non T7 rated:
The pressure cylinders installed that propel the aspirator for the inflatable emergency slide. For a work of fiction, as in the real life those are certified for crash conditions. Whether or not for overheat in a blaze I dare not to speculate.
Alternatively, a tyre burst will kill and even down a plane, that is unfortunately proven. Perhaps a separated MLG wheel lies beneath the torn-off tail? Sounds plausible to me.
https://images.app.goo.gl/y3M6CJRVjyKdqUdW7 Extended gears are engineered to break away in heavy cash they say.