WPR11CA259
2011-06-08 · Palo Alto, California, United States · None · 1 aircraft · Status: Completed
Airport KPAO
Current FAA registration · N9849L
- Make / Model
- CESSNA 172P
- Year of manufacture
- 1986 · 25 years old at event
- Engine
- LYCOMING 0-320 SERIES (180 hp)
- Seats / Engines
- 4 seats · 1 engine
- Last airworthiness date
- 19860616
- ADS-B equipped
- Yes — Mode-S ADBD9E
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot's failure to maintain directional control during the landing roll.
Factual narrative
The pilot reported that during his descent to land, he observed the windsock and made a mental note to maintain aileron correction for the crosswind. As the airplane reached about 35-40 feet above the runway, the pilot reduced power to idle and at about 2 ft he initiated the landing flare. The stall warning horn sounded and the nose of the airplane started to veer to the left. After the airplane touched down, the pilot applied right rudder and the airplane started to veer off to the right. The airplane exited the right side of the runway and struck a pipe that was protruding from the ground, substantially damaging the nose gear and firewall. The pilot reported no mechanical failures or malfunctions with the airframe or engine that would have precluded normal flight. The pilot reported that during his descent to land, he observed the windsock and made a mental note to maintain aileron correction for the crosswind. As the airplane reached about 35-40 feet above the runway, the pilot reduced power to idle and at an altitude of 2 feet he initiated the landing flare. The stall warning horn sounded and the nose of the airplane started to veer to the left. After the airplane touched down, the pilot applied right rudder and the airplane started to veer off to the right. The airplane exited the right side of the runway and struck a pipe that was protruding from the ground, substantially damaging the nose gear and firewall. The pilot reported no mechanical failures or malfunctions with the airframe or engine that would have precluded normal flight. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
FAA avdata. C = Cause, F = Factor.
- — Environmental issues-Conditions/weather/phenomena-Wind-Crosswind-Response/compensation
- C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained - C
- C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C
Verbatim from NTSB's published report. Source file
NTSB_2011_WPR11CA259.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
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Related research
Matched on aircraft type or causal vocabulary (stall). All research papers
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- arXiv 2023 · arXiv preprint Polycrystallinity enhances stress build-up around ice
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- arXiv 2022 · arXiv preprint Enhanced Prediction of Three-dimensional Finite Iced Wing Separated Flow Near Stall
Icing on three-dimensional wings causes severe flow separation near stall. Standard improved delayed detached eddy simulation (IDDES) is unable to correctly predict the separating reattaching flow due…
- Embry-Riddle Scholarly Commons 2021 · Journal article (JAAER) Analysis on the Negative Emotional, Physiological, and Cognitive Responses Elicited from of the Activation of a Stall Alarm
Failing to identify an aerodynamic stall can lead to the inability of an aircraft to sustain flight. To warn pilots of an impending or fully-developed stall, many aircraft have safety devices installe…