# NTSB CHI02FA074: Cessna 441, N441AR, Winfield, KS, January 30, 2002

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: January 30, 2002, 13:59 local (19:59 UTC)
- Place: Winfield, KS
- Coordinates: 37.135555, -96.901664
- Nearby events: https://openairdocs.org/map.md?lat=37.1356&lon=-96.9017&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report May 30, 2003
- Report: Approved by Office Director
- Parties: Cessna Aircraft Company, FAA, Honeywell
- NTSB case key (mKey): 54098
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI02FA074
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/54098/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=54098
- Page: https://openairdocs.org/ntsb/CHI02FA074

## Probable cause

The pilot's spatial disorientation resulting in a loss of control and collision with the ground.   Additional factors included the pilot operating the airplane with known deficiencies and the instrument flight conditions.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of control - in flight, cruise
  - flight/nav instruments,attitude gyro - unreliable
  - autopilot/flight director - unreliable
  - operation with known deficiencies in equipment - performed, pilot in command (contributing factor)
  - aircraft control - not maintained, pilot in command (cause)
  - weather condition - clouds (contributing factor)
  - spatial disorientation, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

Impact forces and fire destroyed the airplane when it impacted the terrain after a loss of control during cruise flight.  The pilot received a weather brief by AFSS prior to departure concerning the IFR conditions along the route of flight, which included, rain, freezing rain, icing, turbulence, and snow.  The cloud tops were forecast to be 25,000 feet.  The pilot filed a flight plan with a cruise flight level of 28,000 feet.  About 32 minutes after takeoff, at 1345:58, the pilot reported he had an attitude gyro problem and that he was hand flying the airplane.  The airplane's altitude remained at about 28,000 feet for the next seven minutes.  At 1352:46, the pilot stated he had an emergency, but at 1352:53, the pilot stated, "Uh it came back on never mind."  At 1353:26, the pilot stated, "I need to get to uh anywhere I can get a visual."  At 1353:56, the airplane was cleared to climb to 31,000 feet, and radar data indicated the airplane was currently at 27,000 feet.  The radar data indicated the airplane went into a series of steep descents and climbs over the next 4.5 minutes until radar contact was lost at 2,500 feet.  The pilot of a commercial airline who was flying in the same sector as the accident airplane reported that he heard the accident pilot state that he was in a spin.  The commercial airline pilot stated they were flying at 33,000 feet and were "barely above the tops" of the clouds.  The airplane impacted the terrain in a steep nose down attitude and burst into flames.  The engines, flight controls, and flight instruments did not exhibit any pre-existing anomalies.  A witness reported that two days prior to the accident, the pilot had advised him that the airplane's attitude gyro was having problems.  There was no record that the pilot had the attitude gyro inspected prior to the accident.  A witness reported the pilot routinely flew with the autopilot engaged soon after takeoff.  He reported that he had never observed the pilot hand-fly the airplane in instrument conditions.

## Factual narrative

HISTORY OF FLIGHT

On January 30, 2002, at 1359 central standard time, a Cessna 441, N441AR, was destroyed when it impacted terrain in a pasture near Winfield, Kansas.  The private pilot and passenger received fatal injuries.  The 14 CFR Part 91 personal flight departed the Springdale Municipal Airport (ASG), Arkansas, at 1314 en route to the Garfield County Regional Airport (RIL), Rifle, Colorado, on an instrument flight plan.

The pilot received two weather briefings from the Jonesboro Automated Flight Service Station (AFSS) on the day of the accident.  The first weather briefing occurred between 0622 and 0632 and the second between 1130 and 1140.  During the first weather briefing, the AFSS briefer provided the pilot with the current in-flight weather advisories concerning instrument flight (IFR) conditions, mountain obscuration, icing, and turbulence.  The pilot was advised of the rain, freezing rain, and snow along the proposed route of flight.  The pilot inquired about the cloud tops and was briefed that the forecast cloud tops were 25,000 feet.  The pilot filed an IFR flight plan with a cruise flight level of 28,000 feet (FL 280).

