This modification was developed for Beech Aircraft type certificate number 3A16 (Models 95-55,95-A55, 95-B55A, 95-B55B, 95-C55, D55, 95-C55A, D55A, E55, E55A, 58, 58A) that have electricly operated cowl flap doors.

This manual cowl flap system is similar to the type of system used on later model Barons. Two push-pull cables (attached to an idler arm, connect to a rod which actuates the door) replace the electric motor. The door can be locked in any position between fully open and completely closed. A Tee Handle control located in the lower center console operates the control cable. For the convenience of entry and exit of the cockpit, the handles are pushed in to open. There is a separate control handle for each engine cowl flap door. This simple system is more reliable and requires less maintenance. The approximate installation time is 8-10 hours. This time may be reduced if installed in conjunction with an annual inspection or other maintenance.

The existing system has one cowl flap door installed on the bottom side of each engine cowling. The cowl flap door is operated by an electric motor with an actuating shaft that opens and closes the cowl flap door. Depending on the model, many of the airplanes equipped with the electric cowl flaps only have two positions, opened all the way or closed. The motor is attached from the engine mount, with the actuating shaft bolted to the cowl flap door itself. This puts the motor very close to the exhaust system. The high temperatures in this area can reduce the operating life of the electric motor and lead to costly repairs. When the motor fails, people adjust the cowl flap door to a fixed position, thus reducing speed. Sometimes higher fuel consumption is required to keep the engine within the normal operating temperature.

The kit cost of $1095 includes everything needed to replace the electric operated cowl flap system, flight manual supplement, STC, installation instructions and continued airworthiness instructions.