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ANC84FA073 · Piper PA-18-150

21 May 1984 · PLATINUM, AK, United States

Piper PA-18-150 and Cessna 180H · Accident: midair collision while maneuvering

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Narrative check · The NTSB narrative appears to contradict this record's aircraft involved and registration. Values are shown as recorded, not corrected; compare with the narrative.

Event

NTSB case
ANC84FA073
Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
Accident
InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
Completed
API-reported fatalities
2 · all aircraft and ground
Ground fatalities
0
OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
General aviation
WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
Visual Meteorological Cond

Aircraft 1 · Piper PA-18-150

Aircraft type
Piper PA-18
Category
Airplane
RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
N82454
Onboard fatalities
Unknown
Route
From ASIGYUGPAK BAY, AKTo not recorded
Aircraft age
Not recorded
Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
Part 91: General Aviation
Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
Maneuvering
First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
Midair collision
DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
Destroyed

Aircraft 2 · Cessna 180H

Aircraft type
Cessna 180
Category
Airplane
RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
N4798U
Onboard fatalities
Unknown
Route
From ASPIGYUGPAK SPI, AKTo not recorded
Aircraft age
Not recorded
Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
Part 91: General Aviation
Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
Maneuvering
First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
Midair collision
DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
Destroyed

Cause areas

  • Pilot in command › Diverted attention
  • Pilot in command › Visual lookout, inadequate
  • Pilot of other aircraft › Diverted attention
  • Pilot of other aircraft › Visual lookout, inadequate

Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.

NTSB narrative

THE HERRING SEASON WAS TO OPEN AT 1600 HRS. ACCORDING TO WITNESSES, ABOUT 30 ACFT WERE CIRCLING IN LEFT TURNS OVER MERGING SCHOOLS OF HERRING WHILE THE PLTS & THEIR RESPECTIVE BOAT CREWS WERE AWAITING THE OPENING SIGNALS. THE ACFT WERE CIRCLING UNDER A LOW OVERCAST WHERE THE HERRING WERE MERGING NEAR A SHORELINE. TWO ACFT (A PIPER PA-18, N82554, & A CESSNA 182H, N4798U) COLLIDED WHILE THE PLTS WERE SPOTTING FISH. OF 6 WITNESSES WHO SAW THE COLLISION 5 AGREED THAT THE CESSNA WAS CONVERGING FROM INSIDE THE RADIUS OF THE PIPER'S TURN. AFTER COLLIDING, BOTH ACFT IMPACTED ON A BLUFF NEAR THE SHORELINE. WITNESSES USED SUCH TERMS AS 'FRANTIC', 'CHAOTIC' & 'INSANE' WHEN THEY DESCRIBED THE FLT ACTIVITY OVER THE FISH AT THE OPENING OF THE HERRING SEASON WITH ITS LUCRATIVE REWARDS.

Verbatim NTSB analysis from the NTSB dataset

Sources

NTSB record ANC84FA073
Event ID
20001214X39439
Case number
ANC84FA073
Dataset
historical-pre2008
Source SHA-256
89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
  • Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
  • Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
  • The date is the local date, which is the same as the UTC date the NTSB stores.
  • API snapshot SHA-256: 20dfb7843e0f8ab17103a309e43d0fbe75bd99f15f020c1c15ca3c16ef43716b; retrieved 2026-09-21T05:31:45.182Z.