Welcome to Diving Area, the second level of the Offshore And Sunken Ship section from Tomb Raider 2.
When you complete this level normally, you would have to go to an area containing a helipad and helicopter. The helicopter flies upwards and is never to be seen again. Upon making further progress you are able to cause the helipad to raise, enabling you to proceed even further with the level.
However, by using the underwater flare wall glitch I was able to raise the helipad while the helicopter was still there. This resulted in the helicopter getting stuck in a pillar from the helipad. I then headed to the helicopter and it still flew off like normal, regardless of it being stuck in a pillar.
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