Charles Alcock is managing editor of the AIN Media Group, having rejoined the company in 2019. He has been an aviation journalist since 1986, and previously worked for AIN from 1990 to 2017, most recently as editor-in-chief. His main focus is on covering new aviation technology and business models, as well as international news.
Having been raised in the London area, Alcock studied at the University of Manchester in the UK and earned an honors degree in Politics and Modern History. He speaks English and French, and some German.

Managing Editor

Charles Alcock

A 4AIR Rating provides a comprehensive, turnkey solution for any person or company's sustainability goals

George J. Priester Aviation is partnering with sustainability specialists 4Air with the aim of reducing emissions for aircraft operations. The companies announced their alliance on Tuesday at NBAA-BACE 2025, giving Priester’s aircraft management and charter clients the option to pay for carbon offsets and sustainable aviation fuel (SAF).
Priester is rolling out its use of 4Air’s various emissions mitigation measures. The group includes Priester Aviation, Mayo Aviation, Hill Private Aviation, and Omni Private Aviation.
4Air arranges verified carbon offsets in units that correspond to a verified reduction or avoidance of one tonne of carbon dioxide. These support environmental projects that meet strict criteria and standards. The company is also looking to support access to SAF as the fuel becomes more widely available and helps companies with their carbon-reduction-compliance obligations.
According to 4Air, SAF is the most viable near-term solution to reducing emissions from aviation. In its neat form, it reduces the life cycle carbon footprint of aircraft fuel by up to 80% compared with jet-A.
“At George J. Priester, we believe that leadership in aviation means not only providing exceptional service, but also being responsible stewards of our environments,” said Madison Priester, the company’s director of marketing and sustainability.

News about environmental issues relating to aircraft operations, including noise issues, emissisions, and regulations. See Fuel for biofuel.

Priester and 4Air Offers Business Aviation Clients Carbon Offset Measures 

Customers have the option to pay to offset environmental impact of flights

George J Priester’s aircraft management and charter customers can now choose to offset carbon emissions through a partnership with sustainability group 4Air.

Priester and 4Air Offers Clients Carbon Offset Measures 

2024 Corporate Aviation Leadership Summit

Kerry Lynch

News and issues relating to business, corporate and private aviation, primarily regarding turbine-engine-powered airplanes and helicopters. Subjects include aircraft, engines, maintenance, operations, personnel, acquisitions, accidents, safety, security, and training.

Advocates encouraged by focus on innovation

Washington Brings Mixed Bag on Sustainability

Curt Epstein

News and developments about aviation fuel, including jet fuel, aviation gasoline, and biofuel.

News and issues relating to the aerospace industry that are related to the science, engineering and business of flight in space involving civil, industrial and military applications, and similar topics related to flight in the atmosphere of the Earth that are not covered more directly by other AINonline subject channels. In other words, both astronautical and aeronautical subjects, except for those aeronautical topics that are specifically covered elsewhere on this website.

Production of SAF is growing, but still has a long journey ahead

SAF: Fourth Leg of the Stool Slowly Progressing

Charlotte Bailey

News and issues relating to international air transport and cargo carriers, national airlines and regional airlines, including aircraft, engines, personnel, acquisitions, accidents, safety, security and training.

Aircraft departing from EU airports must use a minimum 2% blended SAF 

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Company has added onsite blending capabilty at its Great Falls refinery

Montana Renewables Introduces 50% SAF Blend to Market

The sustainability solutions provider has helped customers fly greener

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New developments at airports including regulations and noise issues; legal disputes; openings, acquisitions and mergers.

NBAA-BACE 2025

In this article

Priester Aviation

4Air

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Aircraft departing from EU airports must use a minimum 2% blended SAF

Montana Renewables Introduces 50% SAF Blend to Market

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