*Crown Prince Muqrin bin Abdul Aziz is a former air force pilot who has a passion for astro**my, reading and agricultural research. Custodian of the Two Holy Mosques King Salman appointed Prince Muqrin as Crown Prince and deputy premier and Prince Mohammed bin Naif as deputy Crown prince, second deputy premier and interior minister on Friday, to strengthen the Kingdom's political stability. "The first decision taken by King Salman after becoming the new ruler was to implement the royal decree issued by King Abdullah, which was the appointment of Prince Muqrin as Crown prince," Al-Arabiya.net said in a report.