> Most of the "hard to decipher" identifiers become obvious if one knows the name of the airport rather than the city served...Grand Rapids, Michigan, has the Gerald R. Ford airport (GRR).
I would have just assumed it was Grand Rapids.
I would have just assumed it was Grand Rapids.
Edit: I see that the article is updated online. Still think that GRR is for Grand Rapids though.
Edit2: Source Found! A NTSB report froma crash in December of 1998 cites a weather reading from " Kent County International Airport (GRR)" (Source: http://www.ntsb.gov/aviationquery/brief2.aspx?ev_id=20001211...). I move that this shows that the airport code was GRR prior to being re-named Gerald R. Ford, and that GRR stands for Grand Rapids.
Edit3: Further a US DoT doc from April 1998, lists Kent County International as GRR in Appendix D: http://onlinepubs.trb.org/onlinepubs/sr/sr255/apndx.pdf