"Maintaining Safe Operations with Radar Altimeter Interference from 5G" issued by IFALPA (based on ALPA-International).
Indexed as 22SAB01 superseding and updating prior bulletin on same topic (21SAB16)
Link (from IFALPA website):
22sab01-maintaining-safe-operations-with-radar-altimeter-interference-from-5g.pdf (ifalpa.org)