# NTSB GAA18CA395: Costruzioni Aeronautiche Tecna P2002 Sierra, N75SY, San Carlos, CA, July 5, 2018 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: July 5, 2018, 15:30 local (22:30 UTC) - Place: San Carlos, CA - Coordinates: 37.515277, -122.250274 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=37.5153&lon=-122.2503&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Defining event: [Approach-VFR go-around: Aerodynamic stall/spin](https://openairdocs.org/ntsb-events/241) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report March 18, 2019 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 97709 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA18CA395 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/97709/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=97709 - Page: https://openairdocs.org/ntsb/GAA18CA395 ## Probable cause The pilot’s failure to maintain a proper glidepath and crosswind correction during landing, which resulted in an aerodynamic stall. ## 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: [Costruzioni Aeronautiche Tecna P2002 SIERRA, 7 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=0600006), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Performance/control parameters: descent/approach/glide path](https://openairdocs.org/ntsb-findings/01062040): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Costruzioni Aeronautiche Tecna P2002 SIERRA, 1 case](https://openairdocs.org/ntsb-findings/01062040/cases.md?model=0600006), [All aircraft, 809 cases](https://openairdocs.org/ntsb-findings/01062040/cases.md) - [Performance/control parameters: crosswind correction](https://openairdocs.org/ntsb-findings/01062030): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Costruzioni Aeronautiche Tecna P2002 SIERRA, 1 case](https://openairdocs.org/ntsb-findings/01062030/cases.md?model=0600006), [All aircraft, 184 cases](https://openairdocs.org/ntsb-findings/01062030/cases.md) - [Wind: crosswind](https://openairdocs.org/ntsb-findings/03034040): Environmental issues › Conditions/weather/phenomena · Response/compensation (probable cause); cases with it: [Costruzioni Aeronautiche Tecna P2002 SIERRA, 2 cases](https://openairdocs.org/ntsb-findings/03034040/cases.md?model=0600006), [All aircraft, 1,008 cases](https://openairdocs.org/ntsb-findings/03034040/cases.md) - [Wind: crosswind](https://openairdocs.org/ntsb-findings/03034040): Environmental issues › Conditions/weather/phenomena · Effect on operation; cases with it: [Costruzioni Aeronautiche Tecna P2002 SIERRA, 2 cases](https://openairdocs.org/ntsb-findings/03034040/cases.md?model=0600006), [All aircraft, 1,008 cases](https://openairdocs.org/ntsb-findings/03034040/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Approach-VFR go-around: Aerodynamic stall/spin](https://openairdocs.org/ntsb-events/241) (defining event); cases with it: [Costruzioni Aeronautiche Tecna P2002 SIERRA, 5 cases](https://openairdocs.org/ntsb-events/241/sequence.md?model=0600006), [All aircraft, 1,529 cases](https://openairdocs.org/ntsb-events/241/sequence.md) - [Landing: Landing area undershoot](https://openairdocs.org/ntsb-events/370); cases with it: [Costruzioni Aeronautiche Tecna P2002 SIERRA, 1 case](https://openairdocs.org/ntsb-events/370/sequence.md?model=0600006), [All aircraft, 201 cases](https://openairdocs.org/ntsb-events/370/sequence.md) - [Landing: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Costruzioni Aeronautiche Tecna P2002 SIERRA, 3 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=0600006), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Landing: Landing gear collapse](https://openairdocs.org/ntsb-events/094); cases with it: [Costruzioni Aeronautiche Tecna P2002 SIERRA, 1 case](https://openairdocs.org/ntsb-events/094/sequence.md?model=0600006), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md) - [Landing: Nose over/nose down](https://openairdocs.org/ntsb-events/096); cases with it: [Costruzioni Aeronautiche Tecna P2002 SIERRA, 1 case](https://openairdocs.org/ntsb-events/096/sequence.md?model=0600006), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The pilot reported that, while landing in a crosswind, the approach was "too low," and he added power. The airplane then "rolled and veered" left. He added that marks on the terrain indicated that the left wing struck the ground, and tracks showed that the airplane touched down on the pavement before the runway threshold. The airplane then exited the runway, the nose landing gear collapsed, and the airplane came to rest nose down. The airplane sustained substantial damage to the engine mount, left wing, and fuselage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The automated weather observation system located at the airport reported that, about the time of the accident, the wind was from 330° at 8 knots. The pilot landed the airplane on runway 30. ## Factual narrative The pilot reported that, while landing in a crosswind, the approach was "too low" and he added power. The airplane then "rolled and veered" to the left. He added that marks on the terrain indicated that the left wing struck the ground and tracks showed that the airplane touched down on the pavement before the runway threshold. The airplane then exited the runway, the nose landing gear collapsed and the airplane came to rest nosed down. The airplane sustained substantial damage to the engine mount, left wing and fuselage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The automated weather observation system located at the accident airport reported that, about the time of the accident, the wind was from 330° at 8 knots. The pilot landed on runway 30. ## Aircraft - Registration: [N75SY](https://openairdocs.org/aircraft/N75SY), registered now, S/N 359, built 2008 (OpenAirDocs) - Reported make and model: COSTRUZIONI AERONAUTICHE TECNA P2002 SIERRA - Registry model: [Costruzioni Aeronautiche Tecna P2002 SIERRA](https://openairdocs.org/model/costruzioni-aeronautiche-tecna-p2002-sierra) (registry code 0600006) (OpenAirDocs) - Registry engine: [Rotax 912ULS series](https://openairdocs.org/engine/rotax-912uls-series) (registry code 55572, 4 cycle) (OpenAirDocs) - Category: Airplane - Serial number: 359 - Year built: 2008 - Airframe hours: 355.1 - Engines: Rotax 912ULS 100 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Special, Special light-sport (Special) - Last inspection: Annual, February 15, 2018 - Departed: SQL, San Carlos, CA - Destination: SQL, San Carlos, CA - Airport: SQL, San Carlos, runway 30, 2,600 × 75 ft, asphalt - Equipment: Electronic primary flight display, Handheld GPS, ADS-B, Auto-pilot, Electronic multifunction display ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 72; injuries: none; private; airplane ratings: single-engine land; medical: sport pilot; last flight review July 23, 2016; seat: left; flight hours: 802 total, 277 in this make and model, 802 as pilot in command, 9 in the last 90 days, 3 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 330° at 8 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 73 °F, dew point 54 °F - Altimeter: 30.12 inHg - Observed at: KSQL ## 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 20180705009119A](https://openairdocs.org/incident/20180705009119A), Jul 5, 2018: Costruzioni Aeronautiche Tecna P2002 SIERRA, San Carlos, CA, Substantial damage. San Carlos, CA (sql): N75SY, sira, landed short of the runway under unknown circumstances. POB: 1, injuries: none, damage: extent unknown. 07/05/2018 2200Z ## Docket (2 files) The files NTSB released with the investigation on October 16, 2018, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=97709. 7.2 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 6.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40467408&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Accident Picture (item 2, .PDF, 1 photo, 333 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40467409&FileExtension=.PDF&FileName=Accident%20Picture-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.