Atlas / NTSB / CHI71FBD21

NTSB CAROL · Event

Event CHI71FBD21

1970-09-11 WEST CHICAGO, Illinois, United States None 1 aircraft Status: Completed

Aircraft involved

N5049E AERO COMDR 680W 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

AERO COMDR 680W · N5049E

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

D2

Operator type

Business

Airport

DUPAGE COUNTY

Kind of flying

B2

Weather at impact

Sky

CLEAR

Aircraft history

Serial number

0000001760-6

Total time

1,180 hrs

Pilot

Certificate

GA (GA)

Total hours

3,600

Age

29

Probable cause (from PRE1982.MDB)

TED.SHAFT AND GR DISENGAGED FROM 1ST REDUCTION GR.

Investigator remarks

HI SPEED PINION ASSEMBLY SUPPORT HOUSING FRAGMEN

Cause factors

74/C/PY C
POWERPLANT OTHER Cause
88/C/95 C
MISCELLANEOUS ACTS,CONDITIONS MATERIAL FAILURE 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 3 3716. Source file NTSB_1970_3_3716.txt. Modern CAROL record on data.ntsb.gov ↗.

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