The in-service fleet of Sikorsky S-92 medium-twin helicopters reached 100,000 total flight hours, the company announced last month. The first production S-92 was delivered in late 2004. There are now 67 S-92s in service, 11 of which fly an estimated 130 to 170 hours per month. To date, 13 of the aircraft have logged more than 3,500 flight hours.