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Atlas / NTSB / ANC99LA075

NTSB CAROL · Event

Event ANC99LA075

1999-06-11 BIG LAKE, Alaska, United States Airport · Z40 Serious 1 aircraft Status: Completed

Registry · N2668P

FAA Aircraft Registry record.

Make / Model

PIPER PA-18-150

Year of manufacture

1955 · 44 years old at event

Engine

LYCOMING 0-320 SERIES (180 hp)

Seats / Engines

2 seats · 1 engine

Last airworthiness date

19560302

ADS-B equipped

Yes — Mode-S A298C5

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The pilot's inadvertent stall during takeoff. Factors associated with the accident are wind gusts and turbulence.

Factual narrative

On June 11, 1999, about 1540 Alaska daylight time, a Short Takeoff and Landing (STOL) equipped Piper PA-18 airplane, N2668P, sustained substantial damage during takeoff at the Goose Bay airstrip, about 10 miles south of Big Lake, Alaska. The airplane was being operated as a visual flight rules (VFR) personal flight under Title 14, CFR Part 91, when the accident occurred. The certificated private pilot, the sole occupant, sustained serious injuries. Visual meteorological conditions prevailed, and no flight plan was filed. The flight was en route to Merrill Field, Anchorage, Alaska. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on June 11, the pilot reported that he departed on runway 07. During the initial climb, about 100 feet above the ground, he said he encountered turbulence and windshear, and the airplane abruptly rolled to the right. He said he responded with abrupt aileron control input to the left, but the airplane did not respond, and indicated the controls felt "mushy, and ineffective." He was unable to regain control of the airplane, and it nosed down and collided with trees bordering the airstrip. He estimated the wind to be easterly, at 15, gusting to 25, knots. The pilot also noted in his NTSB Pilot/Operator Accident Report, that there were no preimpact mechanical anomalies with the airplane. The IIC interviewed another pilot who departed the same runway about 15 minutes prior to the accident airplane. This pilot reported moderate low level turbulence on initial climb. When he returned about 45 minutes later (about 30 minutes after the accident flight), he said the level of turbulence had increased, and he was forced to use full aileron control deflection during the approach and landing. An FAA airworthiness inspector went to the accident site the day of the accident and inspected the airplane. He reported to the NTSB IIC that all the flight controls were attached to their appropriate controls, and appeared functional. He discovered no evidence of any preimpact mechanical anomaly. The airplane sustained substantial damage to the propeller and left wing. The pilot was departing a gravel airstrip bordered by trees in his short takeoff and landing (STOL) equipped airplane. About 100 feet above the ground, he reported he encountered turbulence, and lost control of the airplane. The airplane collided with trees near the airstrip. Postaccident inspection of the airplane disclosed no evidence of any preimpact mechanical anomalies. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1999_ANC99LA075.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

Related research

What the literature says.

Academic papers and agency reports matching this event's aircraft type or causal vocabulary (stall, turbulence). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.

Browse the full corpus — academia portal ↗