This AD requires replacement of fuel injector servo gasket 365533 with gasket 2577258 in order to prevent a lean running engine. FAA describes the two gaskets as follows:
"Servo plug gaskets, P/N 365533, are identified as being made of either a paper or fibre material, impregnated with synthetic rubber. They are relatively flexible and have a rough surface. Servo plug gaskets, P/N 2577258, are identified as being made of metal with a coating of synthetic rubber. They are relatively rigid and have a smooth surface".
Looks like my Bendix RSA5 fuel servo, converted to experimental and re-data-plated by Airflow Performance, needs to go back to them since the upgrade was done prior to issuance of this AD.
Anybody complied with this AD? Doesn't seem too difficult. Maybe I'll do it myself.