What is the fine-grained topic of the following text: Primarily in use servicing the offshore oil and gas sector, the medium-heavy twin turboshaft helicopter is supported by H&G as a result of a spares package acquisition and commonality between the Super Puma and Puma platform. Only return the topic.
H&G's support for medium-heavy twin turboshaft helicopter in offshore oil and gas sector due to spares package acquisition and platform commonality.