PreS-Gr 1-- A young narrator describes her first airplane trip to visit her grandparents. Her bear acts as a combination security blanket and information vehicle, allowing her to comfort him as she describes the security check-in, take off, dinner on board, etc. The layout of the watercolor illustrations is executed in circles, small scenes , and full - page spreads offering a pleasing diversity. The cartoon style art is a mite cute, and the thrill of the experience seems forced with lines such as, ``Oh--we are going up. Bear, we're really flying! Aren't you excited, Bear?'' If you need a book that mirrors the experience, this is moderately successful. Surprisingly, little is available for this age on the subject. Pat Ross' Your First Airplane Trip (Lothrop, 1981, o.p.) covers much of the same material, but is less attractive. Byron Barton's Airport (Crowell, 1982) is graphically and dramatically superior, but not as personally reassuring. --Caroline Ward, Nassau Library System, Uniondale, N.Y.