Looks like it was reported so no idea why he got rid of the number. Perhaps someone reported it for him.
NTSB Identification: WPR14CA255
14 CFR Part 91: General Aviation
Accident occurred Thursday, June 19, 2014 in Caldwell, ID
Probable Cause Approval Date: 09/30/2014
Aircraft: COSMOS PHASE II PHASE II 582, registration: N234BS
Injuries: 1 Uninjured.
NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.
The pilot reported that he was flying his weight-shift control trike at low altitude when it struck power lines. Subsequently, the trike descended to the ground, which resulted in substantial damage to the structural tubing. The pilot further stated that his smoke colored visor attached to his helmet prevented him from clearly seeing the power lines. The pilot reported no preimpact mechanical failures or malfunctions with the aircraft that would have precluded normal operation.
The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
The pilot's failure to monitor the environment and to maintain sufficient altitude to clear power lines during low altitude flight.