I had meal from Amsterdam with BADATZ of Amsterdam a few weeks ago ex-KBP and ex-FRA
Sounds like the Stogel meals they bring when they run out of Sohar's but Sohar's kashrus is good.
Source for Sohar's Kashrus being good at this point?
My father knows the Rav Hamachshir personally and says he is very reliable.
Badatz Amsterdam is Rabbi Wolf. He is a huge Talmid Chacham and Yerei Shamayim very known in the Rabbinate World and in the yeshiva world. Totally reliable.
What is the hechsher in Economy Lufthansa Munich-JFK?
LH is still a mixed bagIt may be stogels (2 weeks ago it was that in Premium and regular economy) but you may get lucky and have https://kragtwijk.nl/en/kosher-meals/IE, bring your own food
What about singapore from FRA?
Used to be Hermolis.
Used to be?