Atlas / NTSB / OAK73DVW04

NTSB CAROL · Event

Event OAK73DVW04

1972-07-12 BISHOP, California, United States None 1 aircraft Status: Completed

Registry · N4048L

FAA Aircraft Registry record.

Make / Model

EUROCOPTER AS 350 B2

Year of manufacture

1997

TCDS

H9EU · AIRBUS HELICOPTERS

Engine

TURBOMECA ARRIEL 1SER (681 hp)

Seats / Engines

6 seats · 1 engine

Last airworthiness date

19971211

ADS-B equipped

Yes — Mode-S A4BEF8

Registrant of record

U S DEPT OF HOMELAND SECURITY

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N4048L Cessna 421 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 421 · N4048L

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

C0

Operator type

Business

Airport

BISHOP

Kind of flying

B3

Weather at impact

Sky

CLEAR

Temp

92° F

Aircraft history

Serial number

000004210048

Pilot

Certificate

GA (GA)

Total hours

5,000

Age

54

Probable cause (from PRE1982.MDB)

RWY.

Investigator remarks

R MLG TIRE WENT FLAT. VEERED INTO DITCH NEXT TO

Cause factors

64/C/79 C
PILOT IN COMMAND FAILED TO MAINTAIN DIRECTIONAL CONTROL Cause
70/L/CF L
AIRFRAME WHEELS,TIRES,AXLES
88/L/95 L
MISCELLANEOUS ACTS,CONDITIONS MATERIAL FAILURE
80/K/BY K
AIRPORTS/AIRWAYS/FACILITIES OTHER 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 2342. Source file NTSB_1972_3_2342.txt. Modern CAROL record on data.ntsb.gov ↗.

Beyond the agency record

Search this event elsewhere.

Pre-filled searches into the sources where news + community discussion of aviation events lives. External sources are reported, not agency. Treat them as signal that something happened, not as fact about what happened.

TallyAero Live Wire Aviation press

Entity-clustered aviation events in the press — last 24 hr + 30-day archive.

NTSB CAROL Agency ↗

Official agency record + docket.

NTSB Docket Agency ↗

Investigative docket: factual reports, photos, transcripts.

Aviation Safety Network Aviation press ↗

Long-running aviation incident database (Flight Safety Foundation).

Kathryn's Report Aviation press ↗

Community NTSB synthesis blog — often has photos and witness reports.

Aviation Herald Aviation press ↗

Gold-standard aviation incident blog.