Air France flight #AF770 to Brazzaville and Kinshasa is declaring an emergency.
The flight #AF770 departed Paris CDG Airport runway 26R one hour late.
Only 15 minutes into the flight, the crew squawked 7700 (general emergency) while heading to South-East.
The flight is operated by a Boeing 777-300ER (reg. F-GSQD) which is 19 years old.
The aircraft stopped the climb at FL200.
UPDATE #1 11:50 CET
The plane is holding 20,000 ft.
UPDATE #2 11:53 CET
We have confirmation the flight is currently returning to Paris CDG.
UPDATE #3 12:25 CET
Flight #AF770 has just landed back one hour after departure on runway 26R at Paris CDG (which is 4200m long) following a technical issue one.
UPDATE #4 13:05 CET
According to our information, flight #AF770 returned to Paris CDG due to a warning light in the cockpit.
