Sagittarius is the rising ascendent and the ascendent lord Jupiter is placed in watery sign cancer. Cancer happens to be Jupiter's exaltation sign but being in last degrees of the sign places it in the Ashlesh-Magh Rasi gandanta. In Nadi Jyotish, exaltations of planet is not considered good for the mool-trikona of that Rasi. Here Jupiter is exalted so its mool trikona Sagittarius which is the Lagna, the whole existence of the event, is bound to suffer !
Next parameter is the Hora Lord which is Sun here. Its Sunday so Sun gains additional power because apart from being Hora lord, it is also Day-lord (Vara-Lord). However, It is Sukla Saptami tithi i.e 7th lunar day of bright half. Sun happens to be 9th lord in Lagna which is absolutely good. So how could it justify this mishap ! The reason is in the Grah Janm Dosha. Planets too have birth dates like other living, non-living things around. Sun was born on Saptami tithi (ruled by Saturn). This creates dosh because whenever Sunday falls on Saptami tithi and Rahu becomes especially the trouble maker. Here in this chart, Rahu is placed in 8th from Chandra Lagna. From Jupiter also, Rahu is 8th lord. Rahu is the prime trouble maker here which indicates terrorist link or foreign planning in the event.
In Navamsa chart, Leo is the rising ascendent and Sun is placed in 12th house in Maran Karak sthan and eclipsed by Rahu. Jupiter, the Lagna lord (D1) is placed in 8th house and aspected by Rahu, Saturn and Mars. Jupiter is placed in 8th house in Rasi as well as Navamsa and both are in watery signs indicates flight would have been shot dead in the sea. Rahu being prominent malfactor indicates role of terrrorist organizations hand behind it.