Hi everybody, through FMS i was trying to set a realistic setting for failures........unfortunately i can't understand PMDG logic behind this function, may someone explain me how to set properly service based failures, random fail all systems ecc...

 

thanks

Taken from introduction manual page 97

Quote

1. RANDOM: When you activate random failures, you will have the opportunity to set the rate of random failures while also setting limits on the total number of events that may be triggered. This method will allow you to challenge yourself and your airplane knowledge while also setting limits on the number of times that a failure will be triggered during the scope period.

2. SERVICE BASED FAILURES: When you activate service based failures, you will experience mechanical reliability that closely approximates the mechanical reliability of the airplane in normal service operation. Each mechanical system aboard the airplane has been programmed to operate using a “Mean Time Before Failure” (MTBF) model to determine if/when a component may fail. The MTBF data is compiled from industry experience with the 737 airplane type, and augmented to make the data compliant with the expected utilization rate of this simulation product.

So with service based failures, you just set it to on and then disregard service intervals if you want. 777 and 747 feature accelerated interval option, but if I remember correctly, 737 does not. Might be wrong on this last one.

Random failures are exactly what they are named - random. Enable them, set desired criterias and anything can go. When it comes to having those random failures pop up, well, that's a bit more of a gray area. You can set the limit of failures per 10 hours and event limit. I have mine set to one event per 10 hours and no event limit, but have yet to come across any in my approximately 35 hours of flying this bird. In 747, I have noted that for a random failure pop up in a set time frame, you need to fly 10 hours or so in a one go, not accumulative 10 hours throughout multiple trips. Also, random failures will clear next time you load your default panel state and will only retain if you save the panel state that you have them with. 

Is this random failure behavior normal or am I doing something wrong?

Edited March 5, 20206 yr by Evros