NTSB CAROL · Event
Event FTW97LA232
Aircraft involved
Probable cause & findings
the pilot's inadequate preflight, subsequent fuel starvation, and failure of the pilot to reposition the fuel selector to another tank (perform emergency procedure) after the loss of engine power, which resulted in a forced landing and subseqent nose-over. Factors relating to the accident were: false fuel quantity indication, and the lack of suitable terrain for an emergency landing.
Factual narrative
On June 23,1997, approximately 0805 central daylight time, a Callair A-9B agricultural airplane, N7684V, was substantially damaged during a forced landing following a total power loss near El Indio, Texas. The commercial pilot, sole occupant in the airplane, was not injured. The airplane was owned/operated by a private individual under Title 14 CFR Part 137. Visual meteorological conditions prevailed for the aerial application flight which had originated from a private airstrip approximately 5 minutes before the accident. No flight plan had been filed for the flight. According to the pilot, he was working on a boll weevil eradication contract. He stated that he had been servicing the airplane (with fuel, oil, and applicant) at the end of each day. He reported that the day before the accident he was distracted from his servicing process by the arrival of a customer and the news of a family problem. The pilot reported that the next morning, while doing the preflight of the airplane, "I checked the sumps but did not remove the fuel caps to visually check the fuel [quantity]." The pilot reported that he departed for the first flight of the day with the fuel selector on the right fuel tank; this was the fuel tank which was not serviced the day before. The pilot further reported that the right fuel gage indicated "full." While making his first application swath, the engine "quit." The pilot "saw the fuel pressure light come on and he turned on the boost pump"; he "delayed switching fuel tanks because he thought he had full tanks on both sides and that there was some other problem." The pilot performed a forced landing to a cotton field. He stated that "I got down as smooth and slow as I could but the wheels got down into the mud and it flipped over." The airplane came to rest tail first in the inverted position. The pilot was working on a boll weevil eradication contract and was in the habit of servicing the airplane (with fuel, oil, and applicant) at the end of each day. He reported that the day before the accident, he was distracted from his servicing process by the arrival of a customer and the news of a family problem. The pilot reported that the next morning, while preflighting the airplane, 'I checked the sumps but did not remove the fuel caps to visually check the fuel [quantity].' He departed for the first flight of the day with the fuel selector positioned to a nonserviced tank; its fuel quantity gage indicated that it was 'full.' While flying the first application swath, the engine lost power. The pilot 'saw the fuel pressure light come on and he turned on the boost pump, but he delayed switching fuel tanks because he thought he had full tanks on both sides and there was some other problem.' The pilot performed a forced landing to a muddy cotton field, and the airplane came to rest inverted. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1997_FTW97LA232.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (icing, fuel starvation). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
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- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER)
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NASA Icing Update – March 2025
This NASA Icing Update was prepared for presentation to the SAE International AC-9C Inflight Icing Technology Committee. This update includes the following topics: planned Rotational Icing Scaling tes…
- arXiv 2024 · arXiv preprint
An energy-stable phase-field model for droplet icing simulations
A phase-field model for three-phase flows is established by combining the Navier-Stokes (NS) and the energy equations, with the Allen-Cahn (AC) and Cahn-Hilliard (CH) equations and is demonstrated ana…
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NASA Icing Update – Oct 2024
This presentation provides a status update on select NASA icing research activities for the SAE AC-9C Icing Technical Committee Meeting on Oct 21, 2024.
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