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Atlas / NTSB / SEA71AS040

NTSB CAROL · Event

Event SEA71AS040

1971-04-17 BUTTE, Montana, United States Fatal 1 aircraft Status: Completed

Registry · N123CB

FAA Aircraft Registry record.

Make / Model

CESSNA 172M

Year of manufacture

1973

Engine

LYCOMING 0-320 SERIES (180 hp)

Seats / Engines

4 seats · 1 engine

Last airworthiness date

19731001

ADS-B equipped

Yes — Mode-S A05F0B

Registrant of record

C C FLYING CLUB

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

LEAR JET 24D · N123CB

Damage

Destroyed

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

Marginal VMC

Phase of flight

ED

Operator type

Business

Kind of flying

B0

Weather at impact

Sky

OBSCURATION

Wind

340° / 6 kt

Temp

37° F

Aircraft history

Serial number

0000024D-232

Total time

374 hrs

Pilot

Certificate

Flight instructor (CFI)

Total hours

768

Age

26

Probable cause (from PRE1982.MDB)

BT 8000FT.MTNS OBSC.ARPT BLO MINS.ACFT RCVRD 4/19.

Investigator remarks

HIT MTN,6060FT MSL,APRX 1.6NM FRM VOR,PUBL ALT A

Cause factors

  • 64/A/26 A
    PILOT IN COMMAND IMPROPER IFR OPERATION Cause — pilot/personnel action
  • 82/J/Y J
    WEATHER OTHER Joint cause

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 0059. Source file NTSB_1971_3_0059.txt. Modern CAROL record on data.ntsb.gov ↗.