What makes you think there isn’t a review process?
There is a process for “special certification review”, some of those end with changes (typically airworthiness directives); others validate the airplane as meeting certification and safe.
Lear 60, MU-2, DC-10, MD-11, ATR-72, R22/R44 helicopters, Piper Malibu, CE-441, and Bonanza have all undergone the SCR process and continue to fly having been validated as safe/conforming (some with changes to airframe or procedures)
To my knowledge, only the DC-6 and Constellation had their type certification revoked after in-service accidents.
There is a process for “special certification review”, some of those end with changes (typically airworthiness directives); others validate the airplane as meeting certification and safe.
Lear 60, MU-2, DC-10, MD-11, ATR-72, R22/R44 helicopters, Piper Malibu, CE-441, and Bonanza have all undergone the SCR process and continue to fly having been validated as safe/conforming (some with changes to airframe or procedures)
To my knowledge, only the DC-6 and Constellation had their type certification revoked after in-service accidents.