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Atlas / NTSB / ANC74DAG50

NTSB CAROL · Event

Event ANC74DAG50

1973-09-03 MCGRATH, Alaska, United States Minor 1 aircraft Status: Completed

Registry · N8889D

FAA Aircraft Registry record.

Make / Model

PIPER PA-18A 150

Seats / Engines

1 seats · 1 engine

ADS-B equipped

Yes — Mode-S AC3F24

Registrant of record

REGISTRATION PENDING

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

PIPER PA-18 · N8889D

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

Cruise — descent (EF)

Operator type

D

Kind of flying

B0

Weather at impact

Sky

CLEAR

Wind

180° / 2 kt

Aircraft history

Serial number

0000018-6358

Total time

3,500 hrs

Pilot

Certificate

Commercial

Total hours

6,400

Age

53

Probable cause (from PRE1982.MDB)

R BANK INTO RIVER. 6 HRS IN TYPE LAST 90 DAYS.

Investigator remarks

PLT MISUSED HEEL BRAKES LDG ON SAND BAR. RAN OVE

Cause factors

  • 64/A/22 A
    PILOT IN COMMAND IMPROPER OPERATION OF BRAKES AND/OR FLIGHT CONTROLS Cause — pilot/personnel action
  • 64/J/31 J
    PILOT IN COMMAND LACK OF FAMILIARITY WITH AIRCRAFT Joint cause
  • 83/J/Y J
    TERRAIN OTHER Joint cause
  • 88/J/88 J
    MISCELLANEOUS ACTS,CONDITIONS AIRCRAFT CAME TO REST IN WATER 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 2886. Source file NTSB_1973_3_2886.txt. Modern CAROL record on data.ntsb.gov ↗.