Spooky 2
On a four-engined passenger jet I flew some years ago - fitted with triple INS but no FMCs - our company fuel plans always provided two-engines operating (2EO) data, as well as three-engines operating (3EO) data.
The data provided showed us, if flying on two or three engines, when we would gain (P-IN) or lose (P-NR) a particular airfield, rather than showing an ETP, but an ETP could easily be calculated.
I'm not sure how legible these scans will be, but here is some of the data from a LHR-YYZ flight in late 2003.
This chart shows 3EO data flags above the (random) track and 2EO data flags below the track
This is the same data in numerical form
This data gives the 3EO and 2EO fuel required from various waypoints on track
Best Regards
Bellerophon