Atlas / NTSB / FTW74FRA28

NTSB CAROL · Event

Event FTW74FRA28

1974-02-10 FRIENDSWOOD, Texas, United States None 1 aircraft Status: Completed

Registry · N85166

FAA Aircraft Registry record.

Make / Model

AERONCA 7AC

Year of manufacture

1946 · 28 years old at event

Engine

CONT MOTOR A75-8 (75 hp)

Seats / Engines

2 seats · 1 engine

Last airworthiness date

20170905

ADS-B equipped

Yes — Mode-S ABAE58

Registrant of record

RICHARDSON CHASEN M

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N85166 Aeronca 7AC 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

AERONCA 7AC · N85166

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

Cruise — level (EA)

Operator type

D

Airport

CLOVER FIELD

Kind of flying

B0

Weather at impact

Sky

CLEAR

Aircraft history

Serial number

000000003898

Total time

1,500 hrs

Pilot

Certificate

Commercial — instrument

Total hours

568

Age

54

Probable cause (from PRE1982.MDB)

IT ON RELIEF VALVE PLUNGR

Investigator remarks

ENG NOT LISTD FOR ACFT. LOW OIL PRES. CARB DEPOS

Cause factors

74/C/DC C
POWERPLANT VALVES Cause
84/C/G C
MISCELLANEOUS FOREIGN MATERIAL AFFECTING NORMAL OPERATIONS Cause
88/C/AR C
MISCELLANEOUS ACTS,CONDITIONS CARBON DEPOSITS Cause
88/C/CL C
MISCELLANEOUS ACTS,CONDITIONS PRESSURE TOO LOW Cause
68/L/D6 L
PERSONNEL INADEQUATE MAINTENANCE AND INSPECTION
83/K/A K
TERRAIN WET,SOFT GROUND Joint factor
88/K/94 K
MISCELLANEOUS ACTS,CONDITIONS OVERLOAD FAILURE 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 0158. Source file NTSB_1974_3_0158.txt. Modern CAROL record on data.ntsb.gov ↗.

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