I think you are conflating two separate events. Iran shot volleys of missiles at two different bases in Iraq. Separately, but on the same day, aUkraine-bound Boeing 737 800 crashed hear Tehran[1]. Some articles are reporting that it had technical problems. But it may take a while to verify because Iran is withholding the black box from Boeing.

[1] https://www.nytimes.com/2020/01/07/world/middleeast/iran-pla...