The update, per Microsoft:
"
Bug Fixes
Included in this update are also a number of fixes, which you can find below:
CHANGELIST:
Turbine
Resolved issue in N1 values where some settings were set to zero
Fixed issue where fuel flow not saved and set to 0 when started in the air
Agent radar
Resolved in flight issue which resulted in intermittent crashes when using navigation way-points
Conversion
Impression fixes when converting knots to meters per second
Piston
Small fixes to oil pressure table
C172 oil pressure changed to start with a valid value
Live Weather
Reintegrated Live Weather
When a weather station METAR line reading is failing the data will now be extrapolated from the weighted mean of the closest available METAR sources, instead of resetting to default weather
FSX:SE Team
"
(source:
https://store.steampowered.com/news/?appids=314160
)