Service bulletins relating to the Boeing 737 Stabilizer Ballscrew Assembly – P/N 07322P000-01, -02, -03 have now been released.

These parts are installed on more then 1,700 airplanes worldwide and, as prescribed by the service bulletins, they should be modified on occasion of the next shop visit. As Umbra Cuscinetti is the manufacturer of these ballscrew assemblies, we can also provide relevant repair and overhaul services.
Umbra Cuscinetti will be pleased to supply the modification kit P/N 07322P250-01 or to carry out the work required in accordance with SB 07322-27-01 at our repair stations (approved by EASA, FAA, CAAC and TCCA).
To help us organize the best possible support, we would ask you to let us have your plans in terms of:
a) quantity and time schedule as regards your modification kit requirements
and/or
b) quantity and time schedule as regards performing the relevant service bulletin work at our repair stations.