Continental IO-520 — Airworthiness Directives & known issues
The Continental IO-520 is installed on 9,792 registered aircraft. These are the Airworthiness Directives that apply to the engine family — whichever airframe it’s bolted to.
Engine ADs for the Continental IO-520
- one-timeAD 2023-05339 — Airworthiness Directives; Continental Aerospace Technologies, Inc., Reciprocating Engines
The FAA is superseding Airworthiness Directive (AD) 2023-04-08 which applied to certain Continental Aerospace Technologies, Inc. (Continental) GTSIO-520-C, -D, -H, -K, -L, -M, -N, and -S; IO-360-A, - AB, -AF, -C, -CB, -D, -DB, -E, -ES, -G, -GB, -H, -HB, -J, -JB, -K, and -KB; IO-4…
- one-timeAD 2023-03796 — Airworthiness Directives; Continental Aerospace Technologies, Inc. Reciprocating Engines
The FAA is adopting a new airworthiness directive (AD) for certain Continental Aerospace Technologies, Inc. (Continental) GTSIO- 520-C, -D, -H, -K, -L, -M, -N, and -S; IO-360-A, -AB, -AF, -C, -CB, -D, -DB, -E, -ES, -G, -GB, -H, -HB, -J, -JB, -K, and -KB; IO-470-D, -E, -G, -H, -J,…
Exact applicability (by engine serial and installed parts) and compliance come from the aircraft’s engine logs.
Tailplate reads a tail number’s logbooks — engine ADs matched to compliance, time since overhaul vs TBO, and the whole records picture.
Look up a tail number →Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination.