Equipment Model	Engine Serial Number	Arrangement Number
247		144-6194, 147-1232, 147-1233
257		144-6194, 147-1232, 147-1233
257B3	CYM1-UP
267		144-6194, 147-1232, 147-1233
267		147-1234, 159-9214
277		144-6194, 147-1232, 147-1233
277		147-1234, 159-9214
277C2	CYM1-UP
277C2	CYM1-UP
287		147-1234, 159-9214
287C2	CYM1-UP
287C2	CYM1-UP