The C20/28/30 engine FCU will keep squirting more and more fuel into the engine until it arrives at N1 topping. So if you get to a TOT limit before the N1 limit, and keep demanding more power until N1 topping (when you can get no more power), you can seriously toast the engine. I've had a 206B3 at 11 grand ISA+15 but I can't recall which limit you will get to first, but it certainly won't be a torque limit. I always have my eyes shut whenever VFR above about 3 grand because it's not a place I like being. Over-torque a 206 engine and you aren't so much harming the engine, but the powertrain 'ant gonna like it and the AOG inspection might get real expensive to fix. I've got a hunch that cooking an engine without an over-torque might not be as expensive as the damage is confined to the engine hot section. All academic here as the accident aircraft is probably not economic to fix and is destined for the scrap heap, or the miracle room at the FrankenRanger factory.
Last edited by gulliBell; 31st Dec 2021 at 07:56.