FTW96LA275

NTSB accident investigation · Rockwell S2R · Las Animas, CO · June 24, 1996

Accident · No injuriesLimited investigationFinal report
Date
June 24, 1996, 11:30 local (17:30 UTC)
Place
Las Animas, CO
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N4907XRockwell S2R
Weather
Visual (VMC) · Day
Status
Completed · report September 19, 1996
Report
Approved by Office Director
FAA report
19960624015049A
Case key
19883

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

inadequate preflight planning/preparation by the pilot. Factors relating to the accident were: the unfavorable wind condition for takeoff, and the terrain condition beyond the end of the runway.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

OverrunTakeoff - roll/run
Preflight planning/preparation - inadequatePilot in commandCause
Weather condition - unfavorable windFactor
Aborted takeoff - not performedPilot in command
Load jettison - performed
In flight collision with terrain/waterTakeoff
Terrain condition - dirt bank/rising embankmentFactor

Analysis

During the takeoff roll on runway 26, the aircraft did not attain sufficient airspeed to achieve flight. The pilot reported that the airplane did not accelerate at a continuous rate, and there was insufficient runway remaining to abort the takeoff. He dumped the load, but the aircraft overran the end of the runway and went up an incline bank, which launched it into the air. A stall ensued and the aircraft impacted the ground in a nose down 15 degree left wing down attitude. Wind at the time was from 010 degrees at 10 miles per hour.

Factual narrative

On June 24, 1996, at 1130 mountain daylight time, a Rockwell S2R, N4907X, exited the end of the runway during the takeoff roll at Las Animas County Airport, Las Animas, Colorado. The commercial pilot was not injured and the aircraft sustained substantial damage. The flight was a local area aerial application flight operating under Title 14 CFR Part 137. Visual meteorological conditions prevailed and no flight plan was filed.

According to the pilot, he was taking off from runway 26 and did not clear a ditch located at the end of the runway. Density altitude at the time was 6,500 feet and the wind was reported by the pilot to be from 010 degrees magnetic at 10 miles per hour.

The pilot said that airspeed was not building at a "continuous rate" and he had insufficient runway available to abort the takeoff. He said he dumped the load (24D herbicide) and the aircraft exited the end of the runway up an inclined ditch bank which "launched" the aircraft into the air. The aircraft stalled left wing down and impacted the ground in a nose down 15 degree left bank.

Aircraft

Registration
N4907X
Reported as
Rockwell S2R
Category
Airplane
Serial number
2099R
Airframe hours
8,000
Engine
P&W R-1340-AN1, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Air Care, Inc., doing business as Maverick Aviation
Registered owner
Daniel J. Tinnes
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · February 1, 1996 · 100 hours before
Departed
7V9
Airport
7V9 · Las Animas, runway 26, 3,840 × 40 ft, asphalt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
25
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
2,399 total · 100 in this make and model · 2,350 as pilot in command · 200 in the last 90 days · 100 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 13 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
90 °F, dew point 55 °F
Altimeter
29.00 inHg
Observed at
PUB, 75 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N4907X · 1

Matched to the same aircraft by N-number and date.