The L1428 is an 87% L unknown composite sparky motor from Contrail.
| Average Thrust: | 1,542.2800 N | 
| Certified By: | Tripoli Rocketry Association | 
| Class: | 87% L | 
| Delays: | 1000 seconds | 
| Diameter: | 75.0000 mm | 
| Length: | 1492.2500 mm | 
| Letter: | L | 
| Manufacturer: | Contrail | 
| Name: | L1428 | 
| Peak Thrust: | 2,751.9400 N | 
| Propellant: | APCP | 
| Status: | In-Production | 
| Thrust Duration: | 3.1000 s | 
| Total Impulse: | 4781.0500 Ns | 
| Total Weight: | 5738.0000 g | 
| Type: | Unknown | 
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