Why Boeing CEO Dennis Muilenberg keeps apologizing — Quartz at Work

https://qz.com/work/1737925/why-boeing-ceo-dennis-muilenberg-keeps-apologizing/amp/

India Threatens to Ground Jets Unless Engines Fixed, After Four Incidents

https://www.bloomberg.com/amp/news/articles/2019-11-01/pratt-s-jet-engine-woes-deepen-as-india-steps-up-pressure

Pratt turbines on IndiGo jets suffered four faults in one week 

US Air Force Hopes to Leverage Commercial Progress on ‘Air Taxi’ Vehicles - Avionics

https://www.aviationtoday.com/2019/10/30/us-air-force-hopes-leverage-commercial-progress-air-taxi-vehicles/