Does deploying the parachute in mid-air automatically shutdown the engine in small aircraft such as Cirrus?

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Answer by Thomas Zerbarini:

Not typically. The Ballistic Recovery System (BRS) has a specific pilot procedure for the safe operation and deployment of the BRS.

Q.  How is the system activated?

A.  Simple: Pull the handle strongly and slowly! The Aircraft Flight Manual Supplement provided will give specifics for the plane but in general:

1. Fuel Mixture Control: idle cut
2. Activation Handle Cover (covering the pull handle): remove
3. Activation Handle: pull down with both hands
4. Fuel Selector Switch: off
5. Master Switch: off
6. Restraint System: secure
7. Assume Emergency Landing Body Position

When pulling with both hands, make a motion like performing a pull up. While only a small motion is required to arm and fire the rocket (in one action), you should still pull as hard and as far as physically possible. It only takes 35-40 pounds of pull on the handle to fire the rocket. BRS has proven that a wide range of occupants can activate the rocket; however, very small children will not be able to accomplish the pull.

From: BRS Parachutes | FAQ

As you can see, the pilot has specific procedures to accomplish to shut the engine down and prepare the aircraft for an emergency landing.

Thomas Zerbarini

Does deploying the parachute in mid-air automatically shutdown the engine in small aircraft such as Cirrus?

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