5.1.1
5.1.2
5.2
5.2.1
Power ............................................................................................................................................5-5
5.2.2
Lighting Bus .................................................................................................................................5-6
5.2.3
Antennas .......................................................................................................................................5-6
5.2.4
Serial Data - RS-232 ....................................................................................................................5-6
5.2.5
COM Discrete Inputs ....................................................................................................................5-9
5.2.6
VOR/ILS Audio ..........................................................................................................................5-10
5.2.7
VOR/ILS Discrete Inputs ...........................................................................................................5-10
5.2.8
VOR/ILS Indicator .....................................................................................................................5-11
5.2.9
RMI/OBI .....................................................................................................................................5-13
5.2.10 DME Tuning ...............................................................................................................................5-14
6
6.1
6.2
6.3
Connector Engagement Check .........................................................................................................6-2
6.4
6.4.1
SYS Configuration .......................................................................................................................6-3
6.4.2
6.4.3
COM Configuration ......................................................................................................................6-9
6.4.4
Audio Configuration ...................................................................................................................6-11
6.4.5
Log Functions .............................................................................................................................6-12
6.5
6.5.1
6.5.2
Flags Check (GNC Only) ...........................................................................................................6-14
6.5.3
6.5.4
6.6
6.6.1
Discrete Input Checkout .............................................................................................................6-16
6.6.2
VHF NAV Checkout ..................................................................................................................6-16
6.6.3
6.6.4
VHF COM ..................................................................................................................................6-17
6.6.5
Interface Checkout ......................................................................................................................6-18
6.7
Flight Checks .................................................................................................................................6-19
6.7.1
COM Flight Check .....................................................................................................................6-19
6.7.2
6.7.3
6.8
Software Loading ...........................................................................................................................6-20
6.8.1
6.8.2
6.8.3
Load Database ............................................................................................................................6-22
6.9
Documentation Checks ..................................................................................................................6-22
6.9.1
7
PERIODIC MAINTENANCE .........................................................................................................7-1
7.1
Equipment Calibration .....................................................................................................................7-1
7.2
VOR Checks ....................................................................................................................................7-1
7.3
Cleaning ...........................................................................................................................................7-1
GTR 225/GNC 255 TSO Installation Manual
Page iv
190-01182-02
Rev. B