to Jail . . .SANTA MONICA, Calif.; A pilot who buzzed the Santa Monica Pier in amilitary jet has been ordered to jail.David G. Riggssurrendered to authorities Wednesday to begin serving a 60-day sentence.The 48-year old was convicted of violating a rarely usedprovision of the California Public Utilities Code that is designed to protectthe public from careless and reckless pilots.