Atlas / NTSB / OAK75FVD43

NTSB CAROL · Event

Event OAK75FVD43

1975-04-17 SONOMA, California, United States Minor 1 aircraft Status: Completed

Registry · N3995L

FAA Aircraft Registry record.

Make / Model

CESSNA 172G

Year of manufacture

1966 · 9 years old at event

Engine

CONT MOTOR 0-300 SER (145 hp)

Seats / Engines

4 seats · 1 engine

Last airworthiness date

19660118

ADS-B equipped

Yes — Mode-S A4A74A

Registrant of record

LEE VALERIE A

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N3995L Cessna 172G 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 172G · N3995L

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

EE

Operator type

D

Airport

SONOMA VALLEY

Kind of flying

B0

Weather at impact

Sky

CLEAR

Wind

250° / 20 kt

Aircraft history

Serial number

000017254164

Total time

3,300 hrs

Pilot

Certificate

Airline transport

Total hours

40

Age

39

Probable cause (from PRE1982.MDB)

2 IN.

Investigator remarks

EXTERNAL GUST LOCK RESTRICTED ELEV TRAVEL TO ABT

Cause factors

64/C/29 C
PILOT IN COMMAND INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING Cause
88/C/09 C
MISCELLANEOUS ACTS,CONDITIONS GUST LOCKS ENGAGED Cause
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 0831. Source file NTSB_1975_3_0831.txt. Modern CAROL record on data.ntsb.gov ↗.

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