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Atlas / NTSB / SEA76DTI19

NTSB CAROL · Event

Event SEA76DTI19

1976-01-23 MARIAS PASS, Montana, United States None 1 aircraft Status: Completed

Registry · N60131

FAA Aircraft Registry record.

Make / Model

BOEING PT-17

Year of manufacture

1942 · 34 years old at event

Engine

JACOBS L4 /R755-7 (245 hp)

Seats / Engines

2 seats · 1 engine

Last airworthiness date

19560518

ADS-B equipped

Yes — Mode-S A7CDD1

Registrant of record

HORSTMAN EDWARD B

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

STEARMAN PT-17 · N60131

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

D9

Operator type

D

Kind of flying

DD

Weather at impact

Sky

SCATTERED-ABOVE 1000 FEET

Wind

335° / 50 kt

Temp

28° F

Aircraft history

Serial number

0000075-3200

Total time

1,700 hrs

Pilot

Certificate

Commercial — instrument

Total hours

292

Age

35

Probable cause (from PRE1982.MDB)

DIMINISHED.ENCOUNTERED TURBC & DOWNDRAFT.NO RADIO

Investigator remarks

FORECAST HDWINDS & TURBC IN PASS.TKOF WHEN WINDS

Cause factors

  • 64/A/27 A
    PILOT IN COMMAND IMPROPER IN-FLIGHT DECISIONS OR PLANNING Cause — pilot/personnel action
  • 82/A/M A
    WEATHER DOWNDRAFT,UPDRAFTS Cause — pilot/personnel action
  • 82/J/K J
    WEATHER TURBULENCE IN FLIGHT,CLEAR AIR Joint cause
  • 82/J/W J
    WEATHER HIGH DENSITY ALTITUDE Joint cause
  • 83/J/I J
    TERRAIN HIGH OBSTRUCTIONS 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 0179. Source file NTSB_1976_3_0179.txt. Modern CAROL record on data.ntsb.gov ↗.