San tower supervisor was notified by the center that the clearance issued to a departure via pre dep...

Narrative:

I was called from the TRACON regarding aircraft X. TRACON told me that the aircraft X was on the wrong flight plan and asked what he was issued. I gave the route that was automatically sent via pre departure clearance and was acknowledged. The center called to state they were filing a pilot deviation. As I investigated; there was another flight plan for aircraft X that was not issued or acknowledged. There was not an amendment; just a duplicate flight plan.this has happened numerous times. If an airline files two flight plans; the computer does not always identify that there are two. So when it is looked up; and shown as already issued; the extra flight plan is 'dumped'. There should be some sort of way that it can be caught before the aircraft departs. If it is sent automatically and acknowledged; there is no other way to tell.

Original NASA ASRS Text

Title: SAN Tower Supervisor was notified by the Center that the clearance issued to a departure via PDC was different than the clearance shown by the Center.

Narrative: I was called from the TRACON regarding Aircraft X. TRACON told me that the Aircraft X was on the wrong flight plan and asked what he was issued. I gave the route that was automatically sent via PDC and was acknowledged. The Center called to state they were filing a pilot deviation. As I investigated; there was another flight plan for Aircraft X that was NOT issued or acknowledged. There was not an amendment; just a duplicate flight plan.This has happened numerous times. If an airline files two flight plans; the computer does not always identify that there are two. So when it is looked up; and shown as already issued; the extra flight plan is 'dumped'. There should be some sort of way that it can be caught before the aircraft departs. If it is sent automatically and acknowledged; there is no other way to tell.

Data retrieved from NASA's ASRS site 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.

Attributes
ACN	1404038
Time
Date	201611
Local Time Of Day	0601-1200
Place
Locale Reference	SAN.Tower
State Reference	CA
Environment
Light	Dawn
Aircraft 1
Make Model Name	A321
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Person 1
Function	Supervisor / CIC
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 8
Events
Anomaly	ATC Issue All Types Deviation - Procedural Clearance

San tower supervisor was notified by the center that the clearance issued to a departure via pre departure clearance was different than the clearance shown by the center.