AA Codeshares on JL?
 

I'm looking for AA codeshare flights operated by JL in Asia (as Asia is defined in OWE rules) which are 3,000 miles or more. How can I go about finding them? Note, there is no CGK-NRT availability in D or A on any of the days that could work for me.

NRT-KUL AA8415
NRT-SIN AA8482

I used airline route mapper to find the longer JL flights
Then used ExpertFlyer to check if AA has codeshares on them
(it does not have a codeshare on JL's NRT-DEL flight)

Note that airline route mapper is well out of date and therefore I might have missed newer JL flights

Also HND-SIN (AA8438).

For convenience, I tend to use the mileage monkey even though it is not technically as definitive (airline route map and expert flyer or ITA with aa+ in the advanced routing will do that). This shows 5 flights:

NRT-SIN/KUL/DEL (+CGK)
HND-SIN

I would guess they all have codeshare options (for connections to or from the US)

Great, friends, thank you. Now I have to figure out how I want to build one of them into my itinerary.

There's BKK-NRT/NRT-BKK as AA8412/AA8411.

Funnily there is HND-BKK as AA8477 but no BKK-HND !

I'm doing BKK-NRT next month and then connecting onwards. Note that you can only book these inter-asian flights as part of an intercontinental flight across the Pacific. AA codeshares onwards do count too.

BKK is not quite 3,000 miles though. Womp womp.