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Atlas / NTSB / GAA18CA422

NTSB CAROL · Event

Event GAA18CA422

2018-07-15 Palmer, Alaska, United States Airport · PAQ None 1 aircraft Status: Completed

Registry · N3982Z

FAA Aircraft Registry record.

Make / Model

PIPER PA-18S-150

Year of manufacture

1963 · 55 years old at event

Engine

LYCOMING 0-320 SERIES (180 hp)

Seats / Engines

2 seats · 1 engine

Last airworthiness date

19670919

ADS-B equipped

Yes — Mode-S A4A337

Registrant of record

DUBIOUS ADVENTURES LLC

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The pilot's failure to maintain pitch control during the landing roll.

Factual narrative

The pilot of the tailwheel equipped airplane reported that, during the landing roll on a soft field runaway, the tail started to lift. He maintained aft pressure on the control stick, but the tail continued to lift, and the airplane nosed over. The airplane sustained substantial damage to the left and right wing lift struts. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The pilot added that the wind was from 110º at 6 knots. The automated weather observation station located on the airport reported that, about the time of the accident, the wind was calm. The pilot landed on runway 16. The pilot of the tailwheel-equipped airplane reported that, during the landing roll on a soft-field runaway, the tail started to lift. He maintained aft pressure on the control stick, but the tail continued to lift, and the airplane nosed over.  The airplane sustained substantial damage to the left and right wing lift struts.  The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The pilot added that the wind was from 110º at 6 knots. The airport’s automated weather observation station reported that, about the time of the accident, the wind was calm. The pilot landed the airplane on runway 16.  Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).

  • C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Pitch control-Not attained/maintained - C
  • C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C

Verbatim from NTSB's published report. Source file NTSB_2018_GAA18CA422.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.