Atlas / NTSB / ANC73DAH03

NTSB CAROL · Event

Event ANC73DAH03

1973-06-10 SOLDOTNA, Alaska, United States Minor 1 aircraft Status: Completed

Aircraft involved

N92527 Piper PA-12 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

PIPER PA-12 · N92527

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

D1

Operator type

D

Kind of flying

B0

Weather at impact

Sky

CLEAR

Temp

50° F

Aircraft history

Serial number

000000012-50

Total time

1,460 hrs

Pilot

Certificate

Commercial — instrument

Total hours

256

Age

46

Investigator remarks

EXHAUST VALVE IN NO.3 CYL SEPN.

Cause factors

74/C/AF C
POWERPLANT VALVE ASSEMBLIES Cause
88/C/95 C
MISCELLANEOUS ACTS,CONDITIONS MATERIAL FAILURE Cause
88/C/BM C
MISCELLANEOUS ACTS,CONDITIONS DISCONNECTED Cause
83/B/I B
TERRAIN HIGH OBSTRUCTIONS

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 2226. Source file NTSB_1973_3_2226.txt. Modern CAROL record on data.ntsb.gov ↗.

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