Greenfield International Airport: Difference between revisions

Greenfield International Airport (view source)

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 Greenfield International has 3 runways, 09R/27L, 09L/27R, and 03/21, all made from concrete. The 27L/R parallel runways have a separation of only 208 meters (682 feet), too little for a conventional SOIA approach to be carried out; a SOIA approach requires runways to be at least 229 meters (750 feet) apart. Therefore, at peak hours for aircraft movements where parallel takeoffs/landings are used, it is temporarily a Category C airport, meaning that pilots have to carry out special training in a simulator to land when parallel landings are in effect.
-It is notable as one of the high-traffic international airports with unusually short runways, allowing aircraft up to the Boeing 767-200 or Airbus A330-200 to take off and land (or other larger aircraft albeit with highly reduced fuel and capacity). Due to this, most international traffic comes from Los Angeles or San Francisco which are both roughly 2 hour drives away. If a relatively large plane does decide to land here, they must use a high autobrake setting, and if one takes off here, full thrust is always required (regardless of runway condition) and the brakes are required to be held onto until the engine reaches full thrust.
+It is notable as one of the high-traffic international airports with unusually short runways, allowing aircraft up to the Boeing 767-200 or Airbus A330-200 to take off and land (or other larger aircraft albeit with highly reduced fuel and capacity). For context, a fully loaded and fueled Boeing 747-8 requires about 10,000 feet of runway to lift off the ground, which is about 58% more distance than the longest runway here.
+Due to this, most international traffic comes from Los Angeles or San Francisco which are both roughly 2 hour drives away. If a relatively large plane does decide to land here, they must use a high autobrake setting, and if one takes off here, full thrust is always required (regardless of runway condition) and the brakes are required to be held onto until the engine reaches full thrust.
+There have been cases of runway overruns due to unfavourable conditions resulting from the short runways, most notably [[Golden Pacific Flight 8]] which overran the runway during a strong crosswind and crashed through the eastern airport fences and onto [[I-205]]. This prompted a complete closure of said section for 2 weeks and resulted in heavy traffic in the [[Lannex]] roads due to diversion.
+==== Simultaneous Offset Instrument Approach ====
+The airport runways that head west were granted SOIA compliant in 2016 after a slightly intense vote in the FAA administration, now being one of the 3 airports in the US actively conducting SOIA approaches (San Francisco and Cleveland International).
+However, such approaches may not be used after sunset (times are directed by ATC) after the [[Vision Airlines Flight 19]] incident. In 2021, due to concerns regarding wake turbulence from such little runway separation, parallel landings (with SOIA approaches) and takeoffs may not be carried out when resultant crosswinds are over 10 knots.
 === Hotel ===