At 1133, the pilot called AFSS for a weather update.  The AFSS briefer reported the current weather included a mixture of precipitation that ranged from moderate rain to freezing rain, snow, and an area of freezing rain that extended about 70 miles along the route, and then changed over to snow.  The pilot asked about the location of the freezing level and cloud tops.  The briefer reported that the freezing level was at 12,000 feet across Oklahoma, but there were freezing conditions at the surface with freezing rain.  The briefer indicated the only pilot report he had over northwestern Arkansas was over a hour old and it indicated the top of the first layer was at 8,000 feet, with a higher overcast layer at 9,500 feet with tops 11,000 feet with higher cirraform clouds above.  Over central Oklahoma the clouds tops were in the 11,000 feet - 13,500 feet range based on pilot reports, with cirraform clouds above.

A witness reported that the pilot had checked the weather on the morning of the accident.  He reported that the pilot was aware of the en route weather conditions.  He reported the pilot had said the cloud tops were at 22,000 feet and that he would be flying at 29,000 feet.

N441AR departed ASG at 1314.  At 1326:38, N441AR was cleared to climb to FL 280.  Radar data indicated that N441AR leveled off at FL 280 at 1331:57 on a direct heading of about 288 degrees to RIL.

At 1345:58, N441AR reported to the FAA's Kansas City Air Route Traffic Control Center (ARTCC), "Uh yeah I'm an attitude gyro problem I'm hand flying um might be a few hundred feet deviation here and there."

At 1346:05, The ARTCC position R27 controller asked, "November one alpha romeo roger and you you'll be able to maintain flight level two eight zero correct?"

At 1346:10, N441AR responded, "Yeah I'll be able to maintain it just might be there's nothing wrong here I just want to let you know I might be off a hundred feet here and there."

At 1346:16, R27 stated, "November one alpha romeo roger if you need a block altitude you'll need to advise me if not uh you need to maintain flight level two eight zero."

At 1346:24, N441AR asked, "Two eight zero do you have any blocks?'

At 1346:28, R27 responded, "November one alpha romeo maintain flight level two seven zero through flight level two eight zero."

Radar data indicated that N441AR's altitude remained at FL 280 +/- 100 feet between 1345:58, when N441AR first indicated he was hand flying the airplane, and 1352:30, when R27 asked, "November one alpha romeo you are doing okay with the block altitude there correct?"

At 1352:34, N441AR responded, "I think that will work for me I'm just hand flying it so far it works (laughing).

At 1352:37, R27 stated, "November one alpha romeo roger contact Kansas city center one three three point two and they're uh they're aware that your auto pilot's out."

At 1352:46, N441AR reported, "An four four one alpha romeo I got uh an emergency here."  Radar data indicated that N441AR's had descended to 27,300 feet, but had maintained a northwesterly heading.

At 1352:51, R27 responded, "November one alpha romeo understand you do have an emergency?"

At 1352:53, N441AR reported, "Uh it came back on nevermind."  Radar data indicated that N441AR was in a left turn and its altitude was approximately 27,000 feet."

At 1353:17, N441AR reported, "And uh four four one alpha romeo I need to get to uh anywhere I can get a visual."  Radar data indicated that N441AR's altitude was about 26,500 feet.

At 1353:26, R27 stated, "And November one alpha romeo let me see if I can get a tops report right quick for you there you want to go down."

At 1353:33, N441AR responded, "I'll go up."  Radar data indicated N441AR's altitude was about 26,400 feet and it had turned back to a northwest heading.

At 1353:34, R27 asked, "One alpha romeo you want to go up sir?"

At 1353:36, N441AR responded, "Where it's visual."

At 1353:37, R27 stated, "Okay I think we're blocking each other November one alpha romeo do you wish to climb sir?"

At 1353:42, N441AR responded, "Uh unless there is any vfr below anywhere."

At 1353:51, R27 stated, "I'm not aware of any here just a second."

At 1353:51, R27 stated, "One alpha romeo climb and maintain flight level three one zero."

At 1353:56, N441AR responded, "Three one zero alpha romeo."  Radar data indicated N441AR's altitude was about 27,000 feet.

At 1354:44, N441AR transmitted, "What's my airspeed?"

At 1354:46, N441AR transmitted, "I got to pull up I got to pull up baby."  Radar data indicated that N441AR's altitude was approximately 19,000 feet.

