Method for controlling at least one manoeuvre of deploying or retracting at least one landing gear of an aircraft which is carried out in response to a deploying or retracting manoeuvre order, said method for controlling at least one manoeuvre of deploying comprising at least the following steps: a. Pulling on the doors of the bay to relieve the door retaining hook; b. Actuating the door hook or hooks to free the doors; c. Opening the doors; d. Pulling on the landing gear to relieve the landing gear retaining hook; e. Actuating the landing gear hook to free the landing gear; f. Moving the landing gear to bring it from the retracted position to the deployed position, causing the landing gear to be automatically locked when it reaches the deployed position; g. Closing the doors, causing the retaining hook to be automatically rearmed when the doors reach the closed position; said method for controlling at least one manoeuvre of retracting comprising at least the following steps: a. Pulling on the doors of the bay to relieve the door retaining hook; b. Actuating the door hook or hooks to free the doors; c. Opening the doors; d. Unlocking the landing gear; e. Moving the landing gear to bring it from the deployed position to the retracted position, causing the landing gear hook to be automatically rearmed when the landing gear reaches the retracted position; f. Closing the doors, causing the door hook or hooks to be automatically rearmed when the doors reach the closed position; said method comprising the following actions: - before the manoeuvre order is received, and in response to the detection of a flight situation suitable for the occurrence of a manoeuvre order, executing at least one of the first three steps (a, b, c) of the manoeuvre in question; - once the manoeuvre order has been received, executing the remaining steps of the manoeuvre; and the flight situation in which the deploying manoeuvre order may occur being detected when the following logical condition is recognised as true by a computer: - the speed of the aircraft is below a given threshold speed Vs2; - and the height above the ground is below a given threshold height H1, or the flaps are deployed. a. Pulling on the doors of the bay to relieve the door retaining hook; b. Actuating the door hook or hooks to free the doors; c. Opening the doors; d. Pulling on the landing gear to relieve the landing gear retaining hook; e. Actuating the landing gear hook to free the landing gear; f. Moving the landing gear to bring it from the retracted position to the deployed position, causing the landing gear to be automatically locked when it reaches the deployed position; g. Closing the doors, causing the retaining hook to be automatically rearmed when the doors reach the closed position; a. Pulling on the doors of the bay to relieve the door retaining hook; b. Actuating the door hook or hooks to free the doors; c. Opening the doors; d. Unlocking the landing gear; e. Moving the landing gear to bring it from the deployed position to the retracted position, causing the landing gear hook to be automatically rearmed when the landing gear reaches the retracted position; f. Closing the doors, causing the door hook or hooks to be automatically rearmed when the doors reach the closed position; - before the manoeuvre order is received, and in response to the detection of a flight situation suitable for the occurrence of a manoeuvre order, executing at least one of the first three steps (a, b, c) of the manoeuvre in question; - once the manoeuvre order has been received, executing the remaining steps of the manoeuvre; - the speed of the aircraft is below a given threshold speed Vs2; - and the height above the ground is below a given threshold height H1, or the flaps are deployed.