Taik.
The -250 has an MTOW of 512K.
Also there are two L1011-F in BKK.
One as you say is the -1 the other is a -200.
The -1 was the only one converted with a "private " STC.
The other 10 were done by Marshalls and all ended up as -200 with 474K mtow. 6 ex BA, 3 ex GF, and 1 ex LTU
