Actual report: https://aviation-safety.net/wikibase/487013
Material was CF-ABS
>> Material was CF-ABS
With a glass transition temp of 105C.
And yet "Two samples from the air induction elbow were subjected to testing, using a heat-flux differential scanning calorimeter, to determine their glass transition temperature. The measured glass transition temperature for the first sample was 52.8°C, and 54.0°C for the second sample."
Except that it wasn't, it's just what "the owner understood from the vendor". But the AAIB measured the Tg of material samples to be about 53 °C, which is very low and strongly suggests it being PLA or PLA-CF.
I wonder if he was erroneously sold a demonstrator part?