Launched by Rose Hynes, chair of airport opertor, the Shannon Group, the total collection comprises 2,300 diecast model aircraft, with over 1,500 of them on display and the rest to be rotated over time.
The collection is located in the Departures Lounge, giving it airside security, and has been assembled over the past five decades by retired Limerick city man Michael Kelly (67), whose love affair with aircraft started as a boy at Shannon in the late 1950s.
The unique collection includes model aircraft of 40 years old and more, with all 1:200 in scale and replicas of aircraft dating back to the 1940s.
Launching the permanent exhibition, Hynes said: “Shannon is a place of homecomings and this is certainly among the best of them. This permanent display is a superb addition to the airport, a gift to passengers.
"Making our passengers happy, making their time in our airport go by easily, letting them know we care, is something we work hard at. This exhibition is an example of that.”
The retired Limerick man decided to locate the collection at Shannon as his infatuation with aircraft began there as a young boy.
“Today is a dream come true. I fell in love with aircraft in the late 1950s, the first minute my dad brought me to Shannon Airport to spot aircraft as they landed and took off," enthused Kelly.
"So, to have spent a lifetime assembling this collection and bring it back to where it all started is more than I could have hoped for."
The collection, which Mr Kelly began assembling from his mid-teens, outgrew his old farmhouse home at Farranshone, Limerick but the retired plumber/fitter has decided to bring it all back ‘home’ to Shannon.
The majority of it is on display, with other aircraft held back and set to be rotated as time goes on.
It includes every popular aircraft to have flown as well as many lesser known, right up to modern day versions.
Niall Maloney, director of airport operations at Shannon, noted: "Michael, through his determination and love of aviation, has managed to amass the largest collection of model aircraft in the world.
"It’s in keeping with an airport that has probably broken more frontiers than any other of its size in the world.”