You need to look at L class earning. The following post is over two years old (and doesn't have references for JAL) but may provide a guide:
Originally Posted by
Gardyloo
As requested, below is a table showing "L" class FFP earning rates by airline flown/FFP.
Booking Class L - Redeemable miles/km per mile/km flown
Code:
FFP> AA* AY BA CX EI IB LA QF
*Pts *Pts
FLY
V
AA* 1 1 0.25 1 Y Y 1 0.5
AY** 1 1 0.25 1 Y Y 1 1
BA* 0.25 0.5 0.25 0.5 Y Y 0.25 0.25
CX 0 1 0.25 1 Y N 1 0.5
EI 0 1 0.25 1 Y Y 1 1
IB 0.3 1 0.25 0 Y Y 0.3 1
LA 1 1 0.25 1 Y Y 1 1
QF 0.5 1 0.25 0.5 Y Y 0.7 1
AY Dom 1 0.5 0.25 1 Y Y 1 1
LP I/N 1 1 0.25 0 ? ? 1 1
LP Dom 0 0 0.25 0 ? ? 1 0
* No AA credit on BA US-LON, no BA credit on AA US-LON and v.v.
** Most plans exclude AY "Excursion" (Y-only) flt nos.
*Pts - FFP uses distance-based points; No./pct varies by class/distance
I make no warranties regarding the completeness or accuracy of this. ...