Russia's United Aircraft is to modify all in-service Sukhoi Superjet 100s to eliminate a defect at the centre of a gear-retraction incident involving an Aeroflot aircraft
On 16 March the pilots of the aircraft - operating flight SU709 to Astrakhan - returned to Moscow Sheremetyevo shortly after take-off at 16:58, after a door of the nose landing-gear refused to close. The twinjet landed safely at 18:06 after having burnt excess fuel.
There were no injuries among the 65 passengers and four crew on board.
United Aircraft says the type requires a shop visit to address the problem, traced to a broken link in the nose-gear door's linkage. The nose gear strut itself was found to be intact, and it retracted and extended normally.
Work on all in-service Superjets - Aeroflot operates six and Armavia one - will be carried out "during one week", says United Aircraft. The door that failed to close after take-off is located aft, on the starboard side.
United Aircraft points out that the failure did not threaten flight safety "as confirmed by a Superjet failure analysis".