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IMPORTANT: you cannot launch if the target INC is lower than your Latitude. For MIR there is no solution as it's INC is at 26.96° (lower than your latitude wich is 28.59°) this is why we launch at 90° and align plane later.
TIPS: You can find the launch azimuth formula and the DGIV calculator way of doing it in the check-list MFD « 12 - flight computer operation »