NTSB CAROL · Event
Event SEA04LA124
Registry · N1054K
FAA Aircraft Registry record.
Make / Model
MOONEY M20R
Year of manufacture
2000 · 4 years old at event
Engine
CONT MOTOR IO-550 SERIES (300 hp)
Seats / Engines
2 seats · 1 engine
Last airworthiness date
20001207
ADS-B equipped
Yes — Mode-S A01A35
Registrant of record
BONDY WILLIAM G
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot's improper flare, failure to maintain directional control, and inadequate remedial action, which resulted in the airplane impacting a taxiway sign along the side of the runway. A factor contributing to the accident was the taxiway sign.
Factual narrative
On July 6, 2004, at 1530 mountain daylight time, a Mooney M20R single-engine airplane, N1054K, sustained substantial damage following a loss of control while landing at the Friedman Memorial Airport (SUN), Hailey, Idaho. The airplane was registered to and operated by a private individual. The private pilot, sole occupant of the aircraft, was not injured. Visual meteorological conditions prevailed for the personal cross-country flight which was operated in accordance with 14 CFR Part 91, and a visual flight rules (VFR) flight plan was filed. The flight departed the Salt Lake City International Airport (SLC), Salt Lake City, Utah, approximately 1430, with SUN as its destination. In a telephone interview, and according to the Pilot /Operator Aircraft Accident Report (NTSB Form 6120.1/2), the pilot reported that when he was approximately 8 miles from the airport he configured the airplane for landing by lowering the landing gear, added one notch of flaps, pushed in the propeller control, and set the mixture control for a normal landing. The pilot stated that on a 3 1/2 mile final to Runway 31 he was advised by air traffic control that a jet aircraft was in front of him. The pilot further stated that on a 2 mile final he selected full flaps, trimmed the airplane, and noticed his approach speed on short final was 75 knots. The pilot reported that as he crossed the threshold he pulled the power back to idle, but as his landing gear touched the runway the airplane suddenly bounced, and then bounced a second time. The pilot further reported that he then attempted to abort the landing by adding full power, reducing the flaps and raising the landing gear, but the plane would not accelerate or climb. The pilot stated the airplane stayed in ground effect and weaved back and forth [left to right] before exiting the right side of the runway and impacting a taxiway sign with the left wing. The airplane subsequently swung around to the left and came to rest in an upright position facing west. The pilot turned off all the electrical [switches] and exited the aircraft uninjured. There was no post-accident fire. A Federal Aviation Administration (FAA) inspector, who traveled to the accident site, reported that one propeller blade was found to be loose in the propeller hub and that both propeller blades were severely curled back. The inboard section of the left wing's leading edge was crushed aft and the lower fuselage sustained skin damage from the nose wheel area to just aft of the flap attachment. A certified aircraft and power plant mechanic reported substantial damage to the left wing root area and main spar. The mechanic also confirmed that the flaps were in the full up, retracted position. At 1555, the weather reporting facility at SUN indicated the wind was 270 degrees at 8 knots, with visibility 30 statute miles. As the airplane crossed the threshold the pilot pulled the power back to idle, but as his landing gear touched the runway the airplane suddenly bounced twice. The pilot attempted to abort the landing by adding full power, raising the flaps, and retracting the landing gear, but the plane would not accelerate or climb. The airplane stayed in ground effect, weaving back and forth, then exited the runway to the right before impacting a taxiway sign with its left wing. The airplane subsequently swung around to the left, coming to rest in an upright position facing west. The airplane sustained substantial damage to the left wing root area and main spar. Reported wind at the time of the accident was 270 degrees at 8 knots. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2004_SEA04LA124.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
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Academic papers and agency reports matching this event's aircraft type or causal vocabulary (loss of control). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER)
A Scoping Review of Aviation Loss of Control Inflight Research
Loss of control – inflight (LOC-I) contributes to aircraft accidents at unacceptably high rates. Significant industry efforts and research have aimed to improve LOC-I prevention, detection, and recove…
- SKYbrary (Eurocontrol) 2024 · SKYbrary article
Loss of Control In-Flight (LOC-I) — SKYbrary Knowledge Base
SKYbrary comprehensive knowledge-base entry on Loss of Control In-Flight — definitions, contributing factors, accident case studies (Air France 447, Colgan 3407), and prevention strategies.
- NTSB Aircraft Accident Reports 2022 · Accident report
Loss of Control on Takeoff in Icing Conditions — Citation 560XL
Cessna Citation 560XL fatal takeoff icing accident, March 2018. Investigation of a Citation 560XL loss-of-control takeoff accident in icing conditions.
- Semantic Scholar 2021 · Article (Aviation)
ANALYSIS OF GENERAL AVIATION FIXED-WING AIRCRAFT ACCIDENTS INVOLVING INFLIGHT LOSS OF CONTROL USING A STATE-BASED APPROACH
Inflight loss of control (LOC-I) is a significant cause of General Aviation (GA) fixed-wing aircraft accidents. The United States National Transportation Safety Board’s database provides a rich source…
- NASA NTRS 2021 · Presentation
Use of Design of Experiments in Determining Neural Network Architectures for Loss of Control Detection
Abstract—We describe empirical methods for selecting a neural network architecture to implement belief state inference on generic commercial transport aircraft.
- NASA NTRS 2021 · Conference Paper
Use of Design of Experiments in Determining Neural Network Architectures for Loss of Control Detection
We describe empirical methods for selecting a neural network architecture to implement belief state inference on generic commercial transport aircraft.
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