MSB93-12

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Continental Aerospace Technologies

Issued 1993-05-12

Manufacturer's own classification: “Mandatory Service Bulletin”. The manufacturer's classification is not an FAA requirement.

NOT AN FAA REQUIREMENT — This is a manufacturer document. It is not an FAA Airworthiness Directive and compliance is not required by 14 CFR 39 unless an AD cites it.

VALVE RETAINER KEY INSTALLATION INSPECTION

Source: Continental Aerospace Technologies, retrieved 2026-09-01

View on Continental Aerospace Technologies' site

Applies to 6 models in our index

Continental IO-360 Continental Aerospace Technologies · engine
Continental IO-520 Continental Aerospace Technologies · engine
Continental IO-550 Continental Aerospace Technologies · engine
Continental O-200 Continental Aerospace Technologies · engine
Continental O-300 Continental Aerospace Technologies · engine
Continental O-470 Continental Aerospace Technologies · engine