Atlas / NTSB / CHI74FEP41

NTSB CAROL · Event

Event CHI74FEP41

1974-04-15 WAUNAKEE, Wisconsin, United States None 1 aircraft Status: Completed

Registry · N9621L

FAA Aircraft Registry record.

Make / Model

GRUMMAN AMERICAN AA-1B

Engine

LYCOMING 0-235 SERIES (115 hp)

Seats / Engines

2 seats · 1 engine

Last airworthiness date

19730320

ADS-B equipped

Yes — Mode-S AD661A

Registrant of record

DUNLAY JERRY A

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N9621L AMER AVCO AA-1B 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

AMER AVCO AA-1B · N9621L

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Night

Weather

VMC

Phase of flight

EB

Operator type

Personal/private

Airport

WAUNAKEE

Kind of flying

A3

Weather at impact

Sky

OVERCAST

Wind

340° / 5 kt

Temp

52° F

Aircraft history

Serial number

000AA1B-0121

Total time

430 hrs

Pilot

Certificate

Flight instructor (CFI)

Total hours

215

Age

30

Probable cause (from PRE1982.MDB)

SS AREA BFR RWY.NO ROAD WARNING SIGN.

Investigator remarks

DARK GREEN AUTO,GRASS BACKGROUND.ACFT T/D ON GRA

Cause factors

66/C/48 C
DUAL STUDENT Cause
64/C/30 C
PILOT IN COMMAND INADEQUATE SUPERVISION OF FLIGHT Cause
64/B/15 B
PILOT IN COMMAND FAILED TO SEE AND AVOID OBJECTS OR OBSTRUCTIONS
68/B/K5 B
PERSONNEL DRIVER OF VEHICLE
88/L/79 L
MISCELLANEOUS ACTS,CONDITIONS SUNGLARE

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 0884. Source file NTSB_1974_3_0884.txt. Modern CAROL record on data.ntsb.gov ↗.

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