Franklin, Andrews, Kramer & Edelstein

[janice shell]

They were both Pratt & Whitney engines, too:

According to Cirium fleets data it is fitted with Pratt & Whitney PW4056 engines, from the same powerplant range – although a different model – as the PW4077 engine involved in the United Airlines Boeing 777 uncontained failure event over Denver on the same day.

https://www.flightglobal.com/safety/dutch-probe-shedding-of-747-freighter-engine-parts-over-maastricht/142521.article

Here's an interesting article:

Why Do Boeing 777 Engines Keep Exploding?

https://nymag.com/intelligencer/2021/02/why-do-boeing-777-engines-keep-exploding.html