It may be followed by a coronal mass ejection. Changes include a large plastic brass deflector mounted toward the rear of the ejection port. On 9 March 1989 a coronal mass ejection occurred. It is used to treat heart failure with reduced ejection fraction. This process is usually associated with a continuous decline in ejection fraction. The decline in ejection fraction appears to be reversible. Powerful flares are often, but not always, accompanied by a coronal mass ejection. Heart failure with preserved ejection fraction (HFpEF). The origin of the term ejection fraction is somewhat obscure. The purpose of an ejection seat is pilot survival. Thiokol pioneered the short-burn rocket motors used in aircraft ejection seats. It features twin extractors on the bolt which makes case ejection very positive. The breech face is deeply recessed in order to aid in extraction and ejection reliability. The pilot sat on a primitive ejection seat. A visor can be deployed in front of the display providing protection during ejection.