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WPR11CA433

2011-09-03 · Kanab, Utah, United States · None · 1 aircraft · Status: Completed

Airport KNB

Current FAA registration · N17S

Make / Model
GLASAIR GLASAIR III
Year of manufacture
1998 · 13 years old at event
Engine
LYCOMING IO-540 SER (300 hp)
Seats / Engines
2 seats · 1 engine
Last airworthiness date
19980417
ADS-B equipped
Yes — Mode-S A11864

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The pilot’s failure to maintain directional control during the landing roll, as a result of a flat left main landing gear tire.

Factual narrative

The pilot reported that when the airplane touched down on the runway he felt a vibration followed by the airplane pulling to the left. The pilot added right brake in attempt to realign the airplane; however, it continued to the left and exited the left side of the runway. The airplane traversed over the gravel adjacent to the runway and into brush, where it came to rest. Post accident examination of the airplane by a Federal Aviation Administration inspector revealed that the airplane’s left main landing gear tire was flat. No other anomalies were noted that would have precluded normal flight. According to the pilot, when the airplane touched down on the runway, he felt a vibration followed by the airplane pulling to the left. The pilot added right brake in attempt to realign the airplane; however, it continued to the left and exited the left side of the runway. The airplane traversed over the gravel adjacent to the runway and into brush, where it came to rest. A postaccident examination of the airplane revealed that the airplane’s left main landing gear tire was flat. No other anomalies were noted that would have precluded normal flight. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

FAA avdata. C = Cause, F = Factor.

  • C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Attain/maintain not possible - C
  • C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C
  • C Aircraft-Aircraft systems-Landing gear system-Tube-Failure - C

Verbatim from NTSB's published report. Source file NTSB_2011_WPR11CA433.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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