Atlas / NTSB / OAK67A0063

NTSB CAROL · Event

Event OAK67A0063

1967-02-21 TAHOE VALLEY, California, United States Fatal 1 aircraft Status: Completed

Registry · N616R

FAA Aircraft Registry record.

Make / Model

ROBINSON HELICOPTER R44 II

Year of manufacture

2005

TCDS

H11NM · ROBINSON HELICOPTER CO

Engine

LYCOMING IO-540 SER (300 hp)

Seats / Engines

4 seats · 1 engine

Last airworthiness date

20050621

ADS-B equipped

Yes — Mode-S A8067F

Registrant of record

HANGAR 21 AVIATION INC

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N616R AERO COMDR 560-E Fatal

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

AERO COMDR 560-E · N616R

Damage

Destroyed

Craft type

Airplane

Classification

Accident

Light condition

Night

Weather

VMC

Phase of flight

Cruise — level (EA)

Operator type

Business

Airport

LAKE TAHOE

Kind of flying

B0

Weather at impact

Sky

CLEAR

Wind

180° / 4 kt

Temp

28° F

Aircraft history

Total time

2,327 hrs

Pilot

Certificate

Flight instructor (CFI)

Total hours

1,035

Age

22

Probable cause (from PRE1982.MDB)

DUE TO BROKEN PALLS.67 HRS ON MAG SINCE OVERHAUL.

Investigator remarks

RT ENG FAILED.IMPULSE COUPLING CAM ASSY FAILURE

Cause factors

74/C/BA C
POWERPLANT MAGNETOS Cause
88/C/36 C
MISCELLANEOUS ACTS,CONDITIONS FATIGUE FRACTURE Cause
64/B/16 B
PILOT IN COMMAND FAILED TO OBTAIN/MAINTAIN FLYING SPEED
88/B/07 B
MISCELLANEOUS ACTS,CONDITIONS IMPROPER EMERGENCY PROCEDURES

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 2 1083. Source file NTSB_1967_2_1083.txt. Modern CAROL record on data.ntsb.gov ↗.

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