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Atlas / NTSB / ANC81IA011

NTSB CAROL · Event

Event ANC81IA011

1980-12-17 DEADHORSE, Alaska, United States Minor 1 aircraft Status: Completed

Registry · N99TF

FAA Aircraft Registry record.

Make / Model

CONSTRUCCIONES AERONAUTICAS SA C-212-CB

Year of manufacture

1977 · 3 years old at event

Engine

AIRESEARCH TPE331-5&6SER (776 hp)

Seats / Engines

19 seats · 2 engines

Last airworthiness date

19780929

ADS-B equipped

Yes — Mode-S ADD1F9

Registrant of record

MEC INTERNATIONAL TRADING LLC

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

C.A.S.A. C-212 · N99TF

Damage

None

Craft type

Airplane

Classification

C

Light condition

Dusk

Weather

VMC

Phase of flight

A1

Operator type

E

Airport

DEADHORSE

Kind of flying

CI

Weather at impact

Sky

CLEAR

Aircraft history

Serial number

000000000089

Pilot

Certificate

ZA (ZA)

Probable cause (from PRE1982.MDB)

OPENED DOOR,DEPLANED BFR PROP STOPPED AT NGT.

Investigator remarks

PAXS BRIEFED,WAIT TIL CREW OPENED FNT DOOR.1 PAX

Cause factors

  • 68/A/K4 A
    PERSONNEL PASSENGER Cause — pilot/personnel action
  • 88/A/10 A
    MISCELLANEOUS ACTS,CONDITIONS INSTRUCTIONS-MISINTERPRETED Cause — pilot/personnel action
  • 68/J/E5 J
    PERSONNEL DEFICIENCY,COMPANY MAINTAINED EQPMT,SERVICES,REGULATION 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 5 0039. Source file NTSB_1980_5_0039.txt. Modern CAROL record on data.ntsb.gov ↗.