Installation of EMS Equipment P/N 429020-501 & 429020-502 must be in accordance with Aerolite Max Bucher GMBH Master Document List MDL-10-006, Rev. B dated April 29, 2011. This modification is required to be maintained in accordance with Aerolite Operations Manuals OPM-429020-501, Rev. A, dated March 1, 2011 & OPM-429020-502, dated January 19, 2011, respectively. EASA approved Rotorcraft Flight Manual Supplement FMS-429020-501, Rev. A & FMS429020-502, Rev. 0, respectively, are required with these installation. View PDF on drs.faa.gov ↗

The STC PDF is authoritative: installation instructions, ICA requirements and limitations.