Atlas / NTSB / CHI70F0084

NTSB CAROL · Event

Event CHI70F0084

1969-06-29 ANN ARBOR, Michigan, United States Minor 1 aircraft Status: Completed

Aircraft involved

N7987C N.AMERICAN AT-6 Minor

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

N.AMERICAN AT-6 · N7987C

Damage

Destroyed

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

Takeoff — initial climb (C1)

Operator type

D

Airport

ANN ARBOR

Kind of flying

B0

Weather at impact

Sky

CLEAR

Wind

120° / 10 kt

Temp

80° F

Aircraft history

Total time

4,386 hrs

Pilot

Certificate

Commercial

Total hours

472

Age

28

Probable cause (from PRE1982.MDB)

DS SHORTING-OUT IN NR 4 CYL.

Investigator remarks

HIT T-HANGAR.SPARK PLUGS OIL FOULED,IGNITION LEA

Cause factors

74/C/BC C
POWERPLANT SPARK PLUG Cause
74/C/BI C
POWERPLANT LEADS Cause
68/C/D6 C
PERSONNEL INADEQUATE MAINTENANCE AND INSPECTION 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 1948. Source file NTSB_1969_3_1948.txt. Modern CAROL record on data.ntsb.gov ↗.

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