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Atlas / NTSB / CHI96LA056

NTSB CAROL · Event

Event CHI96LA056

1995-12-16 HOT SPRINGS, South Dakota, United States Minor 1 aircraft Status: Completed

Registry · N12010

FAA Aircraft Registry record.

Make / Model

BOEING 787-10

Year of manufacture

2019

Engine

GE GENX-1B76/P2

Seats / Engines

120 seats · 2 engines

Last airworthiness date

20191223

ADS-B equipped

Yes — Mode-S A05646

Registrant of record

UNITED AIRLINES INC

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

an unauthorized modification of the air induction system by the pilot.

Factual narrative

On December 16, 1995, at 1800 mountain standard time (mst), a Maule M-4, N12010, piloted by a private pilot, was substantially damaged, when it collided with terrain, following a loss of engine power shortly after takeoff. Visual meteorological conditions prevailed at the time of the accident. The personal 14 CFR Part 91 flight was not operating on a flight plan. The pilot reported minor injuries, the two passengers were uninjured. The flight departed from Hot Springs, South Dakota, en route to Sioux Falls, South Dakota, exact time unknown. During a telephone interview with the pilot on December 18, 1995 the pilot explained the reason for the loss of power. He said that in an attempt to increase the amount of cabin heat, he closed off the two air inlets to the engine with cardboard. One air inlet allows cooling air to enter the cowling, the second air inlet supplies air to the carburetor. The pilot reported that after takeoff the airplane would not climb. The airplane's propeller, firewall and fuselage longerons were bent, and the main landing gear was knocked off during the forced landing. The pilot said that in an attempt to increase the amount of cabin heat, he closed off the two air inlets to the engine with cardboard. One air inlet allows cooling air to enter the cowling, the second air inlet supplies air to the carburetor. After takeoff, the pilot reported the airplane would not climb, and a forced landing was made. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1995_CHI96LA056.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.