One person was injured and a plane suffered “substantial” damage when a United Airlines flight collided with two de-icing trucks at Denver International Airport in March after taxiing without clearance, according to investigators.

The United plane was parked on a de-icing pad when the flight crew heard what they believed to be the de-icing crew wrapping up the task and debriefing, according to a preliminary report from the National Transportation Safety Board.

The flight crew conducted all post-de-icing checks and received clearance to taxi from air traffic control, the report stated. However, when they started to move, they hit the de-icing trucks, pushing at least one onto its side. At that time, the flight crew was informed by the de-icing team that they had not been cleared to exit the pad and that the plane had hit the trucks, according to the report.

United Airlines initially reported that a de-icing truck had hit the plane.

One truck driver sustained minor injuries in the March 6 collision, which happened at about 10:24 a.m. None of the 136 people on board the Nashville-bound United plane — including pilots, flight attendants and passengers — were injured, according to the report.

The United plane, a Boeing 737, suffered “substantial” damage to the wings, which hit the trucks, according to the preliminary report.

Federal transportation officials said the investigation remains ongoing and involves NTSB specialists, the Federal Aviation Administration and United Airlines.

The crash happened in the early hours of Feb. 13 when an Epic E1000 airplane carrying Tennessee residents Aaron Stokes, Jakson Stokes, Colin Stokes and Austin Huskey hit Emerald Mountain, 3 miles south of the Steamboat Springs Airport.

The flight departed from John C. Tune Airport in Nashville, Tennessee at 7:10 p.m. that evening and stopped for fuel at Kansas City Downtown Airport in Missouri at 11:03 p.m., the published Feb. 28.

Air traffic controllers gave the pilot approach information and then changed to a different radio frequency to communicate with him after he mentioned “RNAV 32,” an approach that is not authorized for night use.

The pilot acknowledged the frequency change but did not send out any other messages, NTSB officials said. Air traffic controllers then sent out an alert notice.

Federal investigators found an 80-foot crash scar at 8,175 feet elevation, 75 feet below the approximately 8,250-foot peak of Emerald Mountain.

Flight data showed the plane was operating normally at the time of the crash and was flying on autopilot, federal officials said. While the minimum descent altitude for that approach is 9,100 feet, the plane’s last recorded altitude was 8,221 feet, according to the NTSB.

Six days after the crash, the issued a notice that pilots are prohibited from taking the “RNAV 32” approach into Steamboat Springs used by the Epic E1000, agency records show.

The “Procedure NA,” which stands for not authorized, is in effect until October.

Federal officials will publish a final report for the crash, including the probable cause and contributing factors, within two years, according to the NTSB.

, 47; Jakson Stokes, 21; Colin Stokes, 21; and Austin Huskey, 37, were identified as the four people who died when a turboprop plane headed to Bob Adams Airport crashed on Emerald Mountain just outside of Steamboat Springs, the coroner’s office said in an email.

The crash happened early Friday under “unknown circumstances,” the National Transportation Safety Board said.

According to an obituary posted online, in Franklin, Tenn., and the organization helps small auto shops through professional development and coaching.

“Aaron was passionate about transforming the automotive sector, guiding shop owners to focus on strategic business development rather than just day-to-day operations,” his obituary states.

was the chief executive of Huskey Building Supply, also in Franklin, the company said in a post on Instagram.

“As part of the third-generation ownership of Huskey Building Supply, Austin Huskey continued his family’s legacy through generosity and ingenuity,” company officials wrote. “His faithful work saw Huskey continue to thrive in the midst of nationwide economic uncertainty.”

Both men were husbands and fathers, according to the statements.

Jakson Stokes was Aaron Stokes’ son, and Colin Stokes was his nephew, according to reporting from .

NTSB officials are investigating the crash, and a preliminary report will be released within 30 days, according to the agency.

An Epic Aircraft E1000 headed to Steamboat Springs crashed in a remote area on the south side of Emerald Mountain just after midnight Friday, Routt County Sheriff Doug Scherar and the National Transportation Safety Board confirmed.

County officials are working to notify next of kin before releasing the names of those who died, but believe three of the people who died belonged to the same family, Routt County Coroner Mitch Locke said.

