190-01639-00 GSU 75 ADAHRS Installation Manual
Rev. 6 Page 2-1
2 INSTALLATION OVERVIEW
2.1 Introduction
This section provides hardware equipment information for installing the GSU 75 ADAHRS and GMU 44.
Installation of the GSU 75/GMU 44 must follow the aircraft TC or STC requirements. Cabling is
fabricated by the installing agency to fit each particular aircraft. The guidance of FAA advisory circulars
AC 43.13-1B and AC 43.13-2B, where applicable, may be found useful for making retro-fit installations
that comply with FAA regulations.
2.2 Installation Materials
The GSU 75 is available as a single unit under the part numbers listed in Table 2-1.
Table 2-1 GSU 75 Part Numbers
Item Garmin Catalog Part Number
GSU 75 Unit (011-03094-00) 010-01127-00
GSU 75H Unit (011-03094-20) 010-01127-20
GSU 75B Unit (011-03094-40) 010-01127-40
Table 2-2 GMU 44 Part Numbers
Item Garmin Catalog Part Number
GMU 44 Unit (011-00870-00) 010-00296-00
GMU 44 Unit (011-00870-10)* 010-00296-10
GMU 44 Unit (011-00870-20)* 010-00296-20
*Garmin recommends the GMU 44 (011-00870-10 & 011-00870-20) with Installation Rack (115-00481-10) for
new TC/STC approvals. Garmin does not recommend the GMU 44 (011-00870-00) for new TC/STC approvals.
The GMU 44 (011-00870-10) maintains the same form, fit, and function as the original GMU 44 (011-00870-00),
the GMU 44 (011-00870-20) unit has smaller vertical clearance requirements than the GMU 44 (011-00870-00
and 011-00870-10) units.
Table 2-3 GTP 59 Part Numbers
Item Garmin Catalog Part Number
GTP 59 Probe (011-00978-00), see Table 2-7 011-00978-00
The document reference is online, please check the correspondence between the online documentation and the printed version.
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