Atlas / NTSB / OAK70AP051

NTSB CAROL · Event

Event OAK70AP051

1970-04-18 SAN RAFAEL, California, United States Fatal 1 aircraft Status: Completed

Aircraft involved

N4804V Bellanca 17-30 Fatal

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

BELLANCA 17-30 · N4804V

Damage

Destroyed

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

D9

Operator type

D

Airport

HAMILTON AFB

Kind of flying

B2

Weather at impact

Sky

CLEAR

Temp

65° F

Aircraft history

Serial number

000000030094

Total time

366 hrs

Pilot

Certificate

Commercial — instrument

Total hours

484

Age

32

Probable cause (from PRE1982.MDB)

COCKPIT TAB CTL WAS INOPERATIVE. ACFT PITCHED OVER

Investigator remarks

ELEVATOR TRIM TAB IMPROPERLY ADJUSTED. PLT KNEW

Cause factors

75/A/CC A
SYSTEMS ELEVATOR AND ELEVATOR TAB CONTROL SYSTEM Cause — pilot/personnel action
88/A/47 A
MISCELLANEOUS ACTS,CONDITIONS IMPROPER ALIGNMENT/ADJUSTMENT Cause — pilot/personnel action
68/A/D0 A
PERSONNEL IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL) Cause — pilot/personnel action
64/A/01 A
PILOT IN COMMAND ATTEMPTED OPERATION W/KNOWN DEFICIENCIES IN EQUIPMENT Cause — pilot/personnel action

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 1173. Source file NTSB_1970_3_1173.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.