NTSB CAROL · Event
Event SEA98LA113
Registry · N44536
FAA Aircraft Registry record.
Make / Model
PIPER PA-18-150
Engine
LYCOMING 0-320 SERIES (180 hp)
Seats / Engines
2 seats · 1 engine
Last airworthiness date
19980502
ADS-B equipped
Yes — Mode-S A56010
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot's failure to maintain airspeed while maneuvering to an emergency landing, resulting in an inadvertent stall/mush into the terrain. A contributing factor was the high density altitude.
Factual narrative
On June 28, 1998, approximately 1100 mountain daylight time, a Piper PA-18, N44536, impacted the terrain shortly after takeoff from Big Creek Airstrip, Big Creek, Idaho. The private pilot, who was the sole occupant, received serious injuries, and the aircraft, which was owned and operated by the pilot, sustained substantial damage. The 14 CFR Part 91 personal pleasure flight, which departed the airstrip en route to Caldwell, Idaho, less than a minute before the accident, was being operated in visual meteorological conditions. No flight plan had been filed, and the ELT, which was activated by the impact, was turned off at the scene. According to the pilot, while his aircraft was tied down off to the side of the grass airstrip, the pilot of a Cessna 195 pulled in to park next to him. As the 195 pilot swung his aircraft into the adjacent parking spot, the wing of the 195 overlapped the wing of the PA-18. As the 195 wing passed over the PA-18 wing, the tie-down loop on the bottom of the 195 wing tore the top wing skin of the PA-18 and inflicted minor damage on one of the ribs. Prior to attempting his takeoff to return to Caldwell, the pilot of the PA-18 "repaired" the damaged rib and torn wing skin with duct tape. According to the pilot, after the aircraft lifted off, it felt like something was wrong with the way the aircraft was flying. Because he thought the aircraft's flight characteristics might be related to the "repaired" wing, he elected to immediately land in the opposite direction from which he departed. In order to execute this maneuver, the pilot turned right about 70 to 80 degrees from the runway heading when he was about one-half way down the runway. He then rolled into a steeply banked turn to the left. According to witnesses, this turn appeared to be bringing the aircraft back over the runway in a direction opposite from departure. But as the aircraft neared the runway edge, the turn appeared to "tighten up," and the aircraft suddenly sank into the terrain. The pilot later said that in trying to get the aircraft around to the runway, he allowed the airspeed to get too slow, and the angle of bank too get too steep, resulting in a low-altitude stall/mush into the terrain. According to witnesses, the aircraft never got higher than 100 feet above the ground (AGL) during this entire maneuver. Density altitude was later calculated to be approximately 7,800 feet. Just after takeoff from the grass/turf airstrip, the pilot sensed that something was wrong with the way the aircraft was performing. Since he was concerned that the perceived performance irregularity may be related to a 'repair' he had performed using duct tape to strengthen a bent wing rib and to cover torn wing skin, he elected to make an immediate emergency landing. In order to land in the opposite direction from which he took off, the pilot turned right about 70 or 80 degrees, and then entered a steeply banked left turn in order to bring the aircraft back around to the runway. As the aircraft neared the runway, the turn tightened, and the pilot let the aircraft get below minimum power-on stalling speed. The aircraft then stall/mushed into the terrain. According to witnesses, the aircraft never got more than 100 feet above the ground (AGL) during the entire maneuver. The density altitude was later calculated to be approximately 7,800 feet. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1998_SEA98LA113.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 (stall). 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 2026 · Conference Paper
Computational Analysis of Steady State Aerodynamics of Transonic Truss-Braced Wing Configuration in Deep Stall
This study presents a computational investigation of steady state aerodynamics of the Subsonic Ultra-Green Aircraft Research (SUGAR) Transonic Truss-Braced Wing (TTBW) configuration over a wide range …
- arXiv 2023 · arXiv preprint
Automating Bird Diverter Installation through Multi-Aerial Robots and Signal Temporal Logic Specifications
This paper tackles the task assignment and trajectory generation problem for bird diverter installation using a fleet of multi-rotors.
- arXiv 2023 · arXiv preprint
Variation of Critical Crystallization Pressure for the Formation of Square Ice in Graphene Nanocapillaries
Two-dimensional square ice in graphene nanocapillaries at room temperature is a fascinating phenomenon and has been confirmed experimentally.
- arXiv 2023 · arXiv preprint
Polycrystallinity enhances stress build-up around ice
Damage caused by freezing wet, porous materials is a widespread problem, but is hard to predict or control. Here, we show that polycrystallinity makes a great difference to the stress build-up process…
- 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…
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