NTSB CAROL · Event
Event FTW93LA131
Aircraft involved
Probable cause & findings
A CORRODED BLEED AIR CHECK VALVE AND SUBSEQUENT FAILURE OT THE RIGHT WING'S FUEL TRANSFER SYSTEM. A FACTOR WAS THE UNFAVORABLE WIND
Factual narrative
On April 16, 1993, at approximately 1715 central daylight time, a Hispano Aviacion HA 200 multiengine turbojet airplane, N554GA, was substantially damaged during landing at Walnut Ridge Regional Airport, Walnut Ridge, Arkansas. Neither the private pilot nor his passenger were injured. Visual meteorological conditions prevailed for the personal flight. The pilot had departed from Grain Valley, Missouri, and was en route to Gadsden, Alabama, when he noted that the airplane's right wing felt heavy, according to his statement to the FAA inspector. Corrective measures did not resolve the problem. He elected to land at Walnut Ridge Regional Airport as a precaution. He stated that during the landing roll he had to use both hands to hold the control stick in the full left position. He also reported that the wind was gusting from 20 up to 35 knots. The right wing tip struck the runway's surface resulting in a loss of control. The airplane veered off the runway followed by the landing gear collapsing, and a post accident fire. Under the direction of the FAA, the fuel system's components were examined and tested. The right wing's bleed air check valve was found corroded with the plunger and spring stuck making it inoperative, according to the FAA. THE AIRPLANE WAS IN CRUISE FLIGHT WHEN THE PILOT NOTED A RIGHT WING HEAVY CONDITION. HE ATTEMPTED TO CORRECT THE CONDITION BY TURNING THE AIR PRESSURE VALVE FROM BOTH TIP TANKS TO THE RIGHT TIP TANK. AFTER 10 TO 15 MINUTES, THE PROBLEM WAS NOT RESOLVED AND A PRECAUTIONARY LANDING WAS MADE. DURING THE LANDING ROLL, THE LATERAL BALANCE LIMITS COULD NOT BE MAINTAINED BY THE PILOT AND THE RIGHT WING TANK STRUCK THE GROUND. THE WIND WAS GUSTING BETWEEN 20 TO 35 KNOTS AT THE TIME, ACCORDING TO THE PILOT. THE AIRPLANE VEERED TO THE RIGHT AS CONTROL WAS LOST. THE LANDING GEAR COLLAPSED BEFORE THE AIRPLANE CAME TO REST. A SMALL FIRE STARTED AFTER THE PILOT AND HIS PASSENGER EXITED THE AIRPLANE. TESTING WAS ACCOMPLISHED ON THE COMPONENTS FOR THE FUEL SYSTEM UNDER THE DIRECTION OF THE FAA. THE RESULTS OF THE TESTS REVEALED AN INOPERATIVE RIGHT WING BLEED AIR CHECK VALVE. IT WAS FOUND CORRODED WITH THE PLUNGER AND SPRING STUCK Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1993_FTW93LA131.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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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.
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER)
A Scoping Review of Aviation Loss of Control Inflight Research
Loss of control – inflight (LOC-I) contributes to aircraft accidents at unacceptably high rates. Significant industry efforts and research have aimed to improve LOC-I prevention, detection, and recove…
- SKYbrary (Eurocontrol) 2024 · SKYbrary article
Loss of Control In-Flight (LOC-I) — SKYbrary Knowledge Base
SKYbrary comprehensive knowledge-base entry on Loss of Control In-Flight — definitions, contributing factors, accident case studies (Air France 447, Colgan 3407), and prevention strategies.
- NTSB Aircraft Accident Reports 2022 · Accident report
Loss of Control on Takeoff in Icing Conditions — Citation 560XL
Cessna Citation 560XL fatal takeoff icing accident, March 2018. Investigation of a Citation 560XL loss-of-control takeoff accident in icing conditions.
- Semantic Scholar 2021 · Article (Aviation)
ANALYSIS OF GENERAL AVIATION FIXED-WING AIRCRAFT ACCIDENTS INVOLVING INFLIGHT LOSS OF CONTROL USING A STATE-BASED APPROACH
Inflight loss of control (LOC-I) is a significant cause of General Aviation (GA) fixed-wing aircraft accidents. The United States National Transportation Safety Board’s database provides a rich source…
- NASA NTRS 2021 · Presentation
Use of Design of Experiments in Determining Neural Network Architectures for Loss of Control Detection
Abstract—We describe empirical methods for selecting a neural network architecture to implement belief state inference on generic commercial transport aircraft.
- NASA NTRS 2021 · Conference Paper
Use of Design of Experiments in Determining Neural Network Architectures for Loss of Control Detection
We describe empirical methods for selecting a neural network architecture to implement belief state inference on generic commercial transport aircraft.
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