Atlas / NTSB / SEA79FYM02

NTSB CAROL · Event

Event SEA79FYM02

1978-10-21 HILLSBORO, Oregon, United States None 1 aircraft Status: Completed

Registry · N9721U

FAA Aircraft Registry record.

Make / Model

GRUMMAN AMERICAN AA-5A

Year of manufacture

1976 · 2 years old at event

Engine

LYCOMING 0-320 SERIES (180 hp)

Seats / Engines

4 seats · 1 engine

Last airworthiness date

19760323

ADS-B equipped

Yes — Mode-S AD8DA1

Registrant of record

WOOD LISA L

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N9721U GRUM AMER AA5-A 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

GRUM AMER AA5-A · N9721U

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Night

Weather

VMC

Phase of flight

EB

Operator type

D

Airport

HILLSBORO

Kind of flying

B0

Weather at impact

Sky

CLEAR

Aircraft history

Serial number

000AA5A-0121

Total time

1,793 hrs

Pilot

Certificate

Commercial — instrument

Total hours

132

Age

33

Investigator remarks

CONT APCH & LND OK.

Cause factors

64/C/48 C
PILOT IN COMMAND MISJUDGED DISTANCE AND ALTITUDE Cause
83/K/I K
TERRAIN HIGH OBSTRUCTIONS Joint factor
88/L/22 L
MISCELLANEOUS ACTS,CONDITIONS POORLY PLANNED APPROACH
88/3/AW 3
MISCELLANEOUS ACTS,CONDITIONS FEMALE PILOT Subordinate · 3

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 3180. Source file NTSB_1978_3_3180.txt. Modern CAROL record on data.ntsb.gov ↗.

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