At 1354:56, N441AR transmitted, "I need to go up need to go up."  Radar data indicated that N441AR's altitude was approximately 18,000 feet.

At 1354:58, N441AR transmitted, "What do I do?"

At 1354:59, N441AR transmitted, "You're okay you're okay."

At 1355:00, N441AR transmitted, "We're headings headings okay now."

At 1355:03, N441AR transmitted, "Our heading up just pull it up."

At 1355:29, radar data indicated that N441AR's altitude was about 21,300 feet.

At 1355:34, R27 stated, "November one alpha romeo are you doing okay now?"

At 1355:37, N441AR responded, "I'm gonna I'm having trouble maintaining this level here."  Radar data indicated that N441AR's altitude was approximately 18,000.

At 1355:43, R27 stated, "November one alpha romeo can you give me your altitude now sir?"

At 1355:45, N441AR responded, "Teen thousand."

At 1355:47, R27 stated, "Eighteen thousand."

At 1356:19, R27 asked, "November one alpha romeo are uh you still with me?"  Radar data indicated that N441AR's altitude was about 15,000 feet.

At 1356:21, N441AR stated, "Yep."

At 1356:22, radar data indicated that N441AR's altitude was about 14,500 feet.

At 1356:29, N441AR transmitted, "We're back up."

At 1356:33, N441AR stated, "No gyro for one alpha romeo quickly no gyro headings for alpha romeo."  Radar data indicated that N441AR's altitude was about 16,800 feet.

At 1356:38, R27 stated, "November one alpha romeo."

At 1356:40, N441AR stated, "Give me a no gyro for one alpha romeo quickly."

At 1356:43, R27 stated, "Okay November one alpha romeo just fly your present heading present heading will be just fine."

At 1356:47, N441AR stated, "Left or right."

At 1356:51, R27 stated, "November one alpha romeo just present heading uh no turns now just present heading."  Radar data indicated that N441AR's altitude was about 13,700 feet.

At 1356:58, N441AR stated, "Okay now I got it."

At 1357:40, R27 asked, "November one alpha romeo how do you hear center?"  Radar data indicated that N441AR's altitude was about 7,600 feet.

At 1358:08, N441AR stated, "Romeo give me."  There were no further recorded rad

## Aircraft

- Registration: [N441AR](https://openairdocs.org/deregistered/N441AR-2017-06-14), registration cancelled 2017-06-14, S/N 441-0148 (OpenAirDocs)
- Reported make and model: Cessna 441
- Registry model: [Cessna 441](https://openairdocs.org/model/cessna-441) (registry code 2076020) (OpenAirDocs)
- Category: Airplane
- Serial number: 441-0148
- Airframe hours: 3529.9
- Engines: Honeywell TPE-331-10N 635 horsepower turbo prop
- Damage: Destroyed
- Fire: On-Ground
- Flight: Business, Part 91
- Registered owner: Chrysalis, Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: Continuous airworthiness, May 13, 2001, 54.8 hours before
- Departed: ASG, SPRINGDALE, AR
- Destination: RIL, RIFLE, CO
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 60; injuries: fatal; private; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; seat: left; toxicology performed; flight hours: 1,500 total

## Weather

- Conditions: Instrument (IMC), Day
- Wind: 10° at 15 knots
- Visibility: 1.75 statute miles
- Lowest ceiling: 1,400 ft overcast
- Temperature: 23 °F, dew point 21 °F
- Altimeter: 30.04 inHg
- Observed at: ICT, 37 nm away

## 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 20020130002359A](https://openairdocs.org/incident/20020130002359A), Jan 30, 2002: Cessna 441, Winfield, KS, No damage, 2 fatal. (.19) On January 30, 2002, at 1359 central standard time, a Cessna 441, conquest ii, N441AR, was destroyed when it impacted terrain in a pasture near Winfield,…

## Docket (55 files)

The files NTSB released with the investigation on April 21, 2003, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=54098. 67.9 MB in all.

