WPR16LA092
2016-04-13 · Death Valley, California, United States · None · 1 aircraft · Status: Completed
Airport L06
Current FAA registration · N21SG
- Make / Model
- CESSNA 421C
- Year of manufacture
- 1976 · 40 years old at event
- Engine
- CONT MOTOR GTSIO-520 SER (435 hp)
- Seats / Engines
- 8 seats · 2 engines
- Last airworthiness date
- 19840418
- ADS-B equipped
- Yes — Mode-S A1B8C0
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
A runway overrun for reasons that could not be determined based on the available information.
Factual narrative
On April 13, 2016, about 1105 Pacific daylight time, a Cessna 421C airplane, N21SG, was substantially damaged during a runway excursion while landing at Furnace Creek Airport (L06), Death Valley National Park, California. The airline transport pilot and two passengers were not injured. The airplane was privately owned and was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. Visual meteorological conditions prevailed, and no flight plan was filed for the flight, which originated from St. George Regional Airport (SGU), St. George, Utah, about 0945. The pilot stated that the flight was uneventful and that he entered the airport traffic pattern to land on runway 33 at L06. He stated that the airplane touched down within the first 500 ft of runway, and that upon application of brakes, he found the right brake "very soft" and "totally ineffective." The airplane departed the end of the 3,065-foot-long runway and the nose landing gear collapsed, resulting in substantial damage to the fuselage. The airplane was not examined following the accident and was subsequently ferried from L06 to another airport for repair. No information was made available regarding the right brake, and the reason for the malfunction during landing could not be determined. The pilot did not submit the National Transportation Safety Board Pilot/Operator Aircraft Accident/Incident report form 6120.1. The airline transport pilot was landing the airplane at the end of a cross-country flight. He stated that the airplane touched down within the first 500 ft of the 3,065-ft-long runway and that, when he applied the brakes, the right brake felt "very soft" and was "totally ineffective." The airplane departed the end of the runway, and the nose landing gear collapsed, which resulted in substantial damage to the fuselage. The airplane was not examined following the accident and was subsequently ferried to another airport for repair. No information was made available regarding the right brake, and the reason for the brake malfunction during landing could not be determined. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
FAA avdata. C = Cause, F = Factor.
- C Not determined-Not determined-(general)-(general)-Unknown/Not determined - C
Verbatim from NTSB's published report. Source file
NTSB_2016_WPR16LA092.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.
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Related research
Matched on aircraft type or causal vocabulary (runway excursion). All research papers
- SKYbrary (Eurocontrol) 2024 · SKYbrary article Runway Excursion — SKYbrary Knowledge Base
SKYbrary runway excursion review — RE-OE (overruns) + RE-LO (lateral). Risk drivers: long landing, high approach speed, contaminated surface, tailwind, mis-set autobrakes.
- NTSB Aircraft Accident Reports 2019 · Accident report Embraer ERJ 175 Runway Excursion at Charlotte Douglas
Republic Airline ERJ-175 runway excursion CLT, January 2018. Examines a low-energy runway excursion involving misuse of autobrakes + thrust reverser response after a high-crosswind landing on a contam…
- NASA NTRS 2025 · Presentation Uncovering Resilient Behavior in the Aviation Safety Reporting System Using Large Language Models
Resiliency is present in everyday life, both in system design and exhibited by the operators that function within these systems.
- NASA NTRS 2025 · Conference Paper Uncovering Resilient Behavior in the Aviation Safety Reporting System Using Large Language Models
Resiliency is present in everyday life, both in system design and exhibited by the operators that function within these systems.
- Flight Safety Foundation 2024 · FSF / AeroSafety World Runway Safety Initiative Final Report (RSI)
Foundation Runway Safety Initiative final report — comprehensive analysis of runway excursion + incursion risk drivers worldwide.
- Semantic Scholar 2020 · Article Towards online prediction of safety-critical landing metrics in aviation using supervised machine learning
Abstract In recent years, due to the increased availability of data and improvements in computing power, application of machine learning techniques to various aviation safety problems for identifying,…