Atlas / NTSB / OAK71AP036

NTSB CAROL · Event

Event OAK71AP036

1971-03-27 FAIRFIELD, California, United States Minor 1 aircraft Status: Completed

Registry · N2554X

FAA Aircraft Registry record.

Make / Model

CESSNA P206

Year of manufacture

1964 · 7 years old at event

Engine

CONT MOTOR IO 520 SERIES (285 hp)

Seats / Engines

6 seats · 1 engine

Last airworthiness date

19641228

ADS-B equipped

Yes — Mode-S A26D0B

Registrant of record

WALLIN JUSTIN

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N2554X Cessna P206 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

CESSNA P206 · N2554X

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

D1

Operator type

E

Kind of flying

CI

Weather at impact

Sky

CLEAR

Aircraft history

Serial number

000P206-0054

Total time

4,319 hrs

Pilot

Certificate

Flight instructor (CFI)

Total hours

11,211

Age

41

Probable cause (from PRE1982.MDB)

ND BENDING OVERLOAD FRACTURE,PROP SEPD,NOT FOUND.

Investigator remarks

CRANKSHAFT BREAK TYPICAL OF A COMBINED TENSION A

Cause factors

74/C/AB C
POWERPLANT CRANKSHAFT Cause
88/C/94 C
MISCELLANEOUS ACTS,CONDITIONS OVERLOAD FAILURE Cause
83/B/A B
TERRAIN WET,SOFT GROUND
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 2386. Source file NTSB_1971_3_2386.txt. Modern CAROL record on data.ntsb.gov ↗.

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