NTSB CAROL · Event
Event ANC15CA027
Registry · N4079H
FAA Aircraft Registry record.
Make / Model
PIPER PA-31-350
Year of manufacture
1981 · 34 years old at event
Engine
LYCOMING TI0-540 SER (310 hp)
Seats / Engines
8 seats · 2 engines
Last airworthiness date
19810217
ADS-B equipped
Yes — Mode-S A4CA3D
Registrant of record
WARBELOW'S AIR VENTURES INC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot's failure to extend the landing gear before landing. Contributing to the accident was the pilot's decision to continue the approach to landing while distracted and his failure to complete the landing checklist.
Factual narrative
The pilot was landing a retractable landing gear-equipped, twin engine airplane at an uncontrolled airport. While on final approach, an airplane that landed in front of him reported a moose in the vicinity of the runway. An airport maintenance person announced on the common traffic advisory frequency (CTAF) that he was attempting to chase the moose off of the runway. The pilot became distracted trying to avoid wake turbulence from the preceding airplane and monitor the location of the vehicle and moose and failed to extend the landing gear prior to landing. During touchdown, the airplane contacted the runway with the landing gear retracted, and it slid about 1,200 feet. The airplane sustained substantial damage to the fuselage. The pilot stated that there were no preaccident mechanical anomalies with the airplane that would have precluded normal operation. The pilot was landing a retractable landing gear-equipped, twin engine airplane at an uncontrolled airport. While on final approach, an airplane that landed in front of him reported a moose in the vicinity of the runway. An airport maintenance person announced on the common traffic advisory frequency (CTAF) that he was attempting to chase the moose off of the runway. The pilot became distracted trying to avoid wake turbulence from the preceding airplane and monitor the location of the vehicle and moose and failed to extend the landing gear prior to landing. During touchdown, the airplane contacted the runway with the landing gear retracted, and it slid about 1,200 feet. The airplane sustained substantial damage to the fuselage. The pilot stated that there were no preaccident mechanical anomalies with the airplane that would have precluded normal operation. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).
- C Personnel issues-Task performance-Use of equip/info-Use of equip/system-Pilot - C
- C Aircraft-Aircraft systems-Landing gear system-Landing gear selector-Not used/operated - C
- F Personnel issues-Task performance-Use of equip/info-Use of checklist-Pilot - F
- F Personnel issues-Psychological-Attention/monitoring-Task monitoring/vigilance-Pilot - F
Verbatim from NTSB's published report. Source file
NTSB_2015_ANC15CA027.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 (wake turbulence, turbulence, maintenance). 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
Aircraft wake turbulence minimization by aerodynamic means
The paper reviews NASA's efforts on wake vortex turbulence minimization by aerodynamic design or retrofit modifications to large transport aircraft.
- NASA NTRS 2019 · Conference Paper
Wake Turbulence Mitigation for Arrivals (WTMA)
The preliminary Wake Turbulence Mitigation for Arrivals (WTMA) concept of operations is described in this paper. The WTMA concept provides further detail to work initiated by the Wake Vortex Avoidance…
- NASA NTRS 2019 · Conference Paper
Aircraft wake turbulence avoidance
Aircraft wake turbulence /trailing vortex systems/ avoidance during flight, describing procedures for pilots and tower operators
- NASA NTRS 2019 · Conference Paper
Aircraft wake turbulence progress and plans
Aircraft wake turbulence and trailing vortices, investigating physical characteristics, hazard potential and avoidance techniques
- 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.
- 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 ↗