Atlas / NTSB / ANC72AA004

NTSB CAROL · Event

Event ANC72AA004

1971-08-21 SITKA, Alaska, United States Fatal 1 aircraft Status: Completed

Aircraft involved

N6348V HELIO ACFT H-295 Fatal

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-295 · N6348V

Damage

Destroyed

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

DC

Operator type

Business

Kind of flying

B3

Weather at impact

Sky

UNKNOWN/NOT REPORTED

Wind

135° / 15 kt

Aircraft history

Serial number

000000001290

Total time

2,156 hrs

Pilot

Certificate

Flight instructor (CFI)

Total hours

20,300

Age

47

Probable cause (from PRE1982.MDB)

FITTING P/N 391-030-4072.CVRG AD ISSUED 10/5/71.

Investigator remarks

FATIGUE FRACTURE OCCRD IN L WING LWR ATTACHMENT

Cause factors

70/C/AC C
AIRFRAME WING ATTACHMENT FITTINGS,BOLTS Cause
88/C/36 C
MISCELLANEOUS ACTS,CONDITIONS FATIGUE FRACTURE Cause
82/L/L L
WEATHER TURBULENCE, ASSOCIATED W/CLOUDS AND/OR THUNDERSTORMS
88/L/49 L
MISCELLANEOUS ACTS,CONDITIONS SEPARATION IN FLIGHT

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 2106. Source file NTSB_1971_3_2106.txt. Modern CAROL record on data.ntsb.gov ↗.

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