# NTSB CHI98FA349: Beech 58, N4574Q, Oakdale, WI, September 16, 1998 - Type: NTSB accident investigation - Classification: Accident · Fatal · Field investigation · Final report - Date: September 16, 1998, 07:45 local (12:45 UTC) - Place: Oakdale, WI - Coordinates: 43.980991, -90.50077 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=43.9810&lon=-90.5008&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: Fatal - Injuries: 3 fatal - Status: Completed, report November 17, 1999 - Report: Approved by Office Director - ADs cited in the narratives: [AD 98-21-21](https://openairdocs.org/ad/98-21-21) (OpenAirDocs) - NTSB case key (mKey): 43934 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI98FA349 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/43934/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=43934 - Page: https://openairdocs.org/ntsb/CHI98FA349 ## Probable cause The installation of the door seal inflation system by company personnel. An additional cause was the emergency procedures not followed by the pilot-in-command. A contributing factor was the trees. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Miscellaneous/other, cruise - maintenance,installation - improper, company maintenance personnel (cause) - fuselage,cabin - smoke - In flight collision with object, emergency descent/landing - emergency procedure - not followed, pilot in command (cause) - object - tree(s) (contributing factor) ## Analysis At 8,100 feet mean sea level (msl), the pilot reported smoke coming from the aircraft at 0739:32 central daylight time. At 0743:14, the aircraft altitude was 3,000 feet msl. The last received transmission by the pilot was at 0743:01. The Beech 58 Pilot's operating manual, states, under ELECTRICAL SMOKE OR FIRE, that the Battery and Alternator Switches are to be selected in the OFF position. A resistor, similar in size, shape and color to two of the resistors in the door seal inflation system was found attached to the right cabin side wall. The area surrounding the resistor revealed that a black material attached to the interior side wall was absent. There was bubbling of the black material and outside paint. Black material similar to the material on the side wall was also present on the bottom of the resistor. Installation instructions referencing the resistor, state, 'mount to metal structure for heat sink'. An emergency descent from an altitude of 8,000 feet msl was performed in a flight training simulator and a descent rate of approximately 6,200 feet per minute was obtained. A simulated off airport landing, in a simulator, was completed in approximately 02:15 minutes. Airworthiness Directive 98-21-21 has been issued for the deactivating or the removing of all provisions of the inflatable door seal installation. ## Factual narrative HISTORY OF FLIGHT On September 16, 1998, at 0745 central daylight time (cdt), a Beech 58, N4574Q, operated by the State of Wisconsin's Department of Administration (DOA), impacted terrain while diverting to Volk Field (VOK), Camp Douglas, Wisconsin, after the airline transport rated pilot had declared an emergency and reported smoke in the aircraft. The aircraft was destroyed. Visual meteorological conditions prevailed at the time of the accident. The 14 CFR Part 91 business flight was operating on an instrument flight rule (IFR) flight plan. The pilot and two passengers sustained fatal injuries. The flight originated from the Dane County Regional Airport (MSN), Madison, Wisconsin, at 0653, and was en route to the Burnett County Airport (RZN), Siren, Wisconsin. At 0653, the pilot called MSN Clearance Delivery and was issued an IFR clearance to Siren. At 0711, the Local Controller cleared N4574Q for takeoff and told the pilot to contact departure; the pilot contacted Madison Departure Control and was climbed to 6,000 feet without incident or comment from the pilot. At 0737, the pilot checked in again with Minneapolis Center, level at 8,000 feet. The specialist acknowledged and issued the Eau Claire altimeter setting. The specialist instructed the pilot to contact him on frequency 125.3. The pilot of N4574Q advised the Minneapolis Center specialist that this was the frequency he was on. At 0739:32, the pilot transmitted, "minneapolis seven four quebec we're gonna return we're gonna go into ah volk we got some smoke comin outa this thing" At 0739:33, radar data indicated the aircraft's position to be at latitude 44 10'03"N longitude 090 29'25" W or approximately, 11.5 nautical miles (nmi) on a magnetic bearing of 360 degrees from Bloyer Field (Y72) near Tomah, Wisconsin, 16.5 nmi on a magnetic