Atlas / NTSB / OAK71DVA63

NTSB CAROL · Event

Event OAK71DVA63

1971-03-26 MADERA, California, United States None 1 aircraft Status: Completed

Registry · N84009

FAA Aircraft Registry record.

Make / Model

CESSNA 172K

Year of manufacture

1969 · 2 years old at event

Engine

LYCOMING IO-320 SERIES (150 hp)

Seats / Engines

4 seats · 1 engine

Last airworthiness date

19690526

ADS-B equipped

Yes — Mode-S AB8253

Registrant of record

SWENSON CATHERINE A TRUSTEE

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N84009 Cessna 172K None

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 172K · N84009

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

D1

Operator type

E

Kind of flying

DD

Weather at impact

Sky

OVERCAST

Aircraft history

Serial number

000172-58299

Total time

829 hrs

Pilot

Certificate

Flight instructor (CFI)

Total hours

1,200

Age

29

Probable cause (from PRE1982.MDB)

IN ENG FORCING A LDG IN A PLWD FIELD.

Investigator remarks

8 IN OF BLD LOST IN FLT SET UP SEVERE VIBRATION

Cause factors

74/C/FA C
POWERPLANT BLADES Cause
88/C/95 C
MISCELLANEOUS ACTS,CONDITIONS MATERIAL FAILURE Cause
83/B/A B
TERRAIN WET,SOFT GROUND

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 1087. Source file NTSB_1971_3_1087.txt. Modern CAROL record on data.ntsb.gov ↗.

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