NTSB WPR24LA192 — 2024-05-19 · Twin Bridges, Montana, United States

Current FAA registration · N992BB

Make / Model: SIAI-MARCHETTI SM 1019
Year of manufacture: 1976 · 48 years old at event
Engine: ALLISON 250-B17E (420 hp)
Seats / Engines: 2 seats · 1 engine
Last airworthiness date: 20150711
ADS-B equipped: Yes — Mode-S ADDA2C

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N992BB SIAI-Marchetti SM. 1019 None

Probable cause & findings

The binding of the parking brake cable, which resulted in un-commanded brake application during the landing roll and subsequent nose over.

Factual narrative

The pilot of the tailwheel-equipped airplane reported that shortly after touchdown, during the landing roll, the tail began to rise, and the airplane subsequently nosed over. Skid marks on the runway were consistent with the right main wheel skidding during landing. The airplane sustained substantial damage to the left wing. A postaccident examination of the airplane revealed that the parking brake cable was binding. This binding prevented full travel of the parking brake to the “OFF” position and not fully release, which resulted in un-commanded braking application during landing roll. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

FAA avdata. C = Cause, F = Factor.

— Aircraft-Aircraft systems-Landing gear system-Landing gear brakes system-Malfunction
— Aircraft-Aircraft oper/perf/capability-Aircraft capability-Braking capability-Malfunction

Verbatim from NTSB's published report. Source file NTSB_2024_WPR24LA192.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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