A starter air valve comprising: a housing comprising an inlet at a first end and an outlet at a second end opposite the first end, the inlet being fluidly connected to the outlet through a fluid pathway ; a valve injected into the fluid pathway dividing the fluid pathway into a first chamber and a second chamber , the valve in operation adjusting fluid flow through the fluid pathway; an actuator operably connected to the valve; a solenoid in variable electrical connection with the actuator; and a rotary spool valve fluidly connected to the first chamber of the fluid pathway, the rotary spool valve operable to rotate to at least one of a normal start position, a full manual override position, and a plurality of partial manual override positions, wherein the solenoid is in variable electrical connection with the actuator through the rotary spool valve, wherein the rotary spool valve is in variable fluid connection with the actuator; the rotary spool valve is fluidly connected to the actuator through the solenoid when the rotary spool valve is in the normal start positon; the rotary spool valve is fluidly connected to the actuator when the rotary spool valve is in the full manual override start position; and the rotary spool valve is fluidly disconnected from the actuator when the rotary spool valve is in each of the plurality of partial manual override start positions, wherein the first chamber is in fluid connection to the second chamber through the rotary spool valve when the rotary spool valve is in each of the plurality of partial manual override start positions; and each of the plurality of partial manual override start positions allows a different amount of fluid through the rotary spool valve. a housing comprising an inlet at a first end and an outlet at a second end opposite the first end, the inlet being fluidly connected to the outlet through a fluid pathway ; a valve injected into the fluid pathway dividing the fluid pathway into a first chamber and a second chamber , the valve in operation adjusting fluid flow through the fluid pathway; an actuator operably connected to the valve; a solenoid in variable electrical connection with the actuator; and a rotary spool valve fluidly connected to the first chamber of the fluid pathway, the rotary spool valve operable to rotate to at least one of a normal start position, a full manual override position, and a plurality of partial manual override positions, wherein the solenoid is in variable electrical connection with the actuator through the rotary spool valve, wherein the rotary spool valve is in variable fluid connection with the actuator; the rotary spool valve is fluidly connected to the actuator through the solenoid when the rotary spool valve is in the normal start positon; the rotary spool valve is fluidly connected to the actuator when the rotary spool valve is in the full manual override start position; and the rotary spool valve is fluidly disconnected from the actuator when the rotary spool valve is in each of the plurality of partial manual override start positions, wherein the first chamber is in fluid connection to the second chamber through the rotary spool valve when the rotary spool valve is in each of the plurality of partial manual override start positions; and each of the plurality of partial manual override start positions allows a different amount of fluid through the rotary spool valve. <EOS>