This site has previously discussed topics regarding landing gear, such as The Center Main Landing Gear Not Extending Landing Gear Override Trigger Nose Landing Gear of Several Aircraft Types Today, we will continue with this theme.

Recently, while plane spotting in Osaka, I noticed a phenomenon. When a Boeing 767-300ER retracted its landing gear after Takeoff, the left and right sides did not retract simultaneously, which was quite unexpected.

Below are four consecutive photos. Fig 1, It can be seen that the right landing gear door opens slightly earlier than the left.

Fig 2, After both doors are open, the landing gear retraction begins, but the right side is slightly ahead of the left. The right side has already started retracting, while the left is still in the vertically extended state. Fig 3, When retracted halfway, although the difference is minimal, one can observe that the angle on the right differs from that on the left. Fig 4, Following this, the right landing gear has already started entering the fuselage, while the left side is still outside.

On this day, I also photographed the A321, Boeing 737, 777, and ERJ170, among others, but for all of them, the left and right landing gear retracted simultaneously.

Boeing 777-300 A321neo Boeing 737-800 ERJ170

Of course, I only photographed one 767 that day, so this does not necessarily represent all 767s. I plan to continue observing this phenomenon in the future.