If FSX crashes when trying to change Time and Season... or Got Airport... then check the Windows Event Viewer for the following:
Faulting application name: fsx.exe, version: 10.0.61355.0, time stamp: 0x4643ee0a
Faulting module name: uiautomationcore.dll, version: 7.2.14393.479, time stamp: 0x5825700e
Exception code: 0xc0000005
Fault offset: 0x00056ca9
Faulting process ID: 0xb30
Faulting application start time: 0x01d2a64c4e6626a4
Faulting application path: C:\Program Files (x86)\Microsoft Games\Microsoft Flight Simulator X\fsx.exe
Faulting module path: C:\WINDOWS\SYSTEM32\uiautomationcore.dll
Report ID: 93c8a982-3cd4-4673-b964-e5b48442f264
Faulting package full name:
Faulting package-relative application ID:
If you are getting UIAutomationcore.dll as the faulting module, put the UIAutomationCore.dll version 6.0.5840.16386 in your main FSX folder.
You will need to search for this dll file on the internet.