Interface to analog navigation receivers not listed in Table C-7 can still be approved under the GI 275 if all of the following conditions are met:
•
The navigation receiver is approved to TSO C36( ) (Localizer), TSO C40( ) (VOR), and optionally TSO C34( ) (Glideslope) if the glideslope is used
•
If the glideslope is being used, the navigation receiver has a glideslope low-level flag output
•
The installation of the navigation receiver was previously FAA-approved
•
The calibration procedure for the analog navigation receiver described in Section 5.7.3 and the ground check in Section 6.3.2.2 have successfully completed