Tag Archives: ASDE-X

890 Airport Surface Detection Equipment

More on the Laguardia crash from the NTSB and ASDE-X; a near-collision at LAX involving a Frontier flight and two trucks; a United Airlines plane struck two de-icing trucks; the FAA requested funding for 2,300 controller trainees; a Navy MQ-4C Triton reconnaissance drone went missing; and air taxis are coming to Utah.

Aviation News

Seconds before LaGuardia crash, controller cleared the fire truck to cross the runway, NTSB says

The NTSB has determined that a LaGuardia Airport air traffic controller cleared the fire truck to cross a runway 12 seconds before the Air Canada flight touched down. The two pilots were killed in the resulting collision. The NTSB has yet to identify how this was allowed to happen.

Unanswered questions:

  • Are two overnight duty controllers enough?
  • Why didn’t a runway warning system sound an alert?
  • Who was coordinating air and ground traffic?
  • Did the fire truck hear the controller’s last-second pleas to stop?

LaGuardia has an advanced surface surveillance system called Airport Surface Detection Equipment, Model X (ASDE-X). This system displays the locations of planes and vehicles to the Controllers. The fire truck didn’t have a transponder, but the emergency vehicles behind it stopped in time. Possibly, the close proximity of the vehicles merging kept the system from triggering an alarm.

ASDE-X is a surveillance system that uses radar, multilateration, and satellite technology to allow air traffic controllers to track the surface movement of aircraft and vehicles. It was developed to help reduce critical Category A and B runway incursions.

Graphic image of airport layout showing different sensors used for ASDE-X.
ASDE-X overview from FAA presentation.

The ASDE-X collects data from a variety of sensors:

  • Surface surveillance radar located on top of the air traffic control tower and/or surface surveillance radar located on a remote tower
  • Multilateration (MLat) sensors located around the airport
  • Airport Surveillance Radars, such as the Mode S
  • Automatic Dependent Surveillance — Broadcast (ADS-B) sensors
  • Terminal automation system to obtain flight plan data.

Multilateration (MLat) sensors determine an object’s position by measuring the time differences of signals received from multiple known locations. They are commonly used in applications such as air traffic control and navigation to accurately track the locations of vehicles or devices.

Frontier Airlines Pilots ‘Slam On the Brakes’ to Avoid Colliding With Two Trucks at Los Angeles International Airport

Frontier Airlines flight F9-3216, an Airbus A321, was taxiing for departure at Los Angeles International Airport (LAX) when it encountered two trucks that cut it off. To avoid a collision, the pilots were forced to “slam on the brakes.”

The Frontier pilot told LAX controllers, “It happened so fast, both of us are like holy shit and slammed on the brakes… I might have to call the flight attendants, make sure everyone is alright in the back. It was real close… close as I’ve ever seen.”

Plane suffered ‘substantial’ damage after hitting de-icing trucks at Denver airport

On March 6, 2026, a United Airlines plane struck two de-icing trucks at Denver International Airport (DIA) as it was taxiing out of the de-icing pad. No on-board injuries occurred, although one de-icing agent suffered minor injuries. The plane suffered substantial damage. There was some confusion about whether the plane had been cleared to leave the de-icing pad.

FAA proposes to hire 2,300 air traffic controllers in budget request

At the end of September, the FAA employed 13,164 air traffic controllers, about 3,500 short of the targeted staffing level. The FAA’s fiscal 2027 budget request proposes funding to hire 2,300 air traffic controller trainees, with about $95.4 million earmarked for that effort. A WSOC Charlotte, SC video reports that gamers are being offered paid training and other incentives if they apply.

Navy MQ-4C Triton’s Fate Unknown After Disappearing From Flight Tracking Over Persian Gulf

Open-source tracking indicates the surveillance drone suddenly turned toward Iran and transmitted the universal 7700 emergency code. It descended from more than 50,000 feet toward approximately 9,000 feet, then disappeared from public tracking networks.

The Northrop Grumman MQ-4C Triton is the maritime version of RQ-4 Global Hawk. It is a high-altitude long-endurance (HALE) unmanned surveillance aircraft flown by the United States Navy and the Royal Australian Air Force. The Navy had 20 Triton aircraft in service in 2025, and had planned to acquire seven more. The unit cost was estimated to be just over $238 million.

