WPR10IA256
2010-05-23 · Ontario, California, United States · None · 1 aircraft · Status: Completed
Airport ONT
Current FAA registration · N925SW
- Make / Model
- BOMBARDIER INC CL-600-2B19
- Year of manufacture
- 2002 · 8 years old at event
- Engine
- GE CF34 SERIES
- Seats / Engines
- 55 seats · 2 engines
- Last airworthiness date
- 20020926
- ADS-B equipped
- Yes — Mode-S ACD262
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
Failure of the airplane’s nose landing gear to extend for undetermined reasons.
Factual narrative
On May 23, 2010, about 1020 Pacific daylight time (PDT), Skywest Airlines flight 6467, a Bombardier CRJ, CL-600-2B19, N925SW, made an emergency landing with the nose gear in the retracted position at Ontario International Airport (ONT), Ontario, California. Skywest Airlines, Inc., was operating the airplane as a scheduled domestic passenger flight under the provisions of 14 Code of Federal Regulations (CFR) Part 121. The certificated airline transport pilot captain, commercial pilot first officer, flight attendant, and 24 passengers were not injured. The flight departed San Francisco International Airport (SFO), San Francisco, California, about 0815 as a non-stop to Ontario. Visual meteorological (VMC) conditions prevailed, and an instrument flight rules (IFR) flight plan had been filed. The crew reported that the flight was uneventful until they were on final approach for landing at ONT. The landing gear selector was moved to the down position. The main landing gear extended and locked into place; however, the nose landing gear remained retracted. The crew observed an unsafe nose landing gear indication. The crew aborted the landing approach, and advised air traffic control (ATC) of the emergency. The crew attempted to correct the landing gear malfunction by following the emergency procedures utilizing the Quick Reference Handbook (QRH), but was unsuccessful. The crew conducted a low-level flyby to have tower and ground personnel evaluate the condition of the nose landing gear. The landing gear doors were open, but the nose landing gear was still retracted in the landing gear compartment. Due to the unsuccessful attempt to lower the nose landing gear, the crew decided to make an emergency landing. After the main landing gear touched down, the captain held the nose off the ground as long as possible. The nose landing gear doors touched down on the runway centerline, and the airplane slid about 2,000 feet. The passengers and crew exited the airplane using the main cabin door. The airplane's Cockpit Voice Recorder (CVR), and the Flight Data Recorder (FDR) were removed and shipped to the NTSB CVR/FDR lab in Washington, DC, for download and read out. A factual report for the CVR and the FDR are attached to the docket. After the airplane was jacked up using airbags and the nose gear extended, an examination of the damage to the belly of the airplane was determined to be minor. The airplane was towed to a fixed base operator-(FBO) to prepare the airplane for a ferry flight to one of the operator’s maintenance facilities. On May 26, 2010, the airplane was flown from ONT to Fresno, California, on a ferry permit. On May 27 and 28, 2010, investigators examined the airplane's landing gear systems. The nose landing gear was removed from the airframe and shipped to the manufacturer for further examination. A copy of the inspection with the observations and findings are attached to the docket. Investigators convened at the Messier-Dowty, the manufacturer of the nose landing gear on August 1, 2010. An examination of the landing gear was accomplished and a copy of the report is attached to the docket. Hydraulic samples were taken from the (3) nose gear landing servos and submitted for analysis. All results appeared normal, except for the sample from the Uplock Actuator servo, which revealed “PARTICLES APPEAR ABNORMAL AT NAS CLASS 12, NAS CLASS 9 OR BETTER IS RECOMMENDED” All other tests appear normal. After all examinations, the investigation found no abnormalities that would have precluded normal operations of the landing gear system. After the pilots extended the airplane’s landing gear in preparation for landing, they observed an unsafe nose landing gear indication and performed a go-around to try to correct the situation. The pilots followed the emergency procedures in the operator’s Quick Reference Handbook but were unable to lower the nose landing gear. The pilots then performed a low-level flyby so air traffic control tower (ATCT) and ground personnel could evaluate the condition of the nose landing gear. When ATCT and ground personnel confirmed that the landing gear doors were open and the nose landing gear remained retracted, the pilots decided to make an emergency landing with the nose landing gear retracted. After the main landing gear touched down, the captain held the nose off the ground as long as possible, in accordance with company procedures. The airplane slid about 2,000 feet after the nose settled to the runway before coming to a stop. During the recovery process, the nose landing gear was extended. Postaccident examination revealed no abnormalities that would have precluded normal operation of the nose landing gear system. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
FAA avdata. C = Cause, F = Factor.
- C Aircraft-Aircraft systems-Landing gear system-Nose/tail landing gear-Malfunction - C
- C Not determined-Not determined-(general)-(general)-Unknown/Not determined - C
Verbatim from NTSB's published report. Source file
NTSB_2010_WPR10IA256.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 or causal vocabulary (go-around, maintenance). All research papers
- 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 2026 · Article (Reliability Engineering & System Safety) Understanding human error in military aviation maintenance: The role of Performance shaping factors, cognitive workload and error orientation
- NASA NTRS 2025 · Conference Paper A Training Study to Improve Monitoring During A Go-Around
As part of an FAA program to improve go-around (GA) safety, we were asked to determine if we could improve the performance of the Pilot Monitoring (PM) during a GA maneuver.
- 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.
- Semantic Scholar 2024 · Article (Defence Science Journal) Modelling of Human Factors in Aviation Maintenance Using HFACS ME Human Factors Analysis and Classification System Maintenance Extension and Bayesian Network
Aircraft maintenance is a complex task involving a skilled human workforce, spare parts, and various other resources. Human factors are an inherent element of the human workforce.
- Flight Safety Foundation 2024 · FSF / AeroSafety World Go-Around Safety Forum Findings
Foundation Go-Around Safety Forum technical findings — examines why pilots fail to execute go-arounds when criteria are met (stabilized approach gate not met, energy state out of envelope, traffic con…