# NTSB CEN20LA083: Piaggio P180, N677P, Broomfield, CO, February 13, 2020 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 3 · Limited · Final report - Date: February 12, 2020, 21:15 local (Feb 13, 2020, 04:15 UTC) - Place: Broomfield, CO - Coordinates: 39.93111, -105.120002 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=39.9311&lon=-105.1200&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300) - Highest injury: No injuries - Injuries: 4 uninjured - Status: Completed - Report: Approved by Office Director - Investigation class: Class 3 - NTSB office: Central Region - Parties: FAA Flight Standards District Office - NTSB case key (mKey): 100945 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN20LA083 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/100945/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=100945 - Page: https://openairdocs.org/ntsb/CEN20LA083 ## Probable cause The pilot’s loss of directional control on the snow-covered runway, which resulted in a runway excursion. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Piaggio P180, 1 case](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=6960204), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Runway/land/takeoff/taxi surface: snow/slush/ice covered surface](https://openairdocs.org/ntsb-findings/03023015): Environmental issues › Physical environment · Effect on operation (probable cause); cases with it: [Piaggio P180, 1 case](https://openairdocs.org/ntsb-findings/03023015/cases.md?model=6960204), [All aircraft, 219 cases](https://openairdocs.org/ntsb-findings/03023015/cases.md) - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Piaggio P180, 1 case](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=6960204), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Performance/control parameters: surface speed/braking](https://openairdocs.org/ntsb-findings/01062045): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Piaggio P180, 1 case](https://openairdocs.org/ntsb-findings/01062045/cases.md?model=6960204), [All aircraft, 238 cases](https://openairdocs.org/ntsb-findings/01062045/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300) (defining event); cases with it: [Piaggio P180, 3 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=6960204), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) ## Analysis The private pilot was making an instrument approach at night in instrument meteorological conditions. The control tower advised that packed snow and moderate braking were reported on the runway. The pilot reported that the approach was on speed and the airplane initially touched down smoothly. When the nosewheel touched down, the airplane yawed to the left, and the pilot’s efforts to maintain directional control were not successful. The airplane slid on the surface, departed the left side of the runway, and spun around, then the right wing tip and canard contacted the ground, resulting in substantial damage to the right wing, canard, and aileron. Postaccident examination revealed both nose gear tires were deflated, and the right main tire had low air pressure. However, the pilot did not report any pre-accident mechanical malfunction or anomaly with the airplane that may have precluded normal operation. ## Factual narrative On February 12, 2020, about 2115 mountain standard time, a Piaggio P180, N677P, went off the left side of runway 30R after landing at Rocky Mountain Metropolitan Airport (BJC), Broomfield, Colorado. The private pilot and his three passengers were not injured. The airplane was substantially damaged. The airplane was registered to JMC Air, LLC, Dillsburgh, Pennsylvania, and operated by the pilot under Title 14 Code of Federal Regulations Part 91 as a business flight. Night instrument meteorological conditions prevailed, and an instrument flight rules flight plan had been filed. The flight originated from Bob Hope Airport (BUR), Burbank, California, at 1745 Pacific standard time, and was destined for BJC. According to the pilot's statement, the control tower advised that there was packed snow on the runway and moderate braking was reported. The approach was made at 130 knots (Vref +10). He observed the runway lights at 6,800 ft and touched down smoothly about 112 knots. When the nose wheel touched down, the airplane yawed to the left. Right rudder was applied, but the airplane continued to drift left of centerline. Both propellers were in