NTSB CAROL · Event
Event LAX99LA064
Aircraft involved
Probable cause & findings
The pilot-in-command's failure to maintain directional control. A factor in this accident was the inadvertent ground loop swerve.
Factual narrative
On January 2, 1999, at 1118 hours Pacific standard time, a Piper PA-22-108, N4556Z, nosed over following a loss of control during the flare/touchdown at Hayward, California. The aircraft was destroyed during the impact sequence and postcrash fire. The student pilot was not injured. The flight was being conducted under the provisions of 14 CFR Part 91 and visual meteorological conditions prevailed at the time of the accident. In the pilot's written statement, he reported that he had stayed in the pattern at Hayward to practice touch-and-go landings and completed two with no problems noted. He stated that this was to be his last landing for the day and noted that his approach speed over the fence was normal. He said he was drifting to the right as he began his flare, and the next thing he remembered was the left wing getting ready to touch the ground, as in a left sliding skid or ground loop condition. He applied full throttle to try and fly the airplane so that the wing would not hit the ground. The pilot said the airplane "did not want to fly," so he elected to close the throttle and straighten the airplane out prior to landing. The airplane nosed over upon landing, which resulted in a broken front landing gear. The pilot said he shut off the fuel, mixture, magnetos, and master switch and exited the airplane. The pilot reported that at the time of the accident, ATIS was reporting the winds to be from 070 degrees at 04 knots. The Federal Aviation Administration Aviation (FAA) Safety Inspector told Safety Board investigators that the support structure of the nose gear contacted the output side of the gascolator, causing it to break off the fitting which resulted in unregulated fuel pouring into the engine cowling. The aircraft fuel ignited and the fabric began to catch fire, thus eventually destroying the airplane. An aviation inspector from the FAA interviewed the certified flight instructor (CFI), who had provided training to the student pilot. The CFI stated that in his opinion, the student pilot "possessed excellent flying skills." He further stated that the student pilot had approximately 40 hours of flying time, including 3 to 4 hours of crosswind landings at Palo Alto Airport, an airport known for it's stiff crosswinds. He also said that he felt that the student pilot was "a very cautious and attentive student." The Safety Board did not take custody of the wreckage. The student pilot was completing the last of his touch-and-go landings at a local airport. During the flare he said the airplane began to drift to the right and said he noticed the left wing getting ready to contact the ground, as if in a ground loop condition. The pilot applied full throttle in an attempt to fly away. He stated the airplane did not want to fly so he elected to close the throttle and attempted to straighten out the airplane for landing. The aircraft contacted the ground and subsequently nosed over. The gascolator was compromised during the crash, which allowed unregulated fuel to enter the engine cowling. The postcrash fire ensued which destroyed the airplane. The pilot reported that the weather conditions at the time of the crash as reported on ATIS were winds 070 at 4 knots. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1999_LAX99LA064.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 (loss of control). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER)
A Scoping Review of Aviation Loss of Control Inflight Research
Loss of control – inflight (LOC-I) contributes to aircraft accidents at unacceptably high rates. Significant industry efforts and research have aimed to improve LOC-I prevention, detection, and recove…
- SKYbrary (Eurocontrol) 2024 · SKYbrary article
Loss of Control In-Flight (LOC-I) — SKYbrary Knowledge Base
SKYbrary comprehensive knowledge-base entry on Loss of Control In-Flight — definitions, contributing factors, accident case studies (Air France 447, Colgan 3407), and prevention strategies.
- NTSB Aircraft Accident Reports 2022 · Accident report
Loss of Control on Takeoff in Icing Conditions — Citation 560XL
Cessna Citation 560XL fatal takeoff icing accident, March 2018. Investigation of a Citation 560XL loss-of-control takeoff accident in icing conditions.
- Semantic Scholar 2021 · Article (Aviation)
ANALYSIS OF GENERAL AVIATION FIXED-WING AIRCRAFT ACCIDENTS INVOLVING INFLIGHT LOSS OF CONTROL USING A STATE-BASED APPROACH
Inflight loss of control (LOC-I) is a significant cause of General Aviation (GA) fixed-wing aircraft accidents. The United States National Transportation Safety Board’s database provides a rich source…
- NASA NTRS 2021 · Presentation
Use of Design of Experiments in Determining Neural Network Architectures for Loss of Control Detection
Abstract—We describe empirical methods for selecting a neural network architecture to implement belief state inference on generic commercial transport aircraft.
- NASA NTRS 2021 · Conference Paper
Use of Design of Experiments in Determining Neural Network Architectures for Loss of Control Detection
We describe empirical methods for selecting a neural network architecture to implement belief state inference on generic commercial transport aircraft.
Browse the full corpus — academia portal ↗