.jpg)
Happy 55th Birthday to B747
The B747, known as Jumbo Jet, is celebrating its 55th anniversary since its first revenue-generating flight (with Pan Am ). On 30 September 1968, the first 747 rolled out of its Everett Plant in Washington State, first flew on 9 February 1969, and it entered service on 22 January 1970. Now, 55 years later, only three airlines around the world operate scheduled passenger flights with the 747 (more operate cargo variants). While the B747 is seen as a crowning achievement of American aviation engineering, no US-based airlines operate it as a commercial scheduled passenger aircraft anymore.
Interview with Dr Knezevic conducted by Reliabilityweb.com (click here) 
Physical Reality of Reliability Function - Presentation by Dr Knezevic at The Reliability Conference, organised by Reliabilityweb.com, Seattle, May 2019.
In a late 1950s, Reliability Theory was “created”. It was based on mathematical theorems rather then on scientific theories. The Reliability function for a system is determined by the reliability functions of the constituent components and their configurations within functional system. It is well-defined analytical functions obeying the axioms and theorems of mathematics. Systematic research performed by the author during several decades of the observable physical realities of in-service/operational life of functional systems in aerospace, military and nuclear power industries have clearly shown that determines from the mathematically implied reality. The presentation goes through a list of physically observed and undeniable facts that seriously impact the accuracy of the reliability predictions currently provided through reliability theory. To see the presentation follow the link: