Skip to content

Atlas / NTSB / FTW96LA121

NTSB CAROL · Event

Event FTW96LA121

1996-02-16 CARRIZO SPRINGS, Texas, United States None 1 aircraft Status: Completed

Registry · N67065

FAA Aircraft Registry record.

Make / Model

HILLER-OSBORN UH-12D

Year of manufacture

1957 · 39 years old at event

Engine

LYCOMING VO-435 SERIES (260 hp)

Seats / Engines

3 seats · 1 engine

Last airworthiness date

19760315

ADS-B equipped

Yes — Mode-S A8DF00

Registrant of record

FORT WOLTERS HELICOPTER INC

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

a loss of engine power for undetermined reasons, and the pilot's improper touchdown.

Factual narrative

On February 16, 1996, at 1015 central standard time, a Hiller UH-12D helicopter, N67065, registered to, and operated by T.M. Davis Construction Inc., as a Title 14 CFR Part 91 aerial observation flight, was substantially damaged following a loss of control while maneuvering near Carrizo Springs, Texas. The private pilot and his passenger were not injured. Visual meteorological conditions prevailed for the personal flight for which a flight plan was not filed. The flight originated at the ranch office at approximately 0830. The pilot reported that the helicopter departed the Windship Ranch for a local flight to spot deer. "While cruising at about 50 feet and about 40 knots indicated airspeed and after making a 360 degree turn, the engine either lost power or for some other reason would not maintain adequate rotor RPM." The pilot further reported that he lowered the collective in an attempt to increase rotor RPM, "but, the RPM would not reach the minimum required to fly." Subsequently, he landed the helicopter hard, and "the main rotor blade struck the tailboom, severing the boom and 3 feet of blade." The helicopter came to rest on its side. Examination of the airframe and engine by the FAA inspector did not reveal any pre-mishap discrepancies. The reason for the loss of engine power and rotor RPM could not be determined. The helicopter departed the ranch's office on a local flight to spot deer. 'While cruising at about 50 feet and about 40 knots indicated airspeed and after making a 360 degree turn, the engine either lost power or for some other reason would not maintain adequate rotor RPM.' The pilot lowered the collective in an attempt to increase rotor RPM, 'but, the RPM would not reach the minimum required to fly.' Subsequently, he landed the helicopter hard, and 'the main rotor blade struck the tailboom, severing the boom and 3 feet of blade.' The helicopter came to rest on its side. Examination of the airframe and engine did not reveal any premishap discrepancies. The reason for the loss of engine and rotor RPM could not be determined. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1996_FTW96LA121.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

Related research

What the literature says.

Academic papers and agency reports matching this event's aircraft type or causal vocabulary (loss of control). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.

Browse the full corpus — academia portal ↗