Atlas / NTSB / OAK68D0365

NTSB CAROL · Event

Event OAK68D0365

1968-05-02 COLUSA, California, United States Minor 1 aircraft Status: Completed

Registry · N51281

FAA Aircraft Registry record.

Make / Model

BOEING A75N1(PT17)

Year of manufacture

1941 · 27 years old at event

Engine

LYCOMING R680 (215 hp)

Seats / Engines

2 seats · 1 engine

Last airworthiness date

19720211

ADS-B equipped

Yes — Mode-S A66C67

Registrant of record

JENNY TIMOTHY J

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N51281 Boeing A75 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

BOEING A75 · N51281

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

DD

Operator type

Part 135 (air taxi/commuter)

Airport

DAVIS STRIP

Kind of flying

CB

Weather at impact

Sky

CLEAR

Temp

65° F

Aircraft history

Total time

3,625 hrs

Pilot

Certificate

Commercial

Total hours

3,500

Age

37

Probable cause (from PRE1982.MDB)

D OF NO 3 CYL CAUSED PRE-IGNITION.

Investigator remarks

CENTER ELECTRODE LOOSENED AND PROTRUDED INTO HEA

Cause factors

74/C/BC C
POWERPLANT SPARK PLUG Cause
88/C/95 C
MISCELLANEOUS ACTS,CONDITIONS MATERIAL FAILURE Cause

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 1004. Source file NTSB_1968_3_1004.txt. Modern CAROL record on data.ntsb.gov ↗.

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