I route-checked into TGU while dispatching for Air Florida, which had service MIA-TGU-SAP-MIA. I decided to ride down and see things for myself after one of our captains had related the following story to us a couple of weeks earlier..
The captain of one MIA-TGU flight, Ralph XXXX, dragged himself back into our office upon his return to MIA one afternoon, looking like he'd been through the worst sim ride in his life. He wasn't quite happy, and it took us a few minutes to get the story from him, and a couple of hours to figure out what happened.
TGU is a challenging airport, as the photos show. At the time (1982) they had a VOR approach, but the VOR was almost always inop. There were two 2 NDBs near the airport, one north, the other south, and for simplicity' sake, I'll just refer to them as ABC and XYZ.
Captain Ralph shot two approaches into TGU (since they were IMC) and missed both times. The cloulds broke just in time, and he got in visually.
Why did he miss? For reasons that have never been explained, the Honduran goverment folks (without NOTAMing *any* of this) had apparently gone out to the ABC site, removed the transmitter guts, and reinstalled it at the XYZ location. The XYZ transmitter guts were similarly re-installed at the ABC location. Accordingly, he was about 180 degrees off in his orientation to the airport (on top of the cloud deck) and wasn't about to fool around with an IMC letdown in mountainous terrain.
I'll never forget his remark that the navaids down there were strapped to the backs of mountain goats, aimlessly wandering the hills...
Never heard anything from the Hondurans, but ABC and XYZ were swapped back to their proper places a couple of days later....
ALL views, opinions expressed are mine ONLY and are NOT representative of those shared by Southwest Airlines Co.