Atlas / NTSB / DEN77DTE46

NTSB CAROL · Event

Event DEN77DTE46

1977-05-21 RIFLE, Colorado, United States None 1 aircraft Status: Completed

Registry · N40338

FAA Aircraft Registry record.

Make / Model

ROBINSON HELICOPTER R22 BETA

TCDS

H10WE · ROBINSON HELICOPTER CO

Seats / Engines

2 seats · 1 engine

ADS-B equipped

Yes — Mode-S A4BAA8

Registrant of record

EMERALD CITY AIRCRAFT LEASING INC

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N40338 Maule M4220C 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

MAULE M4220C · N40338

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

Cruise — descent (EF)

Operator type

D

Airport

GARFIELD COUNTY

Kind of flying

B0

Weather at impact

Sky

SCATTERED-ABOVE 1000 FEET

Wind

225° / 10 kt

Aircraft history

Serial number

00000002113C

Total time

532 hrs

Pilot

Certificate

Commercial — instrument

Total hours

248

Age

53

Cause factors

64/C/79 C
PILOT IN COMMAND FAILED TO MAINTAIN DIRECTIONAL CONTROL Cause
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 2060. Source file NTSB_1977_3_2060.txt. Modern CAROL record on data.ntsb.gov ↗.

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