NTSB CAROL · Event
Event WPR16LA063
Aircraft involved
Probable cause & findings
The flight instructor’s failure to maintain awareness while parked on the ramp with the engine operating, which resulted in impact with another parked airplane.
Factual narrative
On February 3, 2016, about 1130 Pacific standard time, a Cessna 172S, N499DR, impacted a parked, occupied Cessna 172S, N1955L at the Gillespie Field Airport (SEE), San Diego/El Cajon, California. Both airplanes were occupied with one certified flight instructor (CFI) and one student pilot; no one was injured. N499DR sustained minor damage, and N1955L sustained substantial damage to the fuselage structure and rudder. Both airplanes were registered to Sorbi Aviation Inc., and were operated by the California Flight Academy as 14 Code of Federal Regulations Part 91 instructional flights. Visual meteorological conditions prevailed at the time of the accident and neither airplane had filed a flight plan. Both airplanes were on the California Flight Academy parking ramp preparing for their local flights. The CFI from N499DR reported that this was the student pilot's first flight lesson. After completing a thorough preflight they hand towed the airplane out from its north facing parking spot and turned it towards the east. They started the engine and it idled between 800-1000 RPM. While listening to the airport's automatic terminal information service (ATIS) the airplane started to move with a right turning tendency. The CFI stated he did not notice it at first, but when he did, he stepped on the brakes. The airplane increased its right turn and struck a parked, occupied, airplane (N1955L). In a later conversation, the CFI reported that when he attempted to stop the airplane he noticed that the right rudder pedal was slightly more forward than the left, but not by much. In a written statement, the student pilot from N499DR reported that when the CFI was listening to the radio, the airplane started moving and turning into another airplane. He stated "Hey you! Airplane is moving!" and he touched the CFI. The CFI looked at him, then back at the radio, and he "did not do anything;" he appeared to be distracted. The airplane continued its turn and impacted N1955L. The CFI of N1955L reported that the student pilot and he were preparing for their flight with the engine off, when they suddenly felt a jolt and heard the sound of metal contacting metal. They turned around and observed that N499DR had struck the aft fuselage of their airplane. During a postaccident examination of N499DR's brake system by a Federal Aviation Administration airworthiness inspector, there were no visual defects or leaks. He manipulated the brakes both dependently and independently with no anomalies noted. The flight instructor and student pilot were parked with the airplane's engine running when the airplane began to move forward and to the right. The instructor stated that upon noticing the forward movement, he applied the brakes. He reported that the right rudder/brake pedal was positioned further forward than the left pedal, and upon application of brakes, the right turn increased before the airplane impacted another occupied airplane parked on the ramp, resulting in substantial damage to both. The student pilot reported that he noticed the airplane's movement and tried to alert the instructor; however, the instructor appeared to be distracted. Postaccident examination of the brake system revealed no anomalies that would have precluded normal operation. It is likely that the airplane's nose wheel was initially displaced to the right, which resulted in the airplane's right turn. 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 Personnel issues-Psychological-Attention/monitoring-Task monitoring/vigilance-Instructor/check pilot - C
- F Personnel issues-Action/decision-Action-Delayed action-Instructor/check pilot - F
- C Personnel issues-Psychological-Attention/monitoring-Task monitoring/vigilance-Pilot of other aircraft - C
- F Personnel issues-Action/decision-Action-Delayed action-Pilot of other aircraft - F
Verbatim from NTSB's published report. Source file
NTSB_2016_WPR16LA063.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 (icing). 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 · Contractor Report (CR)
Icing Physics Studies Using the 3D SIDRM Test Article: 2023 Icing Tests Analysis
In-flight icing is an important safety issue and is a factor that affects aircraft design and performance. Newer regulations are driving a need for improvements in airframe and engine icing simulation…
- arXiv 2025 · arXiv preprint
Multi-Agent Deep Reinforcement Learning for UAV-Assisted 5G Network Slicing: A Comparative Study of MAPPO, MADDPG, and MADQN
The growing demand for robust, scalable wireless networks in the 5G-and-beyond era has led to the deployment of Unmanned Aerial Vehicles (UAVs) as mobile base stations to enhance coverage in dense urb…
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER)
A Mathematical Model on the Temporal Dynamics of Aviation Competitive Pricing
This study investigates the competitive dynamics of airport pricing using U.S. airport data to validate the findings. It employs linear and nonlinear ordinary differential equation models to analyze t…
- NASA NTRS 2025 · Presentation
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…
- NASA NTRS 2024 · Presentation
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.
Browse the full corpus — academia portal ↗