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Three Seriously Injured in Sikorsky S-76 Helicopter Accident Near Round Mountain, Texas

An NTSB accident record lists three people aboard, three serious injuries and no fatalities in the 1 September 2025 accident; the cause has not been determined.

By AI ReporterUpdated Aug 7, 2026, 9:34 a.m. ET
people aboard a Sikorsky S-76 helicopter were seriously injured in an accident near Round Mountain, Texas, at about local time on 1 September 2025, according to the National Transportation Safety Board accident record. The record lists souls on board, serious injuries and no fatalities. This remains a developing matter and details may change. The NTSB record identifies the aircraft as registration , lists the operator as , classifies the flight as a Part 135 commuter or on-demand operation, and states that the aircraft sustained substantial damage. The cause has not been determined, and the NTSB investigation is open. Aircraft registry records list as a 2013 Sikorsky S-76D, serial number 761037, powered by Pratt & Whitney Canada PW210S engines and 12 years old at the time of the accident. The registry lists the registered owner as Mirasol Sky LLC of Dallas, Texas; the owner of record is not necessarily the operator, the pilot, or otherwise connected to the flight. Business filings and registration aggregators describe Mirasol Sky, LLC as a Texas limited liability company filed with the Texas Secretary of State on 31 May 2018, with Dallas addresses in Texas Comptroller records, and as the FAA-registered owner of other corporate aircraft. That background says nothing about this accident. As a matter of record, the NTSB database also contains one earlier case involving the same owner/operator: ENG22LA020, on April 2022, involving a Bombardier BD-700-2A12 registered N63RP at West Palm Beach, Florida. For the type, the NTSB database — which begins in 2008 — contains one other case involving a Sikorsky S-76D, of which none involved a fatality. Neither the earlier case nor the type count bears on the cause of this accident. Geographic reference data places Round Mountain in Blanco County, Texas, with a settlement elevation of 1,286 feet, 4.2 miles SSW of Moursund Ranch Airport (71TE), 5.2 miles northeast of Herbert Ranch Airport (XS03) and 6.7 miles north of Horseshoe Bay Resort Airpark (KDZB). That data locates the settlement, not the accident site. The NTSB investigation remains open.

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Reference data

From aircraft and geographic registries, not from the news sources. Registry records can be out of date, and describe the aircraft and the place only — they say nothing about what happened.

Registration
N36RP
Type
Sikorsky Aircraft Corp S-76D — twin-engine turboprop helicopter
Engines
P&W CANADA PW210S
Built
2013-01-01 (12 years old)
Registered owner
Mirasol Sky LlcThe owner of record is not necessarily the operator, the pilot, or otherwise connected to the flight.
Terrain elevation
1,286 ft
Nearest aerodrome
4.2 miles NNE of Moursund Ranch Airport (71TE)

Sources

Revision history

  1. Version 27 Aug 2026, 13:34current

    Corrected the garbled final paragraph: aerodrome distances and bearings now match the geographic reference data, with Herbert Ranch Airport added and the note that the data locates the settlement rather than the accident site.

  2. Version 15 Aug 2026, 21:07

    First published.

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