Robert M. Gary wrote:
Legally, if you disconnect the lines they must be recertified by an
avionics shop. Not even an A&P can disconnect static lines.

Robert,

A) Arguably, anyone can disconnect anything they like on an aircraft.
It's the returning to service part that will require some sort of
official blessing.

B) As I read 91.411(b)(3), any Airframe Mechanic can perform the
required static system tests after opening up the system.

C) Such testing is only required *if* the aircraft is to be operated in
controlled airspace under IFR.

Happy Flying!
Scott Skylane
N92054