A bunch of years ago I flew Lufthansa, I called the OU, they told me the Rav of Frankfurt (might be different one then now) hechsher is pure tarfus.
On the plane an ehrliche frum Jew seated near me was eating the meat, I told him what the OU told me, he points to the hechsher, and says "Frankfurter Rav", I told him, "you know the Pnei Yehoshua isn't the Rav in Frankfurt anymore?", the guy just continued on with his meal.