- Supplement C (item 1, .PDF, 253 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180822&FileExtension=.PDF&FileName=Supplement%20C-Master.PDF
- Supplement D (item 2, .PDF, 302 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180823&FileExtension=.PDF&FileName=Supplement%20D-Master.PDF
- Meteorology 5 - Factual Report of Group Chairman (item 3, .PDF, 315 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40160832&FileExtension=.PDF&FileName=Meteorology%205%20-%20Factual%20Report%20of%20Group%20Chairman-Master.PDF
- Meteorology Factual Report - Attachments 1-17 (item 4, .PDF, 19.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40384047&FileExtension=.PDF&FileName=Meteorology%20Factual%20Report%20-%20Attachments%201-17-Redacted.PDF
- Materials Laboratory Factual Report (item 5, .PDF, 134 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180825&FileExtension=.PDF&FileName=Materials%20Laboratory%20Factual%20Report-Master.PDF
- Recorded Aircraft Radar Study (item 6, .PDF, 12.5 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40384049&FileExtension=.PDF&FileName=Recorded%20Aircraft%20Radar%20Study-Redacted.PDF
- Record of Interview (item 7, .PDF, 491 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40384050&FileExtension=.PDF&FileName=Record%20of%20Interview-Redacted.PDF
- Map of Accident Site and Wreckage Diagram (item 8, .PDF, 139 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180828&FileExtension=.PDF&FileName=Map%20of%20Accident%20Site%20and%20Wreckage%20Diagram-Master.PDF
- ATC Transcripts (item 9, .PDF, 806 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40384051&FileExtension=.PDF&FileName=ATC%20Transcripts-Redacted.PDF
- NTSB Medical Officer Pertinent Medical Information (item 10, .PDF, 132 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180830&FileExtension=.PDF&FileName=NTSB%20Medical%20Officer%20Pertinent%20Medical%20Information-Master.PDF
- Pilot Flight Training Records (item 11, .PDF, 1.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40384053&FileExtension=.PDF&FileName=Pilot%20Flight%20Training%20Records-Redacted.PDF
- Honeywell Protocol For Inspection of Pilot's Gyro Horizon Indicator (item 12, .PDF, 242 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40384054&FileExtension=.PDF&FileName=Honeywell%20Protocol%20For%20Inspection%20of%20Pilot%27s%20Gyro%20Horizon%20Indicator-Redacted.PDF
- Instrument Panel Diagram (item 13, .PDF, 81 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180833&FileExtension=.PDF&FileName=Instrument%20Panel%20Diagram-Master.PDF
- CD Information (item 14, .PDF, 18 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40181536&FileExtension=.PDF&FileName=CD%20Information-Master.PDF
- Toxicological Reports (item 15, .PDF, 101 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40384055&FileExtension=.PDF&FileName=Toxicological%20Reports-Redacted.PDF
- Statement of Party Representatives to NTSB Investigation (item 16, .PDF, 315 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40384058&FileExtension=.PDF&FileName=Statement%20of%20Party%20Representatives%20to%20NTSB%20Investigation-Redacted.PDF
- Release of Aircraft Wreckage, NTSB Form 6120.15 (item 17, .PDF, 138 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40384059&FileExtension=.PDF&FileName=Release%20of%20Aircraft%20Wreckage,%20NTSB%20Form%206120.15-Redacted.PDF
- Photo 1. Main Wreckage Viewed To The West (item 18, .PDF, 886 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180837&FileExtension=.PDF&FileName=Photo%201.%20%20Main%20Wreckage%20Viewed%20To%20The%20West-Master.PDF
- Photo 2. Main Wreckage (item 19, .PDF, 910 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180838&FileExtension=.PDF&FileName=Photo%202.%20%20Main%20Wreckage-Master.PDF
- Photo 3. Right Wing and Engine (item 20, .PDF, 913 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180839&FileExtension=.PDF&FileName=Photo%203.%20%20Right%20Wing%20and%20Engine-Master.PDF
