747 diverts with nav failure
A London-Beijing BA 747-400 diverted to Irkutsk, Eastern Siberia, on 28 August due to 'failure of navigation equipment'.
Flight BA 039 - with 270 passengers and 16 crew - landed in Irkutsk at 1041 local time, 40 minutes after the initial request to divert.
An airport spokeswoman explained 'The plane made an emergency landing in Irkutsk because of the failure of navigation equipment'. Passengers were told that there was a malfunction of the flight software on board.
The 1996-registered aircraft is reported to have 2 GPS, 3 IRS, VOR, DME, ADF and FMC; a report suggests that display overheating may have been the cause.
BA technicians were expected to fly to Irkutsk to assess the damage. Meanwhile, those on board were reported to have been quarantined in two nearby hotels, with an onward flight promised for early on 29 August.
Details from The Siberian Times below.