Central Air Ambulance Rescue Limited (CAARL) and Search and Rescue Services Ltd (SRSL) are registered charitable companies, whose shareholders are the five regional charitable Trusts (the Shareholder Trusts).

Central Air Ambulance Rescue Limited (CAARL) provides Air Ambulance Helicopter Services, under a joint contract to Health New Zealand (Te Whatu Ora) and the Accident Compensation Corporation (ACC). CAARL provides these services through its Air Operator Certificate (AOC) holding entity, Search and Rescue Services Ltd (SRSL).

SRSL provides all the operational services and associated administrative functions for CAARL, this includes operations management, provision of pilots, aviation and medical crew, fleet management, and maintenance management of the fleet.

The Shareholder Trusts support Air Ambulance operations at a local level. Each Shareholder Trust provides a helicopter/s and operational equipment to SRSL, and a base/s for operations to be conducted from.

Eastland Helicopter Rescue Trust (EHRT)

Hawkes Bay Rescue Helicopter Trust (HBRHT)

The Taranaki Rescue Helicopter Trust (TRHT)

The Life Flight Trust (LFT)

Philips Search & Rescue Trust (PSRT)