- Photo 4. Right Engine and Propeller and Bottom of Tailcone (item 21, .PDF, 81 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180840&FileExtension=.PDF&FileName=Photo%204.%20%20Right%20Engine%20and%20Propeller%20and%20Bottom%20of%20Tailcone-Master.PDF
- Photo 5. Right Engine and Propeller and Bottom of Tailcone (item 22, .PDF, 81 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180841&FileExtension=.PDF&FileName=Photo%205.%20%20Right%20Engine%20and%20Propeller%20and%20Bottom%20of%20Tailcone-Master.PDF
- Photo 6. Left Engine (item 23, .PDF, 77 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180842&FileExtension=.PDF&FileName=Photo%206.%20%20Left%20Engine-Master.PDF
- Photo 7. Bottom of the Leading Edge of the Right Wing (item 24, .PDF, 83 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180843&FileExtension=.PDF&FileName=Photo%207.%20%20Bottom%20of%20the%20Leading%20Edge%20of%20the%20Right%20Wing-Master.PDF
- Photo 8. View of the Left Wing and Left Engine Nacelle (item 25, .PDF, 912 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180844&FileExtension=.PDF&FileName=Photo%208.%20%20View%20of%20the%20Left%20Wing%20and%20Left%20Engine%20Nacelle-Master.PDF
- Photo 9. View of the Main Wreckage Looking to the Southeast (item 26, .PDF, 934 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180845&FileExtension=.PDF&FileName=Photo%209.%20%20View%20of%20the%20Main%20Wreckage%20Looking%20to%20the%20Southeast-Master.PDF
- Photo 10. Right Wing Top Surface Panel (item 27, .PDF, 929 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180846&FileExtension=.PDF&FileName=Photo%2010.%20%20Right%20Wing%20Top%20Surface%20Panel-Master.PDF
- Photo 11. Left Wing Lower Surface Panel (item 28, .PDF, 909 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180867&FileExtension=.PDF&FileName=Photo%2011.%20%20Left%20Wing%20Lower%20Surface%20Panel-Master.PDF
- Photo 12. Bottom Side of the Left Wing (item 29, .PDF, 903 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180868&FileExtension=.PDF&FileName=Photo%2012.%20%20Bottom%20Side%20of%20the%20Left%20Wing-Master.PDF
- Photo 13. Left Propeller (item 30, .PDF, 922 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180869&FileExtension=.PDF&FileName=Photo%2013.%20%20Left%20Propeller-Master.PDF
- Photo 14. Blade 1, Left Propeller (item 31, .PDF, 924 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180870&FileExtension=.PDF&FileName=Photo%2014.%20%20Blade%201,%20Left%20Propeller-Master.PDF
- Photo 15. Blade 2, Left Propeller (item 32, .PDF, 912 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180871&FileExtension=.PDF&FileName=Photo%2015.%20%20Blade%202,%20Left%20Propeller-Master.PDF
- Photo 16. Blade 1, Right Propeller (item 33, .PDF, 929 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180873&FileExtension=.PDF&FileName=Photo%2016.%20%20Blade%201,%20Right%20Propeller-Master.PDF
- Photo 17. Blade 2, Right Propeller (item 34, .PDF, 920 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180874&FileExtension=.PDF&FileName=Photo%2017.%20%20Blade%202,%20Right%20Propeller-Master.PDF
- Photo 18. Blade 3, Right Propeller (item 35, .PDF, 856 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180875&FileExtension=.PDF&FileName=Photo%2018.%20%20Blade%203,%20Right%20Propeller-Master.PDF
- Photo 19. Blade 4, Right Propeller (item 36, .PDF, 877 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180876&FileExtension=.PDF&FileName=Photo%2019.%20%20Blade%204,%20Right%20Propeller-Master.PDF
- Photo 20. Airspeed Indicator Face (item 37, .PDF, 868 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180878&FileExtension=.PDF&FileName=Photo%2020.%20%20Airspeed%20Indicator%20Face-Master.PDF
- Photo 21. Power Quadrant (item 38, .PDF, 902 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180879&FileExtension=.PDF&FileName=Photo%2021.%20%20Power%20Quadrant-Master.PDF
