Quite flummoxed by the runway excursion of #JetAirways Boeing 737-800, VT-JBG at GOI.
A few points:
1. Post accident pictures show the starboard thrust reverser deployed and the port reverser stowed. Is this due to the engine cowlings scraping on the ground or did actual deployment take place? Wonder what the actual position of the TR lever was?
2. Was there an uncommanded deployment of starboard reverser just as take-off power was set? Unlikely in a modern aircraft, but chances are there since aircraft was on ground with weight on wheels. But to my mind, in such a failure case the FADEC should have commanded idle power with a lot of warning bells and whistles going off...
3. Did the pilots spool up the outboard engine to assist the turn, close the levers as they line up and then stand them up to 45-50% when cleared for T/O, however the spooling down engine hasn't fully idled and so it spooled up faster than the other, resulting in a big yaw? Or did they use the TOGA button too early before lining up fully? Or was there an overspeed governor failure where the engine runs away before FADEC shuts it down?
4. Did they use reverse on the inboard engine (in this case – starboard) to assist the turn after a rather fast taxi? For this both power levers would have to be first brought to idle to escape the interlocks. But the aircraft did move forward, therefore forward thrust was available - so this scenario too is unlikely..
5. A low speed asymmetric power event is a difficult thing to handle in the night, without many visual references and no rudder control (below VMCG) being at too low a speed for rudder authority.
Waiting eagerly for proper findings on the DGCA enquiry..