(2022) Service Bulletin 22031 Rev A: Initial Issuance of STC for Installation of the GI 275 Multi-function Instrument in an Approved Model List of Part 27 Rotorcraft

PRODUCTS AFFECTED:

GI 275 Multi-function Instrument installed under the GI 275 Part 27 AML STC SR01980WI are affected.

COMPLIANCE:

Optional. This service bulletin is optional and may be incorporated at the owner’s discretion.

PURPOSE:

This STC Service Bulletin provides notification of the initial issuance of STC SR01980WI Master Drawing List revision 1. This STC approves the installation of the GI 275 Multi-function Instrument into an Approved Model List (AML) of Part 27 rotorcraft.

The GI 275 Multi-function Instrument provides many installation options (PFD, MFD, HSI, or Standby ADI) in an Approved Model List of Part 27 rotorcraft.

Note the following software requirements:

• GI 275 connection and compatibility with TXi requires TXi software version 3.12 or later
  
• GI 275 compatibility with GTN™ as a display for HTAWS alerts requires:
  
  • GTN 6XX/7XX software version 6.71 or later
    
  • GTN Xi Series software version 20.11 or later