- Photo 22. Elevator Trim Chain Inside Power Quadrant (item 39, .PDF, 401 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180881&FileExtension=.PDF&FileName=Photo%2022.%20%20Elevator%20Trim%20Chain%20Inside%20Power%20Quadrant-Master.PDF
- Photo 23. Elevator Trim Actuators (item 40, .PDF, 890 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180898&FileExtension=.PDF&FileName=Photo%2023.%20%20Elevator%20Trim%20Actuators-Master.PDF
- Photo 24. Copilot's Yoke (item 41, .PDF, 930 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180901&FileExtension=.PDF&FileName=Photo%2024.%20%20Copilot%27s%20Yoke-Master.PDF
- Photo 25. Pilot's Yoke (item 42, .PDF, 369 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180903&FileExtension=.PDF&FileName=Photo%2025.%20%20Pilot%27s%20Yoke-Master.PDF
- Photo 26. Pilot's HSI Gyro NSD 360 Capsule (item 43, .PDF, 117 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180906&FileExtension=.PDF&FileName=Photo%2026.%20%20Pilot%27s%20HSI%20Gyro%20NSD%20360%20Capsule-Master.PDF
- Photo 27. Pilot's HSI Gyro Housing (item 44, .PDF, 112 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180908&FileExtension=.PDF&FileName=Photo%2027.%20%20Pilot%27s%20HSI%20Gyro%20Housing-Master.PDF
- Photo 28. Pilot's HSI Gyro (item 45, .PDF, 114 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180909&FileExtension=.PDF&FileName=Photo%2028.%20%20Pilot%27s%20HSI%20Gyro-Master.PDF
- Photo 29. Burned and Charred Components of Pilot's Attitude Gyro (item 46, .PDF, 163 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180912&FileExtension=.PDF&FileName=Photo%2029.%20%20Burned%20and%20Charred%20Components%20of%20Pilot%27s%20Attitude%20Gyro-Master.PDF
- Photo 30. Ring Housing of Pilot's Attitude Gyro (item 47, .PDF, 141 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180914&FileExtension=.PDF&FileName=Photo%2030.%20%20Ring%20Housing%20of%20Pilot%27s%20Attitude%20Gyro-Master.PDF
- Photo 31. Pilot's Attitude Gyro. Electric Gyro. Improperly Photographed With HSI Data Plate and Label (item 48, .PDF, 115 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180916&FileExtension=.PDF&FileName=Photo%2031.%20%20Pilot%27s%20Attitude%20Gyro.%20%20Electric%20Gyro.%20%20Improperly%20Photographed%20With%20HSI%20Data%20Plate%20and%20Label-Master.PDF
- Photo 32. Copilot's Directional Gyro Housing (item 49, .PDF, 113 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180918&FileExtension=.PDF&FileName=Photo%2032.%20%20Copilot%27s%20Directional%20Gyro%20Housing-Master.PDF
- Photo 33. Copilot's Directional Gyro (item 50, .PDF, 96 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180920&FileExtension=.PDF&FileName=Photo%2033.%20%20Copilot%27s%20Directional%20Gyro-Master.PDF
- Photo 34. Burned and Charred Copilot's Gyro and Housing (item 51, .PDF, 140 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180922&FileExtension=.PDF&FileName=Photo%2034.%20%20Burned%20and%20Charred%20Copilot%27s%20Gyro%20and%20Housing-Master.PDF
- Photo 35. Copilot's Charred Attitude Gyro and Housing (item 52, .PDF, 106 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180923&FileExtension=.PDF&FileName=Photo%2035.%20%20Copilot%27s%20Charred%20Attitude%20Gyro%20and%20Housing-Master.PDF
- Photo 36. Copilot's Attitude Gyro and Housing Base (item 53, .PDF, 101 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40180924&FileExtension=.PDF&FileName=Photo%2036.%20%20Copilot%27s%20Attitude%20Gyro%20and%20Housing%20Base-Master.PDF
- Honeywell Teardown Report of Two Model TPI331-10N turpoprop Engines (item 54, .PDF, 10.4 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40185064&FileExtension=.PDF&FileName=Honeywell%20Teardown%20Report%20of%20Two%20Model%20TPI331-10N%20turpoprop%20Engines-Master.PDF
- Teardown Report of One Honeywell Inc. Gyro Horizon Indicator, Model GH-14 (item 55, .PDF, 1.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40185090&FileExtension=.PDF&FileName=Teardown%20Report%20of%20One%20Honeywell%20Inc.%20Gyro%20Horizon%20Indicator,%20Model%20GH-14-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.