not sure this reservation has any time in USA. why is he filing formal complaint with DOT
From following the whole trail seems it was JFK-IST-TLV that had IRROPS and stranded his son (and 6 others) in Turkey for almost 72 hours including a shabbos that he was filing about (should be covered departing US)
That specific filing that was tagged "Oh my what did he do here" seemed to be a separate experience that he had that he was using as proof that they dont follow their own contract of carriage
seems the specific issue is they kept lying to him for example he alleges they claim they confirmed a seat that was really only a standby and claiming they never received his receipts etc
End story is he seems to be claiming deceptive marketing not keeping their own contract of carriage and not informing passengers of their rights
later on he added allegations against their counsel etc based on their responses