NTSB CAROL · Event
Event LAX00LA072
Aircraft involved
Probable cause & findings
Encounter with Clear Air Turbulence. Poor communication between the captain and flight attendants as to the urgency for the flight attendants to take their seats was a contributing factor.
Factual narrative
On January 11, 2000, about 2151 hours Pacific standard time, America West Flight 2744, a Boeing 757-2G7, N909AW, encountered moderate to severe turbulence while cruising at 35,000 feet over Alamosa, Colorado. America West Airlines, Inc., operated the airplane as a domestic, scheduled passenger flight under the provisions of 14 CFR Part 121. The airline transport pilot rated captain, co-pilot, 2 flight attendants, and 38 passengers were not injured; 1 flight attendant suffered minor injuries while another flight attendant sustained serious injuries. The flight departed Columbus, Ohio, about 2036 eastern standard time and landed at its intended destination, Las Vegas (LAS), Nevada, at 2227 Pacific standard time. Visual meteorological conditions prevailed and an IFR flight plan had been filed. Approximately 2 hours from landing, the flight crew called the flight attendants to inform them that turbulence was expected (based on ATC ride reports) and to secure the cabin and galleys. The flight crew said the airplane had been slowed to 0.78 Mach when turbulence was encountered. A flight attendant reported that the seatbelt sign did not illuminate immediately after announcement, so they continued service. About 10-15 minutes passed before the flight crew activated the seatbelt sign, at which point the flight attendants expedited their service tasks. (One flight attendant reported that before the seatbelt signs turned on, the turbulence had been "mild.") As the flight attendants were completing their tasks, the airplane encountered about 4 seconds of moderate to severe turbulence. The flight attendants took the most conveniently located passenger seats. One flight attendant, now in seat 34C, did not fasten her seatbelt immediately. She was lifted into the air during the encounter. She hit the overhead compartment and fell on the armrest and then to the floor. The first flight attendant briefed the captain on the situation and verified that the passengers were uninjured. The captain contacted the contracted medical service company (Med-Link); and a Public Address (PA) announcement was made asking for onboard medical assistance. A former Emergency Medical Technician (EMT) responded and assisted the injured flight attendant. The captain reported to ATC that the flight had encountered moderate wave with "moderate turbulence plus," and recommended alternate routing for other aircraft. The flight continued to LAS without further incident. The flight crew was drug tested (negative results), and the airplane received a structural inspection after the mishap. No structural damage was found. One flight attendant sustained serious injuries and another sustained minor injuries when the airplane encountered moderate to severe turbulence while in cruise flight at 35,000 feet. Approximately 2 hours from landing, the flight crew called the flight attendants to inform them that turbulence was expected (based on ATC ride reports) and to secure the cabin and galleys. The flight crew said the airplane had been slowed to 0.78 Mach when turbulence was encountered. One flight attendant, now in seat 34C, did not fasten her seatbelt immediately. She was lifted into the air during the encounter. She hit the overhead compartment and fell on an armrest and then to the floor. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2000_LAX00LA072.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 or causal vocabulary (turbulence). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- arXiv 2026 · arXiv preprint
Direct Numerical Simulations of Ice-Ocean Boundary Turbulence
Turbulent heat and freshwater transport at ice-ocean interfaces controls glacier and iceberg melt rates, yet the underlying physics remains poorly constrained.
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER)
Political Turbulence and Aviation Safety: A Cross-National Analysis of Political Stability's Effects on Aviation Accidents
To what extent does political stability affect aviation safety? This research aims to link domestic political conditions and public safety through the consideration of aviation accident frequency.
- arXiv 2025 · arXiv preprint
Explainable LiDAR 3D Point Cloud Segmentation and Clustering for Detecting Airplane-Generated Wind Turbulence
Wake vortices - strong, coherent air turbulences created by aircraft - pose a significant risk to aviation safety and therefore require accurate and reliable detection methods.
- arXiv 2024 · arXiv preprint
Does small-scale turbulence matter for ice growth in mixed-phase clouds?
Representing the glaciation of mixed-phase clouds in terms of the Wegener-Bergeron-Findeisen process is a challenge for many weather and climate models, which tend to overestimate this process because…
- arXiv 2023 · arXiv preprint
Effects of electrostatic interaction on clustering and collision of bidispersed inertial particles in homogeneous and isotropic turbulence
In sandstorms and thunderclouds, turbulence-induced collisions between solid particles and ice crystals lead to inevitable triboelectrification.
- SKYbrary (Eurocontrol) 2023 · SKYbrary article
Wake Vortex Turbulence — SKYbrary Knowledge Base
SKYbrary wake vortex turbulence comprehensive article — generation mechanics, dissipation factors, separation standards (ICAO LIGHT/MEDIUM/HEAVY/SUPER + recategorisation RECAT-EU).
Browse the full corpus — academia portal ↗