No age requirement.
No formal ground school.
No FAA regulated flight time is required, but you must have at least a private pilot certificate.
Most flight school and insurance companies have a minimum flight time for the mult-engine rating, usually somewhere between 5 to 10 hours of dual instruction.
Besides meeting the requirements found in FAR 61.63(c) - see below - you'll likely want to get your high performance and complex training (with the appropriate endorsements) in order to ACT as PIC. Most multiengine aircraft are both HP and complex.
Basically, you have to do training in the areas of operation found in FAR 61.107(b)(2) that cover the multiengine rating at the private level.
FAR 61.63(c) Additional class rating. Any person who applies for an additional class rating to be added on a pilot certificate:
Flight School | Flight Training | Alien Flight Training | Flight Instruction | Aircraft Sales | FAA Writtens | Aircraft Maintenance | Aircraft Parts | Cessna Service Center | Cessna Pilot Center | Multi Engine Training | Light Sport Aircraft | High Performance Sign Off | Advanced Pilot Training | Introductory Flight Lessons | FAA Designated Flight Examiner on staff | Sport Aircraft | Sport Flying | Aircraft rentals | Gift Certificates | FAA Medicals | Flight Specials | FAA Safety Seminars | FBO | Pilot Supplies | Sport Cruiser - Light Sport Aviation | Sport Cruiser Sales in Long Island, New York, New Jersey, USA | CBRNe Convergence 2014 | CBRNe World Convergence 2014 | Hyatt Regency Long Island
Contact Us: Mid Island Air Service, Inc., 101 Hering Drive, Ronkonkoma, New York 11779, USA
Phone: 631 588-5400
or 1300 William Floyd Parkway, Shirley, NY 11967, phone:631 281-5400