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Atlas / NTSB / ANC13CA038

NTSB CAROL · Event

Event ANC13CA038

2013-04-15 Port Alsworth, Alaska, United States Airport · AK51 None 1 aircraft Status: Completed

Registry · N1820L

FAA Aircraft Registry record.

Make / Model

BEECH A36

Year of manufacture

1976 · 37 years old at event

Engine

CONT MOTOR IO 520 SERIES (285 hp)

Seats / Engines

6 seats · 1 engine

Last airworthiness date

19760419

ADS-B equipped

Yes — Mode-S A14A7D

Registrant of record

SAFECO LEASING LLC

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The failure of the left main landing gear retraction brace assembly, resulting in the collapse of the left main landing gear.

Factual narrative

The pilot was landing the airplane on a dry, unpaved airstrip, when the left main landing gear retraction brace assembly (PN 35-815125-2) broke, and the left main landing gear collapsed. The airplane sustained substantial damage to the left aileron. The pilot stated that there were no preaccident mechanical anomalies with the airplane. Examination of the airplane's maintenance logbooks revealed no record that the brace assembly had ever been replaced during the airframe's time in service of 19,770 hours. The brace is a on-condition replacement part. The pilot was landing the airplane on a dry, unpaved airstrip, when the left main landing gear retraction brace assembly (PN 35-815125-2) broke, and the left main landing gear collapsed. The airplane sustained substantial damage to the left aileron. The pilot stated that there were no preaccident mechanical anomalies with the airplane. Examination of the airplane's maintenance logbooks revealed no record that the brace assembly had ever been replaced during the airframe's time in service of 19,770 hours. The brace is a on-condition replacement part. 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 systems-Landing gear system-Main landing gear-Failure - C

Verbatim from NTSB's published report. Source file NTSB_2013_ANC13CA038.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

Related research

What the literature says.

Academic papers and agency reports matching this event's aircraft type or causal vocabulary (maintenance). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.

Browse the full corpus — academia portal ↗