An EMB145 FMS dumped the flight plan so the crew reentered the data from the pre departure clearance...

Attributes
ACN	1008168
Time
Date	201205
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	EMB ERJ 145 ER/LR
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	FMS/FMC
Person 1
Function	Pilot Not Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	First Officer Pilot Flying
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Clearance Deviation - Track / Heading All Types

Narrative:

After takeoff the FMS dumped our flight plan for the second time with this aircraft. We reentered the flight plan as per the pre departure clearance. After the first VOR we were suppose to fly to an en route intersection and then the airport arrival. What we didn't realize is that intersection was not in the flight plan. ATC asked to verify our routing; we told them we were direct an intersection on the arrival. We also stated that our flight plan dumped out of the FMS after takeoff and had some issues with it. ATC stated no problem; simply fly to the en route intersection then the arrival. They stated no issues. [This] reiterated the [need] to double check the flight plan more accurately especially after having problems with the FMS.

Original NASA ASRS Text

Title: An EMB145 FMS dumped the flight plan so the crew reentered the data from the PDC but entered an intersection which was not in the flight plan for the destination arrival.

Narrative: After takeoff the FMS dumped our flight plan for the second time with this aircraft. We reentered the flight plan as per the PDC. After the first VOR we were suppose to fly to an en route intersection and then the airport arrival. What we didn't realize is that intersection was not in the flight plan. ATC asked to verify our routing; we told them we were direct an intersection on the arrival. We also stated that our flight plan dumped out of the FMS after takeoff and had some issues with it. ATC stated no problem; simply fly to the en route intersection then the arrival. They stated no issues. [This] reiterated the [need] to double check the flight plan more accurately especially after having problems with the FMS.

Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

An EMB145 FMS dumped the flight plan so the crew reentered the data from the pre departure clearance but entered an intersection which was not in the flight plan for the destination arrival.