Atlas / NTSB / CHI75FEM42

NTSB CAROL · Event

Event CHI75FEM42

1975-05-24 TRAVERSE CITY, Michigan, United States None 1 aircraft Status: Completed

Aircraft involved

N9662F Hughes 269C 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

HUGHES 269C · N9662F

Damage

Substantial

Craft type

Balloon

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

D1

Operator type

Business

Kind of flying

DD

Weather at impact

Sky

OVERCAST

Aircraft history

Serial number

000000210093

Total time

758 hrs

Pilot

Certificate

Commercial

Total hours

3,186

Age

48

Probable cause (from PRE1982.MDB)

.

Investigator remarks

SLIGHT DOWNHILL SLOPE.NR 2 CYL EX VALVE HEAD BKN

Cause factors

74/C/AF C
POWERPLANT VALVE ASSEMBLIES Cause
88/C/95 C
MISCELLANEOUS ACTS,CONDITIONS MATERIAL FAILURE Cause
64/B/18 B
PILOT IN COMMAND FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
83/K/I K
TERRAIN HIGH OBSTRUCTIONS Joint factor

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 1662. Source file NTSB_1975_3_1662.txt. Modern CAROL record on data.ntsb.gov ↗.

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