NTSB CAROL · Event
Event ANC99LA098
Registry · N79169
FAA Aircraft Registry record.
Make / Model
CESSNA 172K
Year of manufacture
1969 · 30 years old at event
Engine
LYCOMING 0-320 SERIES (180 hp)
Seats / Engines
4 seats · 1 engine
Last airworthiness date
19690212
ADS-B equipped
Yes — Mode-S AABF08
Registrant of record
LAPP THOMAS A
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot's inadequate compensation for the gusty crosswind conditions during takeoff. Factors associated with the accident were a crosswind, and wind gusts.
Factual narrative
On July 28, 1999, about 1800 Alaska daylight time, a wheel equipped Cessna 172 airplane, N79169, sustained substantial damage during takeoff from the Sheldon Point Airport, Sheldon Point, Alaska. The airplane was being operated by Grant Aviation of Bethel, Alaska, as a visual flight rules (VFR) positioning flight under Title 14, CFR Part 91, when the accident occurred. The solo airline transport pilot was not injured. Visual meteorological conditions prevailed, and VFR company flight following procedures were in effect. The flight originated at the Emmonak Airport, Emmonak, Alaska, and the intended destination was Emmonak. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge on July 29, the pilot reported he was attempting to depart on runway 20. He said there was a gusty left crosswind, of about 18 knots and 90 degrees to the runway. Shortly after beginning the takeoff roll, he said a wind gust lifted the left wing, and pushed the airplane to the right, and off the runway. He said he reduced power and attempted to keep the airplane on the runway, but the airplane went off the runway, down an embankment, and nosed over. The pilot said there was no preaccident mechanical problems with the airplane. The airplane received substantial damage to the right wing and vertical stabilizer. The solo airline transport pilot reported he was attempting to takeoff in a gusty, 90 degree left crosswind. He estimated the wind velocity as 18 knots, gusting to 23 knots. During the takeoff roll, he said a gust of wind lifted the left wing, and forced the airplane to the right, off the runway, and down an embankment, where it nosed over. The pilot said there were no preaccident mechanical problems with the airplane. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1999_ANC99LA098.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type. 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 2019 · Conference Paper
Crash Testing and Simulation of a Cessna 172 Aircraft: Pitch Down Impact Onto Soft Soil
During the summer of 2015, NASA Langley Research Center conducted three full-scale crash tests of Cessna 172 (C-172) aircraft at the NASA Langley Landing and Impact Research (LandIR) Facility.
- NASA NTRS 2019 · Technical Memorandum (TM)
Simulating the Impact Response of Three Full-Scale Crash Tests of Cessna 172 Aircraft
During the summer of 2015, a series of three full-scale crash tests were performed at the Landing and Impact Research Facility located at NASA Langley Research Center of Cessna 172 aircraft.
- Embry-Riddle Scholarly Commons 2023 · Conference paper
Validation of Training Satisfaction Survey
The Training Satisfaction Survey (TSS) was developed as part of a larger project to examine the features of Virtual Reality software and supporting devices as a training program on visual illusions an…
- Semantic Scholar 2021 · Article (Data in Brief)
Cockpit voice recorder transcript data: Capturing safety voice and safety listening during historic aviation accidents
Cockpit Voice Recorder (CVR) transcripts capture audio data within cockpit environments. This aids the investigation of causal factors contributing to aviation accidents by revealing communication and…
- Semantic Scholar 2021 · Article (Safety Science)
Safety voice and safety listening during aviation accidents: Cockpit voice recordings reveal that speaking-up to power is not enough
Abstract Safety voice is theorised as an important factor for mitigating accidents, but behavioural research during actual hazards has been scant.
- Embry-Riddle Scholarly Commons 2021 · Journal article (JAAER)
Can Backward-Chained, Ab-Initio Pilot Training Decrease Time to First Solo?
Flight simulation has made progressively significant inroads into pilot training at all levels of a pilot’s career – typically starting with training for the Instrument rating in light aircraft and co…
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