Atlas / NTSB / UNK64X1555

NTSB CAROL · Event

Event UNK64X1555

1964-05-02 AVALON BAY, California, United States None 1 aircraft Status: Completed

Registry · N329

FAA Aircraft Registry record.

Make / Model

GRUMMAN G-21A

Year of manufacture

1945 · 19 years old at event

Engine

P&W R-985 SERIES (450 hp)

Seats / Engines

8 seats · 2 engines

Last airworthiness date

19650604

ADS-B equipped

Yes — Mode-S A38FBE

Registrant of record

NICHOLS CHARLES F TRUSTEE

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N329 Grumman G21 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

GRUMMAN G21 · N329

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

EE

Operator type

E

Airport

AVALON BAY

Kind of flying

CI

Pilot

Certificate

D4 (D4)

Total hours

100,000

Age

399

Cause factors

64/A/25 A
PILOT IN COMMAND IMPROPER LEVEL OFF Cause — pilot/personnel action
83/A/G A
TERRAIN ROUGH WATER 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 1129. Source file NTSB_1964_3_1129.txt. Modern CAROL record on data.ntsb.gov ↗.

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