beta range, and he placed the right propeller into reverse in an attempt to move the nose to the right. Brakes were also applied but to no avail. The airplane slid on the surface and departed the left side of the runway and skidded through the snow. The airplane spun in the snow and the right wing tip and canard contacted the ground. Post-accident examination revealed both nose gear tires were deflated and the right main tire was low on air. The right aileron was also damaged. The pilot did not report any pre-accident mechanical malfunction or anomaly with the airplane that may have contributed to the accident. ## Aircraft - Registration: [N677P](https://openairdocs.org/aircraft/N677P), registered now, S/N 1019, built 1992 (OpenAirDocs) - Reported make and model: Piaggio P180 (AVANTI) - Registry model: [Piaggio P180](https://openairdocs.org/model/piaggio-p180) (registry code 6960204) (OpenAirDocs) - Registry engine: [Pratt & Whitney PT6A series](https://openairdocs.org/engine/pratt-whitney-pt6a-series) (registry code 52032, turbo-prop) (OpenAirDocs) - Category: Airplane - Serial number: 1019 - Year built: 1992 - Airframe hours: 5256 - Engines: Pratt & Whitney PT6-66 800 horsepower turbo prop; Pratt & Whitney PT6A SER 800 horsepower turbo prop - Damage: Substantial damage - Flight: Business, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, March 19, 2019 - Departed: BUR, Burbank, CA - Destination: BJC, Broomfield, CO - Flight plan: IFR - Airport: BJC, Rocky Mountain Metropolitan, runway 30R, 9,000 × 100 ft, concrete - Equipment: Electronic primary flight display, Onboard weather, Stall warning system, ADS-B, Auto-pilot, Electronic flight bag or handheld device, Electronic multifunction display ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 40; injuries: none; private; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 3, without waivers/limitations; last flight review January 22, 2020; seat: left; flight hours: 1,829 total, 38 in this make and model, 1,704 as pilot in command, 36 in the last 90 days, 31 in the last 30 days ## Weather - Conditions: Instrument (IMC), Night - Wind: 40° at 5 knots - Visibility: 1 statute miles - Lowest ceiling: 600 ft overcast - Temperature: 23 °F, dew point 21 °F - Altimeter: 30.04 inHg - Observed at: BJC ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 20200212004029A](https://openairdocs.org/incident/20200212004029A), Feb 12, 2020: Piaggio P180, Broomfield, CO, Substantial damage. The aircraft departed burbank at approximately 1745 PST. It was originally scheduled to depart at 1430 PST, but the PIC decided to delay for a few hours to see… ## Docket (8 files) The files NTSB released with the investigation on April 3, 2020, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=100945. 2.6 MB in all. - NTSB Form 6120.1-2, Pilot-Operator Aircraft Accident-Incident Report (item 1, .PDF, 858 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40481931&FileExtension=.PDF&FileName=NTSB%20Form%206120.1-2,%20Pilot-Operator%20Aircraft%20Accident-Incident%20Report-Master.PDF - Pilot's Statement to FAA (item 2, .PDF, 56 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40481932&FileExtension=.PDF&FileName=Pilot%27s%20Statement%20to%20FAA-Master.PDF - E-Mails from Pilot (item 3, .PDF, 93 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40481933&FileExtension=.PDF&FileName=E-Mails%20from%20Pilot-Master.PDF - FAA Braking Action Report (item 4, .PDF, 213 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40481934&FileExtension=.PDF&FileName=FAA%20Braking%20Action%20Report-Master.PDF - Coinversation with Rocky Mountain Metropolitan Airport Operations (item 5, .PDF, 52 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40481935&FileExtension=.PDF&FileName=Coinversation%20with%20Rocky%20Mountain%20Metropolitan%20Airport%20Operations-Master.PDF - Rocky Mountain Metropolitan Airport (BJC) Diagram (item 6, .PDF, 156 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40481936&FileExtension=.PDF&FileName=Rocky%20Mountain%20Metropolitan%20Airport%20(BJC)%20Diagram-Master.PDF - Weather Reports (item 7, .PDF, 39 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40481937&FileExtension=.PDF&FileName=Weather%20Reports-Master.PDF - Report Photos (item 8, .PDF, 1.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40481938&FileExtension=.PDF&FileName=Report%20Photos-Master.PDF From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.