The report (in French...) can be found
here.
What we've learned:
- Run-up test was performed at high ENG thrust setting on 4 engines to detect an oil leak (procedural violation)
- No chocks in place (procedural violation)
- Braking system was normally operative giving full efficiency
- 3 technicians in the cockpit, 1 AI tech on the right performing the test, 1 GAMCO tech on the left as a client observer only, 1 AI flight test engineer (A320, ATR42 type rated though), observer as well on a J/S.
- 6 other people, in the cabin.
What happened:
During run-up, A/C started to move due to:
-high vibrations
-decrease of GW due to fuel burn during test (1270 kgs)
-slight brake pressure decrease on one wheel
Gamco technician noticed that first and spoke out.
AI technician focused on an altn braking problem and deactivated the park brake while pressing the pedals (not enough in a first stage...) to recover normal braking.
As the A/C continued moving, AI tech tried to steer the A/C to the right to avoid the wall...doing so, he inhibited braking on central wheels.
A/C accelerated, 4 to 31 kts in 7 sec.
About 2 sec before impact, the engineer on the rear J/S retarted the THR levers to idle.
That's facts.
That was just to give a reply to that racist story we read about this event.
So long'