Atlas / NTSB / CHI81IA049

NTSB CAROL · Event

Event CHI81IA049

1981-04-16 CHICAGO, Illinois, United States None 1 aircraft Status: Completed

Registry · N723T

FAA Aircraft Registry record.

Make / Model

SOWIEJA/CHALLENGER CHALLENGER II

Year of manufacture

1996

Engine

BOMBARDIER ROTAX (ALL)

Seats / Engines

2 seats · 1 engine

Last airworthiness date

19960311

ADS-B equipped

Yes — Mode-S A9B05A

Registrant of record

SOWIEJA DIANE L

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N723T Beech G18S None

Historical record (pre-1982)

NTSB recorded this accident in the pre-1982 coded-field schema — structured fields rather than free-text narrative. Decoded codes use established NTSB single-letter taxonomies; cause factors remain verbatim pending the Form 6120.4 codebook lookup.

Aircraft

BEECH G18S · N723T

Damage

Minor

Craft type

Airplane

Classification

C

Light condition

Dusk

Weather

VMC

Phase of flight

EE

Operator type

E

Airport

O'HARE INTL

Kind of flying

CJ

Weather at impact

Sky

OVERCAST

Wind

190° / 9 kt

Aircraft history

Serial number

0000000BA579

Total time

8,493 hrs

Pilot

Certificate

Commercial

Total hours

5,663

Age

36

Investigator remarks

LANDING GEAR CKT BRKR FOUND POPPED.

Cause factors

64/A/39 A
PILOT IN COMMAND FAILED TO ASSURE THE GEAR WAS DOWN AND LOCKED Cause — pilot/personnel action
88/J/AL J
MISCELLANEOUS ACTS,CONDITIONS CIRCUIT BREAKER POPPED Joint cause

Decoded against the NTSB Form 6120.4 cause-factor codebook (ct_Pre1982 table). Each row shows the raw triplet, modifier (Cause / Factor / etc.), category, and specific code.

Source: NTSB pre-1982 historical archive. Docket 5 0011. Source file NTSB_1981_5_0011.txt. Modern CAROL record on data.ntsb.gov ↗.

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