Bristow Group signed a 10-year agreement with GE Aviation for an hourly cost maintenance program covering Bristow’s GE CT7-8A turboshaft engines powering its fleet of more than 50 Sikorsky S-92s. The agreement, signed yesterday at Heli-Expo 2015, continues a longstanding relationship between the two companies by combining several short-term hourly cost maintenance programs into a single, long-term agreement that will provide Bristow with predictable engine maintenance costs. In October, Bristow Norway became the first helicopter operator using the GE CT7-8A engine to surpass 15,000 flight hours without a shop visit.