The reason i ask is because this engine that is puported to have come from United Airlines Flight 175 on 9/11/01....
Has a cooling duct assembly that belongs to either a JT9D 7A or a JT9D 7F
or a JT9D -7J
But United Airlines Flight 175 AKA N162UA.....which was a 767-200 had a JT9D - 7R4D engine:
In fact all United Airline 767's were equiped with JT9D 7R4Ds.
Airline: Model Engine
UNITED AIRLINES 767-200 JT9D-7R4D
UNITED AIRLINES 767-200EM JT9D-7R4D
....and a cooling duct assembly on a JT9D-7R4D looks like this:
But is it possible that a JT9D-7R4D could be backward compatible to accomodate a cooling duct assembly from a JT9D- 7A/7F/7J ?