Atlas / NTSB / ANC76DAA01

NTSB CAROL · Event

Event ANC76DAA01

1975-07-05 NORTHWAY, Alaska, United States None 1 aircraft Status: Completed

Aircraft involved

N90901 HELIO ACFT H-391B 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

HELIO ACFT H-391B · N90901

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

C0

Operator type

D

Airport

NORTHWAY

Kind of flying

B0

Weather at impact

Sky

SCATTERED-ABOVE 1000 FEET

Temp

68° F

Aircraft history

Serial number

000000000062

Total time

1,400 hrs

Pilot

Certificate

Commercial

Total hours

2,700

Age

56

Investigator remarks

R OLEO STRUT FAILED.

Cause factors

70/A/CA A
AIRFRAME MAIN GEAR-SHOCK ABSORBING ASSY,STRUTS,ATTACHMENTS,ETC. Cause — pilot/personnel action
88/A/AH A
MISCELLANEOUS ACTS,CONDITIONS PREVIOUS DAMAGE Cause — pilot/personnel action

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 4014. Source file NTSB_1975_3_4014.txt. Modern CAROL record on data.ntsb.gov ↗.

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