Hi
I wonder if somebody out there can expalin the difference between these two. When, to whom and how are these applied?

I know we have some DMIRs and/or ODARs here. Can you help?

My guess is that a “technical notice” is the same as a “technical directive”. It’s a method for notifying the field of potential problems or pending modifications. In our system, we have different types of technical directives based on the level of severity. We refer to such technical directives as service letters, service bulletins, alert service bulletins, and airworthiness directives.

I am guessing that a service bulletin is a form of technical notice.

The service bulletin is typicaly a recomendation made by the design holder to those working on the parts under part 43. I do not belive that the FAA sees these as mandatory- as they do the CMM or AD's.
The Technical Notice term does not exist as a true FAA term so this might or might not be a variation of the same as above or be something else. A technical directive more correctly called an AD by the FAA requires mandatory action.
:2cents:

The service bulletin is typicaly a recomendation made by the design holder to those working on the parts under part 43. I do not belive that the FAA sees these as mandatory- as they do the CMM or AD's.
The Technical Notice term does not exist as a true FAA term so this might or might not be a variation of the same as above or be something else. A technical directive more correctly called an AD by the FAA requires mandatory action.
:2cents:AD = Airworthiness Directive,
CMM = ???

AD = Airworthiness Directive,
CMM = ???

Component Maintenence Manual.....?

BadgerMan
You are correct. Have to remember to not use the acronymns or at least add them for those that are in differnent industries.:bonk: