 2023 ***
