Atlas / NTSB / FTW77FRJ20

NTSB CAROL · Event

Event FTW77FRJ20

1977-08-30 GILLIAM, Louisiana, United States None 1 aircraft Status: Completed

Registry · N959X

FAA Aircraft Registry record.

Make / Model

AEROVODOCHODY L-29 DELFIN

Year of manufacture

1973 · 4 years old at event

Engine

MOTORLET M-701(SERIES)

Seats / Engines

2 seats · 1 engine

Last airworthiness date

20211115

ADS-B equipped

Yes — Mode-S AD5823

Registrant of record

REGISTRATION PENDING

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N959X Grumman G-164A 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 G-164A · N959X

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

DH

Operator type

Part 135 (air taxi/commuter)

Airport

HOSSTON

Kind of flying

CA

Weather at impact

Sky

SCATTERED-ABOVE 1000 FEET

Wind

360° / 6 kt

Temp

90° F

Aircraft history

Serial number

000000000475

Total time

1,076 hrs

Pilot

Certificate

Commercial

Total hours

1,000

Age

27

Probable cause (from PRE1982.MDB)

OAD JETTISONED.

Investigator remarks

#1 CYL HEAD SEPARATED.BALLOONED INTO WIRE AFTR L

Cause factors

74/C/AD C
POWERPLANT CYLINDER ASSEMBLY Cause
88/C/95 C
MISCELLANEOUS ACTS,CONDITIONS MATERIAL FAILURE Cause
64/B/54 B
PILOT IN COMMAND MISJUDGED CLEARANCE
88/K/24 K
MISCELLANEOUS ACTS,CONDITIONS JETTISONED LOAD 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 2196. Source file NTSB_1977_3_2196.txt. Modern CAROL record on data.ntsb.gov ↗.

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