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Atlas / NTSB / CHI71FBD41

NTSB CAROL · Event

Event CHI71FBD41

1970-12-15 ROCKFORD, Illinois, United States None 1 aircraft Status: Completed

Registry · N7064D

FAA Aircraft Registry record.

Make / Model

ROBINSON HELICOPTER R22

Year of manufacture

1999

TCDS

H10WE · ROBINSON HELICOPTER CO

Engine

LYCOMING O&VO-360 SER (180 hp)

Seats / Engines

2 seats · 1 engine

Last airworthiness date

19990216

ADS-B equipped

Yes — Mode-S A96DC0

Registrant of record

LIPPINCOTT DAVID H

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

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

BEECH 60 · N7064D

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

EE

Operator type

E

Airport

GREATER ROCKFORD

Kind of flying

CI

Weather at impact

Sky

OVERCAST

Wind

120° / 7 kt

Temp

34° F

Aircraft history

Serial number

00000000P-27

Total time

351 hrs

Pilot

Certificate

Flight instructor (CFI)

Total hours

10,329

Age

39

Probable cause (from PRE1982.MDB)

HOP MANUAL SAYS LUBE AT 50HRS,GREASE AT 100HRS OPN

Investigator remarks

UP-LOCK BEARING P/N NAS505-6J WOULD NOT ROTATE.S

Cause factors

  • 68/A/D6 A
    PERSONNEL INADEQUATE MAINTENANCE AND INSPECTION Cause — pilot/personnel action
  • 70/A/CM A
    AIRFRAME GEAR LOCKING MECHANISM Cause — pilot/personnel action
  • 88/A/CD A
    MISCELLANEOUS ACTS,CONDITIONS JAMMED Cause — pilot/personnel action
  • 88/A/80 A
    MISCELLANEOUS ACTS,CONDITIONS LACK OF LUBRICATION-SPECIFIC PART,NOT SYSTEM Cause — pilot/personnel action

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 1990. Source file NTSB_1970_3_1990.txt. Modern CAROL record on data.ntsb.gov ↗.

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Related research

What the literature says.

Academic papers and agency reports matching this event's aircraft type. Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.

Browse the full corpus — academia portal ↗