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Atlas / NTSB / ANC06LA072

NTSB CAROL · Event

Event ANC06LA072

2006-05-19 Anchorage, Alaska, United States None 1 aircraft Status: Completed

Registry · N6324V

FAA Aircraft Registry record.

Make / Model

HELIO H-250

Year of manufacture

1968 · 38 years old at event

Engine

LYCOMING 0-540 SERIES (250 hp)

Seats / Engines

6 seats · 1 engine

ADS-B equipped

Yes — Mode-S A84822

Registrant of record

BRANHAM CHRIS R

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The pilot's improper use of the carburetor heat control during takeoff, which resulted in a partial loss of engine power, a hard landing, and an on ground encounter with terrain. A factor contributing to the accident was an inadvertent ground loop.

Factual narrative

On May 19, 2006, about 1830 Alaska daylight time, a wheel-equipped Helio H-250 airplane, N6324V, sustained substantial damage when it departed the runway surface following an aborted takeoff from a remote airport, about 14 miles northwest of Anchorage, Alaska. The airplane was being operated as a visual flight rules (VFR) local area personal flight under Title 14, CFR Part 91, when the accident occurred. The airplane was operated by the pilot. The private certificated pilot and the sole passenger were not injured. Visual meteorological conditions prevailed, and no flight plan was filed. The flight originated at the Little Su Lodge, and was en route to Merrill Field, Anchorage. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on June 21, 2006, the pilot reported that he was departing toward the south on a grass surface runway that was oriented north/south. The runway was about 3,000 feet long, and about 150 feet wide. The pilot said that during the takeoff run, the engine did not seem to be producing full power. The airplane lifted off to about 10 feet above ground level (agl), but the pilot decided to abort the takeoff and pulled the throttle to idle. The airplane landed hard and began to veer to the left. The pilot said the airplane ground looped to the left, departed off the left side of the runway, and collided with alder bushes. The airplane received structural damage to the right main landing gear, and the left wing and left aileron. The pilot reported that the airplane engine did not have any mechanical malfunction. He said that after the accident, he discovered that the carburetor heat control was in the "on" position. The pilot did not submit a Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1). The private certificated pilot was departing a grass surface runway on a Title 14, CFR Part 91 personal flight. The runway was about 3,000 feet long, and about 150 feet wide. The pilot said that during the takeoff run, the engine did not seem to be producing full power. The airplane lifted off to about 10 feet above ground level, but the pilot decided to abort the takeoff and pulled the throttle to idle. The airplane landed hard and began to veer to the left. The pilot said the airplane ground looped to the left, departed off the left side of the runway, and collided with alder bushes. The airplane received structural damage to the right main landing gear, and the left wing and left aileron. The pilot reported that the airplane engine did not have any mechanical malfunction. He said that after the accident, he discovered that the carburetor heat control was in the "on" position. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_2006_ANC06LA072.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.