Atlas / NTSB / FTW80FRA02

NTSB CAROL · Event

Event FTW80FRA02

1979-10-12 COLD SPRING, Texas, United States None 1 aircraft Status: Completed

Registry · N9983U

FAA Aircraft Registry record.

Make / Model

GRUMMAN AMERICAN AA-5A

Seats / Engines

4 seats · 1 engine

Last airworthiness date

19770429

ADS-B equipped

Yes — Mode-S ADF32F

Registrant of record

MOREL MARC G

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N9983U GRUM-AMER AA-5A 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 AA-5A · N9983U

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

D1

Operator type

D

Kind of flying

B0

Weather at impact

Sky

CLEAR

Aircraft history

Serial number

00AA-5A-0383

Total time

572 hrs

Pilot

Certificate

Commercial — instrument

Total hours

149

Age

42

Investigator remarks

#4 CYL EXH VALVE HEAD SEPARATED FROM STEM.

Cause factors

74/C/AF C
POWERPLANT VALVE ASSEMBLIES Cause
88/C/95 C
MISCELLANEOUS ACTS,CONDITIONS MATERIAL FAILURE Cause
83/K/I K
TERRAIN HIGH OBSTRUCTIONS 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 2538. Source file NTSB_1979_3_2538.txt. Modern CAROL record on data.ntsb.gov ↗.

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