See: US Navy MQ-4C Triton Vanishes Near Iran After Emergency Code: Did Tehran Just Down America’s US$200 Million Spy Drone?

Utah’s getting air taxis sooner than expected. Here’s when.

Paul Damron, the Utah Department of Transportation (UDOT) air mobility program manager, says unmanned electric aircraft might be carrying packages and medical supplies as early as this summer. The FAA has designated UDOT to lead one of eight national pilot programs focused on integrating electric aircraft into various airspaces.

Initially operating out of Utah’s airports, the long-term goal is to create “vertiports” and connect them to existing transit modes. Under the uFLY pilot program, Utah leads a five-state partnership with Oregon, Idaho, Arizona, and Oklahoma. Aircraft will be tested under a variety of environmental conditions.

Hosts this Episode

Max Flight, our Main(e) Man Micah, and Rob Mark.

774 Why Flying is Miserable

We talk with the author of Why Flying is Miserable: And How to Fix It. In the news, the NTSB comments on the increase in near-miss aviation incidents, the FAA will appoint an ARC to examine pilot mental health, an NTSB preliminary report on the Hawker/Cessna collision, cargo pilots are offered $250,000 to go regional, and United adjusts their frequent flyer program.

Guest

Ganesh Sitaraman, author of Why Flying is Miserable: And How to Fix It.
Ganesh Sitaraman

Ganesh Sitaraman is a policy expert, Vanderbilt law professor, and the author of the book titled Why Flying is Miserable: And How to Fix It. The book was written to stimulate conversation about the state of air travel in the U.S. and what might be done to make it serve more Americans, more efficiently, with fewer federal bailouts and headaches.

Why Flying is Miserable takes the reader through the history of the U.S. airline industry and how deregulation has brought us to where we are today. In the early years of flight through the 1930’s, policies were defined by the needs of airmail. Then in the 1930s to the 1970s, airlines were regulated largely under a public utility model, ultimately through the Civil Aeronautics Board. This regulated oligopoly was changed to a free market model with deregulation in 1978. The resulting unregulated oligopoly resulted in cutthroat competition in the 1980s which led to consolidation without regulation.

Ganesh describes why flying is miserable for the flying public and miserable for the industry itself. With no changes, another bailout situation will present itself sooner or later, he argues.

Why Flying is Miserable: And How to Fix It book cover

Ganesh offers some reform principles that consider the dynamics of the industry and the goals of a national airline policy: no more flyover country, no bailouts or bankruptcies, and fair and transparent prices. He offers some creative and thought-provoking approaches to achieve those principles.

Ganesh is director of the Vanderbilt Policy Accelerator for Political Economy and Regulation. He’s the author of numerous books, previously a senior advisor to Elizabeth Warren for her presidential campaign, and is a member of the Administrative Conference of the United States and the FAA’s Commercial Space Transportation Advisory Committee

Follow Ganesh on X (Twitter) at @GaneshSitaraman. Why Flying is Miserable: And How to Fix It is available wherever books are sold, as an Audible Audiobook, and on Kindle.

Aviation News

NTSB chair says US near-miss aviation incidents ‘clear warning sign’

National Transportation Safety Board (NTSB) Chair Jennifer Homendy told a U.S. Senate aviation committee that the increase in near-miss aviation incidents is a “clear warning sign that the U.S. aviation system is sharply strained.” Homendy stated the need for “more technology for runway and cockpit alerting… We cannot wait until a fatal accident forces action.”

American Airlines dangles a $250,000 bonus to lure pilots from FedEx and UPS to fill job shortage that has led to canceled and delayed flights

American Airlines regional carrier PSA Airlines is reportedly offering cargo pilots a $175,000 bonus in the first paycheck, with an additional $75,000 after one year. As the airline cancels flights due to staffing shortages, FedEx and UPS are experiencing reduced demand and flight cuttings. So those carriers are encouraging their pilots to consider the American offer.

Hawker Crew Ignored Instructions from ATC in Houston Bizjet Collision

As previously reported, the left wing of a Hawker 850 (N269AA) hit the vertical stabilizer of a Cessna Mustang (N510HM) landing on a crossing runway at Houston Hobby Airport (KHOU). According to the NTSB preliminary report:

HOU has intersecting runways, and the local controller had instructed the crew of N269AA [Hawker] to line up and wait (LUAW) on runway 22. The crew of N269AA said in a post-accident interview that they believed they heard that they were cleared for takeoff when they took off. The collision between the two airplanes occurred at the intersection of the two runways.

