To show you how flexible and innovative our present airspace system can be in the face of almost impossible runway conflict and congestion, look at Teterboro Airport just west of New York City. Teterboro's Runway 19 points almost directly at Newark, and the airports are only a few miles apart. When wind direction dictates that Runway 19 be used at Teterboro, the same wind means the parallel Runway 22s will be active at Newark. The stream of airliners crossing Teterboro on final for Runway 22 at Newark are so low they don't allow enough room for standard IFR separation for Runway 19 departures from Teterboro.
The solution for Teterboro departures, at least when the weather is 3,000 foot overcast with three miles visibility or better, is the unique Dalton departure. Pilots who ask for the Dalton — it cannot be assigned without pilot request — take off on Runway 19, but are actually departing VFR. At 800 feet in the climb a pilot flying the Dalton turns right to 280 degrees and continues the climb to 1,300 feet with a maximum speed limit of 190 knots. As soon as the turn is completed and the controllers issue a clearance to climb above 1,300 feet, the flight is automatically converted from VFR to IFR and everything is back to normal ATC procedures.
The Dalton is a bit of a rule beater because it puts the burden to maintaining separation on the pilot departing Teterboro for the first few miles because an airplane approaching Newark may not always have the full 1,000-foot vertical separation IFR standards require. But it's no different than a visual approach where traffic separation obligation transfers to the pilots, and it gets airplanes out of Teterboro without having to wait for a gap in the stream of Newark arrivals.
Rule Beater? Flexible? Innovative? Yes, it's a brilliant weasel move that just begs to be made into an Flight Management System (FMS) or Required Navigation Procedure (RNP) departure. Separation? I'll let you, the users and any NTSB investigators that read this be the judges.
Here's the chart for the Dalton.I haven't seen this much red since the stock market dive in '87. Just some notes: the pilot has to ask for it, maybe because assigning it would make somebody liable, and caution wake turbulence, Newark arrivals descending overhead from 3000 to 1800 feet. Technically, it's all clean and legal. The TEB departure remains clear of the controlled Class B airspace. The pilot asked for it. The 1300 foot restriction on the climb has 500 feet of VFR separation from the promised descent of the EWR arrivals (regardless of weight class). Ahhh, but a funny thing happened on the way to Liberty (International).
The EWR ILS RWY 22L approach.Somehow, someway, the crossing altitude at AYRON got changed from 1800 to 1481 feet without being included on the Dalton Departure plate. What that means is that you now could have 1.7 miles and 181 feet of separation under a heavy jet instead of the printed, and promised, 1.7 miles and 500 feet.
Again, like I said, all clean and legal, technically, because the pilot requested it. Ethically, morally, another falsehood foisted upon the users because of the lie printed there in black and white. The controllers can't do a thing about it. The users can. Stop using this deathtrap procedure now that you have the facts. The NTSB can. Cancel the procedure before our luck runs out. Heck, the FAA can. After-all, "we do the right thing, even when nobody is looking."
Oh, and if you are a pilot at TEB, bear in mind that since Marion Blakey dropped the "schedule less flights" bomb, Continental Airlines (the major user of EWR) has started to consider bigger planes as a means of decreasing the amount of flights. Wake turbulence roulette at its finest.
