SITTI systems are designed to work without interruption for tens of years, thus guaranteeing customers extremely high reliability figures. This is one of the things SITTI is particularly proud of, because it gives clients the perception of a stable and always available system, which he can rely upon. Of course this also increases the positive reputation of SITTI far beyond South America.
As said above, SITTI VCS (Voice Communication System) systems are very reliable, so that unit replacement and fault repair activities are quite infrequent. The major CINDACTA Air Traffic Control centres in Brazil (Brasilia, Curitiba, Recife and Manaus) are under a maintenance contract with SITTI that provides technical, functional and system assistance to cope with any possible degradation or disruption.
The current maintenance contract envisages the physical presence of a SITTI engineer at each control centre during working hours 5 days a week, accompanied by the constant 24/7 availability on call in case of any urgency. Should anything serious occur that cannot be solved over the phone, a qualified engineer is guaranteed to be on site within 60 minutes.
Programmed maintenance activities are scheduled to be executed daily, weekly or monthly, according to the system parts to be supervised. Every month, a written report is prepared and handed over to the customers, listing all activities carried out and their outcome.
The current maintenance contract also includes the same kind of service for the CRCEA-SE centre in Sao Paulo and the APP military and civil control centre responsible for the Sao Paulo and Rio de Janeiro areas. In addition, an annual similar maintenance program applies to the other about 30 DTCEA centres providing APP and TWR service, with constant helpdesk contacts and on site intervention within 24 hours in case of blocking problems.