serial number look up

I'm looking for the manufacturing dates for these two serial numbers:

9563719

9651677 (engine configuration search gave no result for this one)

S/N 9563719

Engine Type: 912 S3-01

Manufacturing Date: 02.12.2015

TBO: 2000HR

Configuration

• S3 I=2,43 without a governor, with cover
• with mech. tachometer pick up
• without external generator
• with air guide baffle
• with std. temperature sensors
• with screw connection metrical
• with expansion tank
• without engine truss
• without air box
• starter large

S/N 9651677 - No results...Incorrect S/N

Here is the correct S/N for the second one: 5651677

S/N 5651677

Engine Model: ROTAX 912 ULS

Manufacturing Date: 01.07.2008

TBO: 1500HR

Configuration:

• without fuel lines
• UL2 I=2,43 with clutch
• without vacuum pump
• with green valve covers
• without mech. tachom. pick up
• without external generator
• without air guide baffle
• with std. temperature sensors
• with nipple conn. for oil pump
• with expansion tank
• without air box
• bent sockets for engine truss
• starter large

Can I get manufacturing date info on 912ULS sn: 6783103? 

Thanks,

Jay