a specific make and basic model of aircraft,  Including modifications thereto that do not  change its handling or flight characteristics.  Examples include: 737-700, G-IV, and 1900; and  2. As used with respect to the certification of  aircraft, means those aircraft which are similar  in design. Examples include: 737-700 and 737­ 700C; G-IV and G-IV-X; and 1900 and 1900C.  • Privileges—define where and when the pilot may fly,  with whom they may fly, the purpose of the flight, and  the type of aircraft they are allowed to fly.  • Limitations—the FAA may impose limitations on a  pilot certificate if, during training or the practical test,  the pilot does not demonstrate all skills necessary to  exercise all privileges of a privilege level, category,  class, or type rating.  This system of definitions allows the FAA to group and  regulate aircraft to provide for their safe operation.  Endorsements, a form of authorization, are written to establish  that the certificate holder has received training in specific skill  areas. Endorsements are written and signed by an authorized  individual, usually a certificated flight instructor (CFI), and  are based on aircraft classification.  [Figure 1-21]  The type of intended flying influences what type of pilot’s  certificate is required. Eligibility, training, experience,  and testing requirements differ depending on the type of  certificates sought.  [Figure 1-20]  Each type of pilot’s  certificate has privileges and limitations that are inherent  within the certificate itself. However, other privileges and  limitations may be applicable based on the aircraft type,  operation being conducted, and the type of certificate.  For example, a certain certificate may have privileges and  limitations under 14 CFR part 61 and part 91.  To become a sport pilot, the student pilot is required to have  flown, at a minimum, the following hours depending upon  the aircraft:  To earn a Sport Pilot Certificate, one must:  When operating as a sport pilot, some of the following  privileges and limitations may apply.  Figure 1-20.  Front side (top) and back side (bottom) of an airman  certificate issued by the FAA.  1-16  • Fly during the daytime using VFR, a minimum of  3 statute miles visibility and visual contact with the  ground are required  • Carry a passenger and share expenses (fuel, oil, airport  expenses, and aircraft rental)  • Operate as pilot in command (PIC) of a light-sport  aircraft  • Hold a current and valid driver’s license as evidence  of medical eligibility  • Be able to read, write, and understand the English  language  • Be at least 17 years old to test for a sport pilot  certificate (16 years old for gliders or balloons)  • Be at least 16 years old to become a student sport pilot  (14 years old for gliders or balloons)  • Lighter-Than-Air: 20 hours (airship) or 7 hours  (balloon)  • Rotorcraft (gyroplane only): 20 hours  • Glider: 10 hours  • Weight-Shift Control (Trikes): 20 hours  • Powered Parachute: 12 hours  • Airplane: 20 hours  Sport Pilot  Pilot Certifications  Privileges: 