Kontrollproblemer - Alvorlig luftfartshendelse med en ERJ-190-100LR - ASN

Date:	11-NOV-2018
Time:	ca 13:35 UTC
Type:	Embraer ERJ-190LR (ERJ-190-100 LR)
Owner/operator:	Air Astana
Registration:	P4-KCJ
C/n / msn:	19000653
Fatalities:	Fatalities: 0 / Occupants: 6
Other fatalities:	0
Aircraft damage:	Unknown
Category:	Serious incident
Location:	NE of Lisbon -    Portugal
Phase:	En route
Nature:	Ferry/positioning
Departure airport:	Alverca Air Base (LPAR)
Destination airport:	Minsk

Narrative:
Air Astana flight KC1388 diverted to Beja Airport, Portugal after suffering control issues after departure from Alverca Air Base, Portugal. 
The aircraft had arrived at Lisbon on October 2 and underwent maintenance at the OGMA facilities, located at the Alverca Air Base. KC1388 was the first post-maintenance flight. The aircraft took off at 13:31 hours UTC. 
Shortly after departure, about 13:34 UTC, the flight issued a Mayday to the Lisbon Approach controller, stating they had control problems. The flight requested to return to Alverca. About 13:37 UTC the flight requested to climb to FL100, again stating they had "flight control problems". At 13:45 the flight requested vectors towards the sea for a ditching. 
The aircraft continued to circle to the northeast of Lisbon while requesting vectors from Lisbon Approach towards the sea. 
As the aircraft continued circling in the area, two F-16 Fighting Falcon jets of the Portuguese Air Force were scrambled from the Monte Real Air Base. KC1388 was intercepted at 14:48 with an F-16 on the left-hand wing. The F-16 accompanied and guided the flight to Beja Airport (LPBJ) were a landing was carried out about 15:10 UTC.