My flights have been crashing randomly regardless of what airport or aircraft I'm using.  There doesn't seem to be a pattern.  Here is the log from event viewer: 

Log Name:      Application
Source:        Application Error
Date:          10/4/2018 9:43:00 AM
Event ID:      1000
Task Category: (100)
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      KevinWin10
Description:
Faulting application name: fsx.exe, version: 10.0.62615.0, time stamp: 0x559f9a9a
Faulting module name: MSVCR80.dll, version: 8.0.50727.9445, time stamp: 0x5a7bc74c
Exception code: 0xc000000d
Fault offset: 0x00008aa0
Faulting process id: 0x2500
Faulting application start time: 0x01d45befe604e5fa
Faulting application path: C:\Program Files (x86)\Steam\steamapps\common\FSX\fsx.exe
Faulting module path: C:\WINDOWS\WinSxS\x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.9445_none_d08c58b4442ba54f\MSVCR80.dll
Report Id: 30bbe7ee-3877-45d7-a0ba-76189d9203bc
Faulting package full name: 
Faulting package-relative application ID: 
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Application Error" />
    <EventID Qualifiers="0">1000</EventID>
    <Level>2</Level>
    <Task>100</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2018-10-04T14:43:00.396701000Z" />
    <EventRecordID>19082</EventRecordID>
    <Channel>Application</Channel>
    <Computer>KevinWin10</Computer>
    <Security />
  </System>
  <EventData>
    <Data>fsx.exe</Data>
    <Data>10.0.62615.0</Data>
    <Data>559f9a9a</Data>
    <Data>MSVCR80.dll</Data>
    <Data>8.0.50727.9445</Data>
    <Data>5a7bc74c</Data>
    <Data>c000000d</Data>
    <Data>00008aa0</Data>
    <Data>2500</Data>
    <Data>01d45befe604e5fa</Data>
    <Data>C:\Program Files (x86)\Steam\steamapps\common\FSX\fsx.exe</Data>
    <Data>C:\WINDOWS\WinSxS\x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.9445_none_d08c58b4442ba54f\MSVCR80.dll</Data>
    <Data>30bbe7ee-3877-45d7-a0ba-76189d9203bc</Data>
    <Data>
    </Data>
    <Data>
    </Data>
  </EventData>
</Event>

Please advise, 

Kevin Davis 

1 hour ago, kevinmdavis2010 said:

My flights have been crashing randomly regardless of what airport or aircraft I'm using.  There doesn't seem to be a pattern. 

The msvcr80.dll belongs to Microsoft Visual C++ 2005 which is required for FSX to run.  Many add-ons also use this module so suspect an add-on you installed before the crashes started is causing the error as it was not installed properly or is not compatible with FSX. 

Are you only using the default installation?  No add-ons?

Do you have any tweaks added to the fsx.cfg?

See page 10, AVSIM CTD Guide on procedures to take to fix almost any fsx-se crash.