- Date
- May 19, 2024, 11:20 local (17:20 UTC)
- Place
- Twin Bridges, MT
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N992BBSIAI Marchetti SM. 1019
- Defining event
- Landing-landing roll: Sys/Comp malf/fail (non-power)
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- Investigation class
- Class 4 - Basic report with no Prelim publish
- NTSB office
- Western Pacific Region
- Parties
- FAA
- FAA report
- 20240519005839A
- Case key
- 194456
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The binding of the parking brake cable, which resulted in un-commanded brake application during the landing roll and subsequent nose over.
Findings · 2
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
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.
Aircraft
- Registration
- N992BB
- Reported as
- SIAI Marchetti SM. 1019
- Category
- Airplane
- Serial number
- 012
- Built
- 1976
- Airframe hours
- 2,765.35
- Engine
- Rolls Royce 250B-17E, 420 horsepower, turbo prop
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- Ruby Valley Aviation LC
- Airworthiness certificate
- Special, Experimental (Special)
- Last inspection
- Condition · January 15, 2024 · 3.6 hours before
- Departed
- EKS · Ennis, MT
- Destination
- Same as departure
- Airport
- RVF · Ruby Valley Field Airport, runway 17, 3,000 × 100 ft, gravel
- Equipment
- Electronic primary flight display, Electronic multifunction display, ADS-B, Stall warning system
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 72
- Injuries
- None
- Certificate
- Private
- Airplane ratings
- Single-engine sea, Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 3, Waiver time limited special
- Last flight review
- September 20, 2023
- Seat
- Front
- Restraint
- 4-point
- Flight hours
- 8,306 total · 460 in this make and model · 8,246 as pilot in command · 39 in the last 90 days · 20.7 in the last 30 days · 2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 270° at 9 knots, gusting 22
- Visibility
- 10 statute miles
- Lowest ceiling
- 6,000 ft broken
- Temperature
- 46 °F, dew point 21 °F
- Altimeter
- 29.91 inHg
- Observed at
- KWYS, 71 nm away
- METAR
- METAR KWYS 191755Z AUTO 27009G22KT 240V320 10SM BKN060 08/M06 A2991 RMK AO2
Docket · 3
The files NTSB released with the investigation on February 11, 2025, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.9 MB in all.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.