Platinum Jet Management last month was slapped with a cease-and-desist order for the second time since the Challenger overrun accident at Teterboro Airport on February 2 last year. The DOT order claims Platinum Jet operated the Challenger and other charter flights without economic or regulatory authority and violated U.S. cabotage rules. Platinum Jet and its three owners were penalized $175,000. One month after the Challenger accident, the FAA issued a cease-and-desist order against Platinum Jet and proposed civil penalties totaling more than $1.86 million for alleged FAR violations involving 49 for-hire, passenger-carrying flights.