N269AA was in the takeoff roll on runway 22 when the flight data/clearance delivery controller alerted the local controller about N269AA’s movement, and at 1519:47 the local controller stated “november nine alpha alpha, stop, hold your position.” There was no response from the crew of N269AA, and at 1519:53 the local controller again stated, “alpha, alpha, hold your position, stop,” to which there was still no response.

The flight crew from N269AA stated in their post-accident interview they had a rudder bias alert, and a pitch trim alert which they had to resolve as they were in the takeoff roll.

NTSB

HOU tower is equipped with an Airport Surface Detection Equipment – Model X (ASDE-X) system that the FAA describes as “a surveillance system using radar, multilateration and satellite technology that allows air traffic controllers to track surface movement of aircraft and vehicles. It was developed to help reduce critical Category A and B runway incursions.”

ASDE X collects data from 

  • Surface surveillance radar located on top of the air traffic control tower and/or on a remote tower
  • Multilateration sensors located around the airport
  • Airport Surveillance Radars such as the Mode S
  • Automatic Dependent Surveillance — Broadcast (ADS-B) sensors
  • Terminal automation system to obtain flight plan data.

By fusing the data from these sources, ASDE-X can determine the position and identification of aircraft and vehicles in the airport movement area, as well as aircraft flying on final approach to the airport. Thirty-five major airports have received ASDE-X.

FAA Naming Panel to Address Pilot Mental Health Issues

The FAA says it is appointing a Pilot Mental Health Aviation Rulemaking Committee (ARC). The committee will provide recommendations on breaking down the barriers that prevent pilots from reporting mental health issues to the FAA. FAA Administrator Mike Whitaker said, “Mental health care has made great strides in recent years, and we want to make sure the FAA is considering those advances when we evaluate the health of pilots.”

The FAA said it would also work to address uncompleted recommendations from a July inspector general’s office report on pilot mental health, which found the FAA’s “ability to mitigate safety risks is limited by pilots’ reluctance to disclose mental health conditions.”

Source: FAA to Appoint Rulemaking Committee to Examine Pilot Mental Health.

In addition, the FAA will work with the ARC to address open recommendations from the July 2023 DOT Office of Inspector General report on Pilot Mental Health Challenges, which found that the agency has “comprehensive procedures to evaluate pilots’ psychological health.”

FAA fact sheet on pilot mental health oversight, Pilot Mental Fitness.

United Airlines tweaks frequent flyer program to reward credit card spending 

UA says they won’t change overall requirements for elite frequent flyer status in 2024. Instead, the airline will give customers 25 qualifying points for every $500 they spend on co-branded credit cards. United will also lift caps on credit card spending that can qualify for elite status. Presently, customers earn 500 points for every $12,000 spent.

Australia Desk

The Indo-Pacific International Maritime Exposition (IndoPac 2023) was held between November 7th and 9th in Sydney, and Grant was in attendance, gathering content for Australian Defence Magazine.  We take a brief look at the expo, particularly in terms of a focus on maritime aviation and defence.

Indo Pacific International Maritime Exposition

Local company Rosebank Engineering has secured a contract for RAAF F-35 component maintenance, activating their wheel & brake repair depot, east of Melbourne.

Rosebank Engineering activates F-35 repair depot

The Republic of Singapore Air Force (RSAF) this week celebrated 30 years of operations at RAAF Base Pearce in Western Australia, conducting lead-in and advanced training for their military pilots.  The Australian Defence Force enjoys a close working relationship with the Singaporeans not only at Pearce but in several other aspects of training including CH-47 Chinook training at the Army Aviation Regiment’s base at Oakey in Queensland.

The RSAF Commemorates 30 Years of Training in Pearce, Australia

And speaking of maritime topics, what exactly was Steve eating for lunch that has Grant so concerned?  Tune in to find out!  Anchors away….

Mentioned

Frank Borman (left) and Rob Mark (right) at the airport.
Frank Borman and Rob Mark.

Video: Stackhat (Australian ad – 1988)

Hosts this Episode

Max Flight, Rob Mark, and Brian Coleman. Contribution by Grant McHerron and Steve Visscher.