Covering form of preliminary or final report
| Date of event : | 2012-10-31 |
| Incident number : | |
| Report : | Final report |
| Place of event : | FIR Prague |
| Registration mark : | Serious incident |
| Weight category MTOM: : | >5700 kg |
| Type of operation : | Commercial and Air Transport |
| Plane / SFM : | Airplanes |
| Type of plane / SFM : | ATR 42-500 |
| Health effects of event : | Without injury |
| PDF document : | 
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Description:
On October 31, 2012, following maintenance operations, during a non-revenue test and handover flight of ATR 42-500 the functionality of the Stick Shaker/Stick Pusher system was being tested. During the test, the alert of exceeding value of angle of attack was not activated and the Stick Pusher System (Stall Protection System) did not activate. The stall took place with a significant left roll.