NTSB CAROL · Event
Event FTW98LA014
Registry · N921G
FAA Aircraft Registry record.
Make / Model
BURKHART GROB FLUGZEUGBAU G103 TWIN ASTIR
Year of manufacture
1982 · 15 years old at event
Engine
NONE NONE
Seats / Engines
2 seats · 1 engine
Last airworthiness date
19830210
ADS-B equipped
Yes — Mode-S ACC277
Registrant of record
THERMALATOR SOARING ASSOCIATION LLC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
the pilot's improper flare and improper recovery from a bounced landing. A factor relating to the accident was: the gusty wind condition.
Factual narrative
On October 3, 1997, at 1500 central daylight time, a Grob 103 glider, N921G, was substantially damaged while landing near Caddo Mills, Texas. The commercial pilot, sole occupant of the glider, was not injured. The glider, owned by a private individual, was being operated by Southwest Soaring Inc., of Caddo Mills, Texas, under Title 14 CFR Part 91, at the time of the accident. Visual meteorological conditions prevailed for the personal flight for which a flight plan was not filed. The local flight originated from the Caddo Mills Municipal Airport at approximately 1330. Witnesses at the Caddo Mills Municipal Airport observed the glider land hard and porpoise 3 times while landing on runway 31. After the landing, the pilot was reported to have examined the glider for damage before signaling for the tow plane pilot to come over and proceed to be hooked and towed for a second flight. In the enclosed NTSB Form 6120.1/2, the commercial pilot stated that both of his flights appeared normal in all respects with the exception that he used a higher than normal final approach speed to compensate for the prevailing gusty winds. The private pilot reported that at the time of the mishap, the winds were from the north at 10 knots with occasional gusts to 15 knots. While performing a preflight inspection, a student pilot and his flight instructor, who were scheduled to fly the glider after the commercial pilot's second flight, discovered that the glider was damaged. Examination of the glider by the operator, the FAA inspector and 2 additional maintenance technicians revealed that the damage to the glider included structural damage to the tail wheel, the rudder assembly, the lower portion of the empennage, and the main landing gear well. The tow plane pilot, who also witnessed the gliders' first landing, submitted a statement of his observations. According to the tow pilot, "the first touchdown was hard enough to bounce the Grob back airborne sharply and a second touchdown followed that again bounced the [Grob] 103 back airborne. At the third touchdown the [Grob] 103 stayed on the runway." The commercial pilot stated in the enclosed Pilot/Operator Report, that he considered the damage to the glider to be minor. The commercial pilot had accumulated a total of 93 hours in gliders, of which 16 were in the Grob 103 glider. The documentation submitted by the operator to substantiate the damage incurred by the glider is attached to this report. Witnesses at the airport observed the glider land hard and porpoise 3 times while landing on runway 31. After the landing, the pilot was reported to have examined the glider for damage before proceeding to be hooked and towed for a second flight. While performing a preflight inspection, a student pilot and his flight instructor, who were scheduled to fly the glider after the private pilot, discovered that the glider was damaged. Damage to the glider included structural damage to the tail wheel, the rudder assembly, the lower portion of the empennage, and the main landing gear well. The private pilot reported that at the time of the mishap, the winds were from the north at 10 knots with occasional gusts to 15 knots. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1997_FTW98LA014.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 (maintenance). 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 2026 · Journal article (IJAAA)
From Reactive to Predictive: A hybrid Trust-Mediated Adoption Framework for Data-Driven Maintenance in Distributed-Authority Aviation Environments
Modern aviation maintenance operates within increasingly data-intensive technological environments, yet the operational integration of predictive maintenance into routine decision-making remains incon…
- Semantic Scholar 2025 · Article (Applied Sciences)
Decision-Making Framework for Aviation Safety in Predictive Maintenance Strategies
The implementation of predictive maintenance (PM) in aviation presents unique challenges due to strict safety requirements, complex operational environments, and regulatory constraints.
- Embry-Riddle Scholarly Commons 2024 · Journal article (JAAER)
Low-Resource Automatic Speech Recognition Domain Adaptation – A Case-Study in Aviation Maintenance
With timeliness and efficiency being critical in the aviation maintenance industry, the need has been growing for smart technological solutions that optimize and streamline the different underlying ta…
- Embry-Riddle Scholarly Commons 2024 · Journal article (JAAER)
A New Trajectory in UAV Safety: Leveraging Reinforcement Learning for Distance Maintenance Under Wind Variations
In the field of aviation, safety is a critical cornerstone, and the operation of Unmanned Aerial Vehicle (UAV) systems is deeply connected with this principle.
- Embry-Riddle Scholarly Commons 2024 · Journal article (IJAAA)
Just Culture in Aviation: A Metaphorical Study on Aircraft Maintenance Students
Just Culture, a sub-dimension of safety culture, has been a prominent and debated topic in aviation safety in recent years.
- Embry-Riddle Scholarly Commons 2024 · Journal article (IJAAA)
Performance PRISM: A Comprehensive Framework For Performance Measurement In Aircraft Maintenance
Aircraft maintenance is governed by rigorous safety requirements and high operational complexity, demanding robust performance measurement frameworks to ensure optimal maintenance practices.
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