S10 EASA AD Coolant Replacement
October 11, 2006 | 2006-0311-E
During certification works it was found that the cooling liquid EVANS NPG+ is flammable. The liquid cooling circuit of the Stemme S10-VT is not designed to be filled with a flammable liquid without prior modifications. For that reason, this Emergency AD requires the replacement of the EVANS NPG+ cooling liquid. In addition, the operation limit of the cylinder head temperature must be temporary changed to 120°C / 248°F.