bearing of 041 degrees from Sparta/Fort McCoy (CMY) near Sparta, Wisconsin, 16.8 nmi on a magnetic bearing of 326 degrees from VOK. At 0739:40, Minneapolis Air Route Traffic Control Center (ZMP5R) transmitted, " 'kay ah baron seven four quebec youre cleared to volk field ah left or right turn your discretion ah im showin volk six oclock and ah fifteen miles right now" At 0739:53, the pilot transmitted, "four quebec okay and ah i guess you could declare it as an emergency we're not gonna fool around we got some sm (clipped)" At 0739:59, ZMP5R transmitted, "kay seven four quebec descend at pilots discretion then and maintain ah six thousand and ah is it comin out of an engine" At 0740:05, the pilot transmitted, "no its comin out of a heater it seems" At 0740:29, ZMP5R transmitted, "kay seven four quebec ah descend at pilots discretion maintain four thousand left or right or left turn your discretion reverse course direct volk when youre able" At 0740:44, the pilot transmitted, "and four quebec we're gonna go ahead and head for volk ah we should be pretty much headed right at it now i think" At 0740:50, ZMP5R transmitted, "seven four quebec rodger contact me on one two eight point six for better frequency coverage one two eight point six again i know youre busy sorry about that" At 0740:56, the pilot transmitted, "twenty eight six" At 0740:57, ZMP5R transmitted, "(clipped) k you" At 0741:50, ZMP5R transmitted, "baron seven four quebec report volk field in sight please when youre able" At 0741:53, the pilot transmitted, "four quebec" At 0742"13, ZMP5R transmitted, "baron seven four quebec report volk field in sight please" At 0742:17, the pilot transmitted, "four quebec" At 0742:24, ZMP5R transmitted, "baron seven four quebec contact chicago center now one three three point three thirty three three theyre aware of the situation" At 0742:30, the pilot transmitted, "four quebec" At 0742:57, Chicago Air Route Traffic Control Center transmitted, "november four five seven four quebec chicago" At 0743:01, the pilot transmitted, "seven four quebec go ahead bud" There were no further radio transmissions received by Chicago Air Traffic Control Center, VOK Tower or by aircraft that participated in the communications search after this time. A witness, who also reported that he is a pilot, stated that he heard an aircraft go over his shop at approximately 600 feet above ground level (agl) when dark smoke came out of the centerline of the aircraft. He further stated that the aircraft appeared to be steady with the landing gear up and that it crashed 1-1/2 miles away and was heading in a southwesterly direction. A second witness reported that he saw the aircraft approximately 500 feet to 600 feet agl heading from the northeast to the southwest with the landing gear up. The witness also stated that the aircraft seemed under control when he saw black smoke pouring out of the aircraft's backend. The witness went on to say that the aircraft landed about a mile or more from his house. The wreckage location was located at latitude 43 59.52'N longitude 90 26.25'W or approximately 2.2 nmi on a magnetic bearing of 064 degrees from Y72, 13.1 nmi on a magnetic bearing of 081 degrees from CMY and 13.1 nmi on a magnetic bearing of 295 degrees from VOK. PERSONNEL INFORMATION A search of the pilot's FAA records indicated no history of accidents, incidents, or enforcement actions. The pilot, age 52, was hired as a pilot by the State of Wisconsin's Department of Natural Resources (DNR) on July 8, 1985 and was subsequently transferred to Department of Administration (DOA) on July 3, 1988. He held an airline transport pilot certificate with airplane multiengine and single engine land ratings in addition to commercial rotorcraft and instrument helicopter ratings and their respective flight instructor ratings. He also held a ground instructor certificate with advanced and instrument ratings. The pilot served as a pilot-in-command and an instructor under FAR Part 91 on Beech Queen Air aircraft and under FAR Part 135 on Beech King Air 200. His first-class medical was issued on July 7, 1998, with the limitation, "holder shall wear glasses which correct for near/intermediate vision while exercising the privileges of his airman certificate." Records provided by the DOA indicate that the pilot had accumulated approximately 14,800 total flying hours. He had logged 1,200 hours in the Beech Baron, of which 101 hours were in the previous year and 18 hours were in the previous 90 days from the date of the accident. The pilot received an in-house proficiency check conducted by the DOA in July of 1997. The