Technical problems found during SSJ 100 operations
The main technical problems discovered during two years of SSJ 100 operations have been localized and are being eliminated. Sukhoi Civil Aircraft company (SCAC) representatives marked several design deficiencies that had been found since Aeroflot started flights with its first aircraft in June 2011.
According to SCAC, erroneous leakage detection system engagement, slat extension fault and landing gear up fault have been detected during SSJ 100 operations. The problem with erroneous leakage detection system engagement has been isolated. The manufacturer issued a service bulletin and implemented it for all aircraft at the production site. All the necessary changes will be implemented for the aircraft in operation as soon as possible, said SCAC in its statement.
To solve the slat extension fault the manufacturer did additional bench running to test its solution. It issued the bulletin and performed the necessary changes for design improvement on the four out of ten aircraft under operation. “The rest of the SSJ100 fleet to be handled upon schedule agreement with the carrier,” SCAC reported.
According to the manufacturer, landing gear up fault was not a systematical problem, as it was detected on two aircraft under operation. The problem is being solved in cooperation with Messier-Bugatti-Dowty, the landing gear supplier. “Messier-Bugatti-Dowty and SCAC prepared all the necessary documents and addressed them to Federal Air Transport Agency, Rosaviatsia, and to the carrier. Landing gear up fault is not qualified as an inflight emergency. All other aircraft checked, no landing gear problems have been detected,” SCAC noted.
The first SSJ 100 was delivered to Armenia`s Armavia in April 2011 and in June 2011, Aeroflot got its aircraft. Later SSJ 100s had been granted a type certificate in Europe, Indonesia and Laos.