In a statement, Scherar said the plane crashed as it was approaching the Bob Adams Airport in Steamboat Springs from the south. The crash site is near the top of Emerald Mountain in a remote area.

The area near the crash site is marked with yellow tape, and access is restricted. Scherar asked the public to respect the closure.

The circumstances around the crash are unknown and an NTSB investigator is headed to the scene and expected to arrive shortly, federal officials said Friday evening. The investigator will document the scene and examine the aircraft, which will then be moved to a secure facility to be evaluated further.

Federal flight data shows the turboprop plane was owned by ALS Aviation LLC in Franklin, Tenn., and was purchased in 2024, while the company was formed on Dec. 7, 2021.

Franklin is located about 20 minutes from the Nashville International Airport and 30 minutes from the John C. Tune Airport, which handles private jet and turboprop flights and is popular with musicians in the area. Information on the plane’s flight history is blocked on public tracking sites, a strategy some celebrities use to maintain privacy. The Epic E1000 is a higher-end single-engine turboprop.

Anyone who witnessed or has information about the crash can contact the NTSB at witness@ntsb.gov.

No one was injured in the accident, which occurred just before 6:15 p.m. near the intersection of Wolfensberger Road and Prairie Hawk Drive, said Taylor Temby, a police spokeswoman.

She did not immediately know how many people were in the plane.

As a result of the crash, Prairie Hawk Drive is closed from Wolfensberger Road to Switch Grass Drive, Temby said.

The and have both been notified of the crash, she said.

The two planes — a Cessna 172 and an Extra Flugzeugbau EA300, each carrying a pilot and a safety pilot — were trying to land on the same runway at the airport when they crashed and caught fire at about 10:40 a.m. on Aug. 31, according to a from the .

Federal investigators said the Cessna pilot was conducting flight instrument training at the airport with a safety pilot aboard, and he made multiple radio calls to alert the airport to his arrival.

He heard two other airplanes in the traffic pattern, and that one had already landed, as he continued to approach, according to the report.

The Extra 300 pilot was one of several that day, investigators said. He also made several radio calls stating his plan to land on runway 14, where the crash happened, after completing his flight sequence.

According to the report, the Extra 300 pilot heard another competitor would be landing before him, but didn’t hear any other planes in the traffic pattern. The Extra 300 pilot told investigators that the Cessna appeared below him on final approach, with no time to maneuver or avoid the collision.

The crashed planes came to a stop next to each other, off the edge of the runway, federal investigators said. A line of wreckage and debris extended roughly 500 feet from the planes, including separated wings and propellers.

Both people in the Cessna exited the plane with minor injuries, according to NTSB. The Extra 300 pilot sustained serious injuries but was able to get out of his aircraft. Federal officials said a post-crash fire prevented him from saving the safety pilot still trapped inside.

The safety pilot, , died from her injuries, according to the , which was hosting the competition that day.

Morris was a retired Air Force captain and an Air Force Wounded Warriors coach, leading injured active-duty Air Force members and veterans in sporting events, according to .

“She was doing something she loved, and I will forever remember her as one of the most kind and pure-hearted people I’ve ever met,” Morris’s friend, Allison Smith, told Denver7.

Investigators said both planes were destroyed in the crash, and the remains were taken to an NTSB facility for further examination.

The crash remains under investigation.

United flight 1093 took off from Denver International Airport at 5:51 a.m. Thursday and was cruising at approximately 36,000 feet above Utah when its windshield cracked, according to flight tracking software and .

Now, a company responsible for manufacturing weather balloons and collecting atmospheric data is saying that one of their balloons likely collided with the plane, causing the damage.

, which has previously on weather research, was first alerted to the fact that one of its balloons may have been responsible for the plane’s cracked windshield and subsequent diversion late Sunday night, three days after the incident, company spokesperson Kai Marshland said.

Within hours, the company sent a preliminary report to the National Transportation Safety Board and the Federal Aviation Administration, Marshland said. Company officials are working with both federal agencies to investigate further.

“We are grateful that, to our knowledge, there were no serious injuries and no loss of pressurization,” WindBorne officials said in a . “… We immediately rolled out changes to minimize time spent between 30,000 and 40,000 feet. These changes are already live with immediate effect.”

