Atlas / NTSB / DEN77FTE32

NTSB CAROL · Event

Event DEN77FTE32

1977-04-08 ENGLEWOOD, Colorado, United States None 1 aircraft Status: Completed

Registry · N93549

FAA Aircraft Registry record.

Make / Model

BELLANCA 17-30A

Engine

CONT MOTOR IO 520 SERIES (285 hp)

Seats / Engines

4 seats · 1 engine

Last airworthiness date

19731009

ADS-B equipped

Yes — Mode-S ACFB42

Registrant of record

STEPHENS NICHOLAS C

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N93549 Bellanca 17-30A 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

BELLANCA 17-30A · N93549

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

Temp

80° F

Aircraft history

Serial number

000074-30624

Total time

395 hrs

Pilot

Certificate

Commercial — instrument

Total hours

174

Age

28

Investigator remarks

#2 CYL VALVES,PISTON FAILED.

Cause factors

74/A/AF A
POWERPLANT VALVE ASSEMBLIES Cause — pilot/personnel action
88/A/95 A
MISCELLANEOUS ACTS,CONDITIONS MATERIAL FAILURE Cause — pilot/personnel action
83/B/F B
TERRAIN ROUGH/UNEVEN
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 0893. Source file NTSB_1977_3_0893.txt. Modern CAROL record on data.ntsb.gov ↗.

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