Alltrikes

SBs not mandatory, FAA counsel says

The FAA lawyers have spoken: Service bulletins (SBs) are not - repeat not - mandatory for most Part 91 aircraft operators. That's exactly the decision AOPA had encouraged and expected.

That had been everyone's understanding of the regulations until two months ago, when an NTSB administrative law judge issued a ruling that clouded the issue.

Remainder article HERE

Note this ONLY appears to apply to Part 91 (recreational) aircraft, not commercial, not SLSA, not instructional aircraft, not part 23, etc.

It also states Airworthiness Directives (ADs) ARE mandatory.  SBs may not be depending on your situation.