GAA18CA239
2018-04-27 · Vacaville, California, United States · None · 1 aircraft · Status: Completed
Airport VCB
Current FAA registration · N54V
- Make / Model
- BEECH 76
- Year of manufacture
- 1980 · 38 years old at event
- Engine
- LYCOMING O&VO-360 SER (180 hp)
- Seats / Engines
- 4 seats · 2 engines
- Last airworthiness date
- 19800108
- ADS-B equipped
- Yes — Mode-S A6D76E
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot under instruction’s failure to extend the landing gear and the flight instructor’s inadequate supervision and failure to ensure that the landing gear was extended.
Factual narrative
The flight instructor was giving instruction in a multi-engine, retractable landing gear-equipped airplane. On the downwind leg in the pattern he and asked the student to perform a simulated single-engine emergency landing with the left engine shutdown. It was the student's first training flight in a multi-engine airplane, and he asked a series of questions to the flight instructor during the procedure. The instructor reported that they both became distracted and forgot to extend the landing gear. The airplane landed with the landing gear retracted and came to rest on the runway. The airplane sustained substantial damage to the wing-spar and longerons. Per the National Transportation Safety Board Pilot Aircraft Accident Report, in the Recommendation section the instructor reported that the accident could have been prevented by implementing a sterile cockpit during critical phases of flight, per the flight school's operations manual. The pilot reported that there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation. The flight instructor was giving instruction in the multiengine, retractable-landing gear-equipped airplane. On the downwind leg in the pattern, he asked the pilot under instruction to perform a simulated single-engine emergency landing with the left engine shutdown. It was the pilot under instruction's first training flight in a multiengine airplane, and he asked a series of questions of the flight instructor during the procedure. The instructor reported that they both became distracted and forgot to extend the landing gear. The airplane landed with the landing gear retracted and came to rest on the runway. The airplane sustained substantial damage to the wingspar and longerons. The flight instructor reported that there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
FAA avdata. C = Cause, F = Factor.
- C Personnel issues-Action/decision-Action-Forgotten action/omission-Student/instructed pilot - C
- C Aircraft-Aircraft systems-Landing gear system-Gear extension and retract sys-Not used/operated - C
- C Personnel issues-Psychological-Attention/monitoring-Monitoring other person-Instructor/check pilot - C
Verbatim from NTSB's published report. Source file
NTSB_2018_GAA18CA239.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
Search this event elsewhere
External sources are reported, not agency: signal that something happened, not fact about what happened.
- TallyAero Live Wire Aviation press
- NTSB CAROL Agency ↗
- NTSB Docket Agency ↗
- Aviation Safety Network Aviation press ↗
- Kathryn's Report Aviation press ↗
- Aviation Herald Aviation press ↗
- AVweb Aviation press ↗
- Pilots of America Community ↗
- Reddit /r/flying Community ↗
- FlightAware Aviation press ↗
- AOPA accident database Aviation press ↗
- Google News News ↗
- DuckDuckGo News ↗
Related research
Matched on aircraft type. All research papers
- NTSB Aircraft Accident Reports 2018 · Accident report Atlas Air Flight 3591 Boeing 767 Loss of Control (preliminary)
Atlas Air 3591 / Boeing 767-300 / Trinity Bay TX (Feb 23 2019) — preliminary. Preliminary investigation findings; superseded by the AAR-21/01 final report.
- NTSB Aircraft Accident Reports 2021 · Accident report Crash of Atlas Air Flight 3591, Boeing 767-300 (N1217A)
Atlas Air 3591 crashed into Trinity Bay, Texas, February 23, 2019. Investigation of the in-flight loss-of-control crash of Atlas Air 3591 into Trinity Bay, Texas.
- arXiv 2026 · arXiv preprint Quantifying the Reality Gap for RL-Based UAV Placement at mmWave and Sub-THz
Reinforcement learning (RL) policies for unmanned aerial vehicle (UAV) placement in mmWave and sub-terahertz networks are typically trained on simplified analytical channels.
- arXiv 2026 · arXiv preprint Physics-Aware End-to-End Deep Reinforcement Learning for Quadcopter Control with Actuator Dynamics
Unmanned aerial vehicles (UAVs), particularly quadcopters, present unique challenges for autonomous control due to their underactuated dynamics: only four available control inputs must govern six degr…
- arXiv 2026 · arXiv preprint Multi-Domain Physics-Based MDO of Multirotor UAVs: A Deterministic Framework for Discrete COTS Sizing
Multirotor Unmanned Aerial Vehicle (UAV) design is governed by a tightly coupled system of non-linear equations spanning structural mechanics, electrochemistry, aerodynamics, and kinematics.
- arXiv 2026 · arXiv preprint eVTOL Aircraft Energy Overhead Estimation under Conflict Resolution in High-Density Airspaces
Electric vertical takeoff and landing (eVTOL) aircraft operating in high-density urban airspace must maintain safe separation through tactical conflict resolution, yet the energy cost of such maneuver…