The same report said that Iraq's fleet of "more than 10" smaller Boeing Insitu drones had flown just two sorties in total since March 2019 due to a lapse in contractor maintenance support and unexplained signals interference issues.
Iraqi Security Forces (ISF) have "struggled with the availability" of the aerial intelligence, surveillance, and reconnaissance (ISR) assets, in general, according to the report. "Shortfalls have resulted in a 50 percent decrease in Iraq’s fixed-wing ISR sorties compared to the same period last year."
It is unclear how many CH-4Bs Iraq has in total or how many of them might be at least partially mission capable.
As with the Scan Eagles, the Lead Inspector General report only says the country has "more than 10" of these Chinese drones.