NTSB CAROL · Event
Event IAD98LA036
Registry · N937CA
FAA Aircraft Registry record.
Make / Model
SOCATA TBM 700
Year of manufacture
2017
Engine
P&W PT6A66D (850 hp)
Seats / Engines
7 seats · 1 engine
Last airworthiness date
20241209
ADS-B equipped
Yes — Mode-S ACFFDD
Registrant of record
AJMLT AVIATION INC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The driver's operation of a ground vehicle at night with an inoperative windshield wiper and an obscured windscreen against company regulations which resulted in a collision with a parked aircraft.
Factual narrative
On March 9, 1998, at 2345 eastern standard time, a Canadair CL-600-2B19, N937CA, owned and operated by Comair Inc., was substantially damaged when it was struck by a baggage tug while standing at the Cincinnati/Northern Kentucky Airport (CVG), Covington, Kentucky. The 2 flight crewmembers and 13 passengers were not injured. A cabin attendant on the airplane and two tug occupants received minor injuries. Visual meteorological conditions prevailed for the scheduled passenger flight that originated at CVG, approximately 2330. An instrument flight rules flight plan was filed for the flight conducted under 14 CFR Part 121. The airplane was standing second in line to be de-iced with position and anti-collision lights illuminated. In a written statement, the Captain said: "We came to a stop, and after approximately 2 minutes...felt a strong jolt and the nose of the aircraft was pushed sideways about 8 feet. I looked out and could see a baggage tug impaled on our left wing tip." In a written statement, the tug driver, who was employed by Comair Inc., said he completed two trips past the de-ice pad prior to the collision. Each time the tug was sprayed with de-ice solution (glycol), obscuring the windshield. When the driver attempted to clear his view with the windshield wiper after the first trip, the wiper broke off. He said, "I couldn't see anything because of the glycol...I was on the ramp road. I couldn't see out the tug [and] never seen the aircraft. I ran into the wing." Examination of the tug by airport police and company mechanics revealed the wiper was no longer installed. The lights and brakes were operational. According to the Comair Customer Services Training Manual Ramp Safety Rules: "SAFETY IS ALWAYS #1 (Never allow yourself or others to make you take short cuts)...A six foot clearance must be maintained between ground equipment and aircraft at all times. A 10 foot clearance must be maintained during inclement weather (snow, rain, ice, etc.). If you have any doubt, stop!...Never operate ground service equipment that is not functioning properly or in need of repair. Immediately report any vehicle in this condition to a supervisor so that corrective action can be taken." Weather reported at the time of the accident was measured ceiling 2,300 overcast with snow. Winds were from 310 degrees at 17 knots gusting to 22 knots. The airplane was standing second in line to be de-iced with position and anti-collision lights illuminated, when it was struck from behind by a baggage tug. The tug impacted the trailing edge of the left wing in the vicinity of the left wing tip. The tug driver said he completed two trips past the de-ice pad prior to the collision. Each time the tug was sprayed with de-ice solution (glycol), obscuring the windshield. When the driver attempted to clear his view with the windshield wiper after the first trip, the wiper broke off. He said, 'I couldn't see anything because of the glycol...I was on the ramp road. I couldn't see out the tug [and] never seen the aircraft. I ran into the wing.' Examination of the tug by airport police and company mechanics revealed the wiper was no longer installed. The lights and brakes were operational. According to a company training manual, 'Never operate ground service equipment that is not functioning properly or in need of repair. Immediately report any vehicle in this condition to a supervisor so that corrective action can be taken.' Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1998_IAD98LA036.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 (stall). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- NASA NTRS 2026 · Conference Paper
Computational Analysis of Steady State Aerodynamics of Transonic Truss-Braced Wing Configuration in Deep Stall
This study presents a computational investigation of steady state aerodynamics of the Subsonic Ultra-Green Aircraft Research (SUGAR) Transonic Truss-Braced Wing (TTBW) configuration over a wide range …
- arXiv 2023 · arXiv preprint
Automating Bird Diverter Installation through Multi-Aerial Robots and Signal Temporal Logic Specifications
This paper tackles the task assignment and trajectory generation problem for bird diverter installation using a fleet of multi-rotors.
- arXiv 2023 · arXiv preprint
Variation of Critical Crystallization Pressure for the Formation of Square Ice in Graphene Nanocapillaries
Two-dimensional square ice in graphene nanocapillaries at room temperature is a fascinating phenomenon and has been confirmed experimentally.
- arXiv 2023 · arXiv preprint
Polycrystallinity enhances stress build-up around ice
Damage caused by freezing wet, porous materials is a widespread problem, but is hard to predict or control. Here, we show that polycrystallinity makes a great difference to the stress build-up process…
- arXiv 2022 · arXiv preprint
Enhanced Prediction of Three-dimensional Finite Iced Wing Separated Flow Near Stall
Icing on three-dimensional wings causes severe flow separation near stall. Standard improved delayed detached eddy simulation (IDDES) is unable to correctly predict the separating reattaching flow due…
- Embry-Riddle Scholarly Commons 2021 · Journal article (JAAER)
Analysis on the Negative Emotional, Physiological, and Cognitive Responses Elicited from of the Activation of a Stall Alarm
Failing to identify an aerodynamic stall can lead to the inability of an aircraft to sustain flight. To warn pilots of an impending or fully-developed stall, many aircraft have safety devices installe…
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