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Atlas / NTSB / ANC74AA042

NTSB CAROL · Event

Event ANC74AA042

1973-10-30 PORT HEIDEN, Alaska, United States None 1 aircraft Status: Completed

Aircraft involved

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

PIPER PA-32 · N4236T

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

D1

Operator type

E

Kind of flying

CJ

Weather at impact

Sky

SCATTERED-ABOVE 1000 FEET

Wind

310° / 10 kt

Aircraft history

Serial number

0032-7240049

Total time

1,570 hrs

Pilot

Certificate

GA (GA)

Total hours

7,000

Age

33

Probable cause (from PRE1982.MDB)

IVE GR. LND ON TUNDRA.

Investigator remarks

MAG IMPULSE COUPLER FLY WTS FAILED,JAMMED MAG DR

Cause factors

  • 74/C/BA C
    POWERPLANT MAGNETOS Cause
  • 88/C/BQ C
    MISCELLANEOUS ACTS,CONDITIONS EXCESSIVE-WEAR/PLAY Cause
  • 88/C/CD C
    MISCELLANEOUS ACTS,CONDITIONS JAMMED Cause
  • 68/C/D6 C
    PERSONNEL INADEQUATE MAINTENANCE AND INSPECTION Cause
  • 83/B/F B
    TERRAIN ROUGH/UNEVEN
  • 88/K/94 K
    MISCELLANEOUS ACTS,CONDITIONS OVERLOAD FAILURE 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 3298. Source file NTSB_1973_3_3298.txt. Modern CAROL record on data.ntsb.gov ↗.