Background information Edit
The registry number of the shuttle has never been legible in the movie, but was derived from a behind-the-scenes picture of the model that was later published in the reference book, Star Trek: The Next Generation - The Continuing Mission, p. 171.
The model was designed and built by Bill George and John Goodson at ILM and was later modified and reused as the USS Jenolan in the Star Trek: The Next Generation sixth season episode "Relics" in 1992. (Michael Okuda, "Departmental Briefing Year Six - Production", TNG Season 6 DVD special feature)
For further information on the studio model, see: SD-103 model.