Atlas / NTSB / OAK74FVG34

NTSB CAROL · Event

Event OAK74FVG34

1974-03-23 DAVIS, California, United States None 1 aircraft Status: Completed

Registry · N4970Y

FAA Aircraft Registry record.

Make / Model

STODDARD HAMILTON GLASTAR

Year of manufacture

2002

Engine

SUBARU ALL MDLS A/B (400 hp)

Seats / Engines

2 seats · 1 engine

Last airworthiness date

20021013

ADS-B equipped

Yes — Mode-S A62C88

Registrant of record

YAMOKOSKI WILLIAM

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N4970Y Piper PA-25 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

PIPER PA-25 · N4970Y

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

Cruise — descent (EF)

Operator type

Part 135 (air taxi/commuter)

Kind of flying

CB

Weather at impact

Sky

CLEAR

Aircraft history

Serial number

0000025-4773

Total time

2,377 hrs

Pilot

Certificate

Commercial

Total hours

13,220

Age

43

Investigator remarks

BRAKES FADED LDG ON ROUGH GRAVEL ROAD.

Cause factors

64/C/79 C
PILOT IN COMMAND FAILED TO MAINTAIN DIRECTIONAL CONTROL Cause
70/L/CJ L
AIRFRAME BRAKING SYSTEM (NORMAL SYSTEM)
88/L/BR L
MISCELLANEOUS ACTS,CONDITIONS ERRATIC
64/L/35 L
PILOT IN COMMAND SELECTED UNSUITABLE TERRAIN
83/L/F L
TERRAIN ROUGH/UNEVEN

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 0475. Source file NTSB_1974_3_0475.txt. Modern CAROL record on data.ntsb.gov ↗.

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