Unusual Avenger ...

[Mark Allen M]

This one is not making sense. Things are missing, things are added.

[quemerford]

Early COD Fleet Test/Flight Test?

[raconnel]

Jet engine in the belly?

[mike furline]

The FT on the engine cowl is for Flight Test and is typical on aircraft assigned to Pax River during WWII.

https://www.aircraftinformation.info/JB ... ries3.html
24141 Grumman XTBF-3 Avenger MSN 5024. Trial installation of Wright R-2600-20 engine. Also became flying test bed for Halford H-1B turbojet. First flight Dec 1944, nick-named "Fertile Myrtle"