Saturday, August 28, 2021

Thorp T-18, N78DW: Accident occurred August 28, 2021 near Boerne Stage Field Airport (5C1), Texas

This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. 

The National Transportation Safety Board did not travel to the scene of this accident.

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; San Antonio, Texas


Location: San Antonio, TX
Accident Number: CEN21LA390
Date & Time: August 28, 2021, 15:37 Local 
Registration: N78DW
Aircraft: MANTOOTH THORP T-18 
Injuries: 2 Serious
Flight Conducted Under: Part 91: General aviation - Personal

On August 28, 2021, about 1537 central daylight time, a Mantooth Thorp T-18 experimental airplane, N78DW, sustained substantial damage when it was involved in an accident near San Antonio, Texas. The pilot and passenger sustained serious injuries. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight.

According to the pilot, he was planning on conducting a short cross-country flight with his passenger. Before takeoff, he fueled the airplane with 10-15 gallons of fuel and added one quart of oil to the engine. He performed an engine run-up and departed runway 17. The takeoff and initial climb were normal, and as he turned the airplane on downwind to depart the traffic pattern, the engine began running rough. The pilot attempted to regain engine power by moving the engine mixture, but no change in engine performance was noted. Unable to maintain altitude, he performed a forced landing into trees. The airplane impacted trees, nosed down, and came to rest on its nose.

The airplane sustained substantial damage to the forward fuselage and both wings. The airplane was recovered for further examination.

Aircraft and Owner/Operator Information

Aircraft Make: MANTOOTH 
Registration: N78DW
Model/Series: THORP T-18 
Aircraft Category: Airplane
Amateur Built: Yes
Operator: On file
Operating Certificate(s) Held: None
Operator Designator Code:

Meteorological Information and Flight Plan

Conditions at Accident Site: VMC 
Condition of Light: Day
Observation Facility, Elevation: KSAT,789 ft msl 
Observation Time: 14:51 Local
Distance from Accident Site: 8 Nautical Miles 
Temperature/Dew Point: 31°C /21°C
Lowest Cloud Condition: Clear 
Wind Speed/Gusts, Direction: 7 knots / , 130°
Lowest Ceiling: Broken / 4000 ft AGL 
Visibility: 10 miles
Altimeter Setting: 29.94 inches Hg 
Type of Flight Plan Filed: None
Departure Point: San Antonio, TX (5C1)
Destination: Fredricksburg, TX (T82)

Wreckage and Impact Information

Crew Injuries: 1 Serious
Aircraft Damage: Substantial
Passenger Injuries: 1 Serious 
Aircraft Fire: None
Ground Injuries: 
Aircraft Explosion: None
Total Injuries: 2 Serious 
Latitude, Longitude: 29.404569,-98.483959 (est)

BOERNE, Texas - Two people are injured following a plane crash.

No one expects a plane to land in their neighbor's yard. Even fewer would expect a plane to land in their own yard. Yet, that was the scene Saturday afternoon when a plane crashed between two homes in Boerne.

Sometime before 4:00 p.m. on Aug 28, a small plane tumbled down to a field between two houses at Bridlewood Trail near Boerne Stage Road. The plane was most likely trying to reach the Boerne Stage Airfield only less than a mile away.

While two people were reported injured, the damage does not appear to be life-threatening.




BOERNE, Texas – Two people are recovering in the hospital following a small plane crash near Boerne Stage Field Airport, according to the Bexar County Sheriff’s Office.

The plane crashed just before 3 p.m. behind a home off of Boerne Stage Road and Bridlewood Trail.

It’s unclear what led to the crash, but deputies said a man and a woman were injured from the impact.

A family that lives near the crash site said they helped rescue the pair inside of the aircraft when it crashed.

Officials said their injuries are not life-threatening, but they were taken to an area hospital for further treatment.

No property damage was reported, aside from the wrecked aircraft, according to the BCSO.

Sheriff’s deputies, state troopers, and the Leon Springs Fire Department are still working the scene.

Further details are limited at this time. We’ll bring more updates as they become available.




SAN ANTONIO — Two people were injured when a small plane they were traveling in crashed along Bridlewood Trail near the Boerne Stage Field Airport Saturday afternoon, Bexar County authorities confirmed to KENS 5.

The area is residential, but there was no property damage to homes in the area, Bexar County Sheriff's Office Spokesperson Johnny Garcia said. 

The two individuals were taken to a local hospital and are expected to be OK; Leon Springs Fire officials say they were the only passengers onboard. 

Authorities added the Federal Aviation Administration is expected to take over the investigation. 

It's still unclear what caused the plane to go down, but Leon Springs FD said the pilot "reported a mechanical failure" immediately beforehand. 

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