NTSB CAROL · Event
Event WPR12CA172
Registry · N4971X
FAA Aircraft Registry record.
Make / Model
RANS S-2R
Year of manufacture
1976 · 36 years old at event
Engine
WRIGHT R-1820 SER (1475 hp)
Seats / Engines
1 seats · 1 engine
Last airworthiness date
19820720
ADS-B equipped
Yes — Mode-S A62CAA
Registrant of record
PRECISION AG AIR LLC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot’s inadequate fuel planning, which resulted in a total loss of engine power due to fuel exhaustion. Contributing to the accident was the pilot’s distraction and subsequent failure to have the airplane refueled.
Factual narrative
The pilot landed after completing an aerial application to a field, and planned on refueling the airplane while the application tank was reloaded. He noted that among other distractions, he was having problems with his global positioning system (GPS), and began discussing it with another pilot. The pilot reported that after takeoff, he realized that he did not have the ground crew refuel the airplane. The destination field was close, so he decided to continue rather than return and fuel the airplane. The fuel gages indicated 1/4 capacity at takeoff, and were bouncing around 1/8 capacity after he completed two passes. The engine subsequently lost power due to fuel exhaustion, and the pilot landed in a flat field, which was wet and soft. During the landing roll, the airplane nosed over, substantially damaging the vertical stabilizer and rudder. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. The pilot landed after completing an aerial application to a field, and planned to refuel the airplane while the application tank was reloaded. He said that among other distractions, he was having problems with his global positioning system, and began discussing it with another pilot. The pilot reported that after takeoff, he realized that he did not have the ground crew refuel the airplane. He said that the destination field was close, so he decided to continue rather than return and refuel the airplane. He indicated that the fuel gauges indicated 1/4 capacity at takeoff and were bouncing around 1/8 capacity after he completed two passes. The engine subsequently lost power due to fuel exhaustion, and the pilot landed in a flat field, which was wet and soft. During the landing roll, the airplane nosed over, substantially damaging the vertical stabilizer and rudder. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).
- C Aircraft-Fluids/misc hardware-Fluids-Fuel-Fluid level - C
- F Personnel issues-Action/decision-Action-Forgotten action/omission-Pilot - F
- — Environmental issues-Physical environment-Terrain-Wet/muddy-Effect on operation
- C Personnel issues-Task performance-Planning/preparation-Fuel planning-Pilot - C
- F Personnel issues-Psychological-Attention/monitoring-Attention-Pilot - F
Verbatim from NTSB's published report. Source file
NTSB_2012_WPR12CA172.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
Beyond the agency record
Search this event elsewhere.
Pre-filled searches into the sources where news + community discussion of aviation events lives. External sources are reported, not agency. Treat them as signal that something happened, not as fact about what happened.
Entity-clustered aviation events in the press — last 24 hr + 30-day archive.
Official agency record + docket.
Investigative docket: factual reports, photos, transcripts.
Long-running aviation incident database (Flight Safety Foundation).
Community NTSB synthesis blog — often has photos and witness reports.
Gold-standard aviation incident blog.
Aviation industry news search.
GA pilot forum — informed but rumor-prone.
GA pilot subreddit search.
Tail-number page — flight history (free tier limited).
AOPA Air Safety Institute search.
Mainstream press coverage. Recent events only.
Privacy-preserving news search.
External links open in a new tab. We don't ingest their content; we deep-link search queries.
Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (fuel exhaustion). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- AOPA Air Safety Institute 2023 · Safety advisor
Safety Advisor: Fuel Awareness
AOPA Air Safety Institute safety advisor on preventing fuel-exhaustion and fuel-starvation accidents in general aviation. Covers pre-flight fuel planning, reserve requirements (14 CFR 91.151, 91.167),…
- NASA NTRS 2019 · Abstract
U.S. Civil Rotorcraft Accidents, 1963 through 1997
The U.S. National Transportation Safety Board (NTSB) has recorded 8,436 rotorcraft accidents during the period mid - 1963 through the end of 1997.
- NASA NTRS 2019 · Contractor Report (CR)
A study of carburetor/induction system icing in general aviation accidents
An assessment of the frequency and severity of carburetor/induction icing in general-aviation accidents was performed. The available literature and accident data from the National Transportation Safet…
- NASA NTRS 2018 · Other
Parachuting to Safety
NASA's Langley Research Center awarded Ballistic Recovery Systems, Inc., three Small Business Innovation Research (SBIR) contracts to research and develop a new, low cost, lightweight recovery system …
Browse the full corpus — academia portal ↗