If you’ve ever hit the TO/GA button inadvertently during an approach and wondered how to recover the answer is you cannot if you are in IMC. Unlike other Gulfstreams, TO/GA in the GVII not only sequences the FMS into the missed approach, but it also gets rid of the approach navigation aids and pushes everything in the FMS into the go around mode. Unless you are in VMC or have a long way to go, if one of the pilots hits TO/GA, you are going around.
Everything here is from the references shown below, with a few comments in an alternate color.
DO NOT ATTEMPT A GO-AROUND WITH LESS THAN 650 LBS OF FUEL INDICATED IN EITHER FUEL TANK.
This should be automatic, just verify that it happens.
[Ground and Flight Operations, pp. 249-250]
If the MISSED APP icon is selected from the TSC tray, the flight guidance system will initiate the published missed approach at the missed approach point. If the TO/GA button is depressed, then go-around will initiate immediately. If Auto-Throttles are engaged, power will advance to go-around power and the flight director will command a climb.
Gulfstream GVII-G500 Airplane Flight Manual, Revision 4, August 29, 2019
Gulfstream GVII-G500 Ground and Flight Operations, released as part of the GVII-G500 AOM, §02-01-10
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