Also known as Rolls-Royce 250-C20R/2, M250-B17F, A250, 250-B17F, Allison Model 250-B17D, Allison Model 250-C30S, Allison Model 250, Allison 250-B17-C
1959 turboshaft engine family by Allison
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).