# NTSB WPR20LA109: Raytheon Hawker 800XP, N100AG, Scottsdale, AZ, March 14, 2020

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Class 3 · Limited · Final report
- Date: March 14, 2020, 16:00 local (23:00 UTC)
- Place: Scottsdale, AZ
- Coordinates: 33.622776, -111.910552 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=33.6228&lon=-111.9106&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Defining event: [Landing-flare/touchdown: Loss of control on ground](https://openairdocs.org/ntsb-events/230)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- Investigation class: Class 3
- NTSB office: Western Pacific Region
- Parties: Federal Aviation Administration
- NTSB case key (mKey): 101077
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR20LA109
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/101077/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=101077
- Page: https://openairdocs.org/ntsb/WPR20LA109

## Probable cause

The pilot’s inability to maintain directional control during landing for undetermined reasons, which resulted in a runway excursion.

## Findings

NTSB's coded findings; those marked are part of the probable cause.

- [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Raytheon HAWKER 800XP, 1 case](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=7150012), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md)
- [Not determined](https://openairdocs.org/ntsb-findings/05000000): Not determined › Not determined · Unknown/Not determined (probable cause); cases with it: [Raytheon HAWKER 800XP, 2 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md?model=7150012), [All aircraft, 2,247 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md)

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Landing-flare/touchdown: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Raytheon HAWKER 800XP, 1 case](https://openairdocs.org/ntsb-events/230/sequence.md?model=7150012), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md)
- [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Raytheon HAWKER 800XP, 3 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=7150012), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md)

## Analysis

The pilot stated that, upon landing, the airplane touched down on the runway centerline with light and variable wind conditions. The pilot recalled that the touchdown felt normal but that, during the landing roll, the airplane began to veer to the right. The pilot added full left rudder, but the airplane continued to veer off the runway surface and encountered large rocks located between the runway and taxiway. A postaccident operational check of the nosewheel steering system revealed no mechanical malfunctions or anomalies that would have precluded normal operation. The left nosewheel tire was not adequately inflated and was worn to the point at which the cord was exposed; the right nosewheel tire was within tolerances. Also, one-third of the rim was absent on the left nosewheel tire outer wheel half. The available evidence precluded a determination of whether the imbalance between the nosewheel tires contributed to the control problem on the runway. It could also not be determined if the left nosewheel tire damage occurred before the touchdown or as a result of the accident sequence.

## Factual narrative

On March 14, 2020, about 1600 mountain standard time, a Raytheon Aircraft Company Hawker 800XP, N100AG, was substantially damaged when it was involved in an accident at Scottsdale Airport, Scottsdale, Arizona. The pilot and copilot were not injured. The airplane was being operated under the provisions of Title 14 Code of Federal Regulations Part 91 as a personal flight. The pilot stated that the flight departed from Roger, Arkansas, about 1315 central standard time (1215 mountain standard time). After an uneventful flight, the airplane touched down on the runway 21 centerline with light and variable wind conditions. The pilot recalled that the touchdown felt normal but that, during the landing roll, the airplane began to veer to the right. The pilot added full left rudder, but the airplane continued to veer off the runway surface and encountered large rocks located between the runway and taxiway. The airplane collided with runway lights and a sign, puncturing the left wing; both engines sustained foreign object damage from the rocks. The pilot thought that the loss of control was a result of the nosewheel steering system not being aligned correctly. A postaccident operational check of the steering system revealed no mechanical malfunctions or anomalies that would have precluded normal operation. The left-side nosewheel tire was not adequately inflated and was worn to the point at which the cord was exposed; the right-side tire was within tolerances. Also, one-third of the rim was absent on the nosewheel left-side outer wheel half. On the basis of the available evidence, a determination could not be made regarding whether the damage occurred before the touchdown or as a result of the accident sequence.

## Aircraft

- Registration: [N100AG](https://openairdocs.org/aircraft/N100AG), registered now, S/N 258747, built 2005 (OpenAirDocs)
- Reported make and model: Raytheon HAWKER 800XP (850XP)
- Registry model: [Raytheon HAWKER 800XP](https://openairdocs.org/model/raytheon-hawker-800xp) (registry code 7150012) (OpenAirDocs)
- Registry engine: [Honeywell TFE731-5BR](https://openairdocs.org/engine/honeywell-tfe731-5br) (registry code 33851, turbo-fan) (OpenAirDocs)
- Category: Airplane
- Serial number: 258747
- Year built: 2005
- Airframe hours: 4823
- Engines: honeywell tfe731-5br-1h 4660 lbs thrust turbo fan; honeywell tfe731-5br-1h 4660 lbs thrust turbo fan
- Damage: Substantial damage
- Flight: Executive/Corporate, Part 91
- Airworthiness certificate: Standard, Normal
- Departed: ROG, Rogers, AR
- Destination: SDL, Scottsdale, AZ
- Flight plan: IFR
- Airport: SDL, Scottsdale, runway 21, 8,249 × 100 ft, asphalt
- Equipment: Stall warning system, Electronic multifunction display, Auto-pilot, Electronic flight bag or handheld device, Data recorder, Electronic primary flight display, ADS-B, Angle of attack indicator

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 61; injuries: none; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, with waivers/limitations; last flight review November 21, 2019; seat: left; restraint: 4-point; flight hours: 9,150 total, 650 in this make and model, 6,786 as pilot in command, 52 in the last 90 days, 15 in the last 30 days
- Co-pilot; age 55; injuries: none; airline transport, commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, without waivers/limitations; last flight review September 14, 2019; seat: right; restraint: 4-point; flight hours: 10,556 total, 52 in the last 90 days, 15 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 70 °F, dew point 43 °F
- Altimeter: 30.05 inHg
- Observed at: SDL

## 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 20200314006559A](https://openairdocs.org/incident/20200314006559A), Mar 14, 2020: Raytheon Aircraft Company HAWKER 800XP, Scottsdale, AZ, Substantial damage. PIC [privacy data omitted] and SIC [privacy data omitted] were returning on an IFR flight plan part 91 from rogers, AR. Prior to landing at sdl the before…

## Docket (4 files)

The files NTSB released with the investigation on June 14, 2022, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=101077. 3.3 MB in all.

- Cockpit voice recorder - specialista��s factual report (item 1, PDF, 7 pages, 192 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=13984009&FileExtension=pdf&FileName=WPR20LA109%20CVR%20Report-Rel.pdf
- Pilot/operator aircraft accident report, NTSB form 6120.1 (item 2, PDF, 9 pages, 2.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=13648371&FileExtension=pdf&FileName=Z%20-%20Attachment%2001%20-%206120%20(9%20pages)_Redacted-Rel.pdf
- Records of conversation (item 3, PDF, 1 page, 98 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=13648582&FileExtension=pdf&FileName=Z%20-%20Attachment%2003%20-%20Record%20of%20Conversations-Rel.pdf
- Photos (item 4, PDF, 2 pages, 208 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=13648702&FileExtension=pdf&FileName=Z-%20Attachment%2002%20-Photos-Rel.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.

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