Commercial planes most often fly between 31,000 and 42,000 feet, .

WindBorne also plans to use live flight data to allow its weather balloons to autonomously avoid planes, even if planes are flying at a nonstandard altitude, according to the company’s statement.

The company has recorded more than 4,000 weather balloon launches, actively coordinating with the FAA and filing aviation alerts before each launch, according to WindBorne’s statement. The balloons weigh roughly 2.4 pounds at launch and get lighter throughout the flight.

“The system is designed to be safe in the event of a midair collision,” WindBorne officials stated.

United Airlines spokesperson Russell Carlton previously said that airplane windshields are designed with multiple layers and can still function safely if one of those layers is cracked. Carlton was unable to answer additional questions on Monday, including whether the pilot was injured by the cracked glass.

The Thursday flight was safely diverted to Salt Lake City International Airport, where the 134 passengers and six crew members on board switched planes and continued their journey to Los Angeles, Carlton said. The new plane touched down in California at about 1:23 p.m. PDT, nearly six hours late, according to .

NTSB officials did not respond to multiple requests for comment.

United flight 1093 took off from Denver International Airport at 5:51 a.m. Thursday, according to flight tracking software . The plane was cruising above Utah when the windshield cracked, .

The Boeing 737-8 was safely diverted to Salt Lake City International Airport, where it landed shortly after 7:30 a.m. , according to FlightAware.

NTSB officials are investigating what caused the crack.

It’s not yet clear how extensive the damage was, but the 134 passengers and six crew members on board were switched over to a new plane in Utah to finish their journey, United spokesperson Russell Carlton said in a statement.

The mutli-layered airplane windshields are designed to function safely if any of the layers sustain damage, Carlton stated.

The new plane landed in Los Angeles at 1:23 p.m. PDT, nearly six hours late, .

Federal investigators gathered radar, weather and flight recorder data, and also sent the cracked windshield to a NTSB lab for examination, according to the agency.

The original plane flew Sunday evening from Salt Lake City International Airport to Chicago Rockford International Airport, .

Carlton said United’s maintenance team is working to repair the airplane and return it to service.

This is a developing story and may be updated.

“We are heartbroken to share that there were no survivors in the single-engine plane crash that occurred earlier today, east of the Erie Municipal Airport runway,” .

The plane’s two occupants were not Colorado residents, police said. The pair’s identities had not been released as of Monday morning.

The crash happened at about 3:45 p.m. Sunday, Erie Police Department spokesperson Amber Luttrell said.

Investigators with the Federal Aviation Administration and National Transportation Safety Board were working to identify the cause of the crash, she said. As of Sunday evening, the Erie Municipal Airport at 395 Airport Drive remained closed for the investigation.

Neither agency responded to requests for comment, but NTSB officials that the crashed plane was a .

This is a developing story and may be updated.

The early morning plane ride on Sept. 5 was an instructional flight, according to the report from the National Transportation Safety Board. The pilot receiving instruction planned to purchase a similar airplane to the Beech P35 plane they were flying.

Perry “Matt” Feeney, 52, of Arvada and Lee “Rob” Hill, 64, of Greenwood Village were the pilot and passenger of the plane. The report does not specify who was receiving instruction.

No distress calls were recorded from either pilot, the report said.

A firefighter about 1.5 miles south of the crash heard the airplane fly overhead and then heard the engine stop completely, the report said. A woman who lives in a nearby neighborhood said she was walking when she saw the airplane flying on a different flight path and lower than she normally saw.

“She heard the engine go silent and looked up to observe the airplane in a ‘hard’ left bank towards the airport and in a descent,” the report read.

She thought the airplane was conducting training as it appeared normal, she said.

Just before hitting the ground, the plane banked right, according to camera footage from surrounding businesses.

The plane hit a paved driveway of an industrial facility, the report said. Portions of the right wing fell to the south of the debris path and the left wing was fractured.

The report said it appeared the plane collided with several concrete barriers. The landing gear and flaps were both found retracted, the report said.

The plane was retained for further examination, the report said.

The plane caught fire during the crash, causing a threat to a nearby structure and a large generator, county officials said. The incident was first reported as an explosion, and first responders contained that fire soon after.