DOA described the pilot's duty time for a 72-hour period before the accident. On September 13, 1998, he was on duty from 1430-2030 with a 2.1 hour flight in a Beech Queen Air. On September 15, 1998, the pilot was on duty from 0700-1500 for a flight which later cancelled. On September 16, 1998, the pilot was scheduled to begin duty at 0600 for a 0700 departure to RZN. AIRCRAFT INFORMATION The 1973 Beech Baron 58, serial number TH-374, N4574Q, registered to the State of Wisconsin, had a total airframe time of 7,766 hours. The aircraft was equipped with a 24-volt electrical system powered by a battery and two gear-driven alternators. The aircraft was maintained by the DOA under the Beechcraft continuing care inspection program since September 30, 1986 and had completed period 6 of 12 on July 2, 1998 at an airframe time of 7,735 hours. The left engine, Teledyne Continental IO-520-CB, serial number 282177-R, is a fuel injected, air cooled six cylinder engine rated at 285 horsepower at 2,700 rpm. The engine was overhauled on February 20, 1992 and had accumulated 1,550 hours since its last overhaul. The right engine, Teledyne Continental IO-520-CB, serial number 172847-H, is a fuel injected, air cooled six cylinder engine rated at 285 horsepower at 2,700 rpm. The engine was overhauled on June 18, 1997 and had accumulated 206 hours since its last overhaul. An electric door ## Aircraft - Registration: [N4574Q](https://openairdocs.org/deregistered/N4574Q-2013-08-13), registration cancelled 2013-08-13, S/N TH-374, built 1973 (OpenAirDocs) - Reported make and model: Beech 58 - Registry model: [Beech 58](https://openairdocs.org/model/beech-58) (registry code 1152740) (OpenAirDocs) - Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: TH-374 - Airframe hours: 7735 - Engines: Continental IO-520-CB 285 horsepower reciprocating - Damage: Destroyed - Fire: On-Ground - Flight: Business, Part 91 - Registered owner: State Of Wisconsin - Airworthiness certificate: Standard, Normal - Last inspection: Continuous airworthiness, July 2, 1998, 32 hours before - Departed: MSN, MADISON, WI - Destination: RZN, SIREN, WI - Flight plan: IFR - Airport: VOK, Volk Field ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 52; flight instructor, airline transport, commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane, helicopter; medical: class 1, valid medical--w/ waivers/lim; seat: left; toxicology performed; flight hours: 14,800 total, 1,200 in this make and model, 95 in the last 90 days, 40 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 150° at 3 knots - Visibility: 7 statute miles - Lowest ceiling: none - Temperature: 57 °F, dew point 55 °F - Altimeter: 30.00 inHg - Observed at: VOK, 13 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 19980916038279A](https://openairdocs.org/incident/19980916038279A), Sep 16, 1998: Beech 58, Oakdale, WI, Destroyed, 3 fatal. (.19)On September 16, 1998, at 0750 central daylight time, a Beech baron 58, N4574Q, operated by an airline transport rated pilot, was destroyed by fire… ## Docket (170 files) The files NTSB released with the investigation on October 7, 1999, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=43934. - Supplement A (item 1, .PDF, 237 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111905&FileExtension=.PDF&FileName=Supplement%20A-Master.PDF - Supplement B (item 2, .PDF, 425 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111906&FileExtension=.PDF&FileName=Supplement%20B-Master.PDF - Supplement K (item 3, .PDF, 435 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111907&FileExtension=.PDF&FileName=Supplement%20K-Master.PDF - Supplement S (item 4, .PDF, 53 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40449178&FileExtension=.PDF&FileName=Supplement%20S-Redacted.PDF - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1/2 (item 5, .PDF, 454 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40449179&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1%2F2-Redacted.PDF - Materials Laboratory Factual Report (item 6, .PDF, 94 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40449180&FileExtension=.PDF&FileName=Materials%20Laboratory%20Factual%20Report-Redacted.PDF - Witness Statements & Record of Interviews (item 7, .PDF, 302 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40449181&FileExtension=.PDF&FileName=Witness%20Statements%20%26%20Record%20of%20Interviews-Redacted.PDF - Maps and Charts of Accident Area, Wreckage Diagrams (item 8, .PDF, 1.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111912&FileExtension=.PDF&FileName=Maps%20and%20Charts%20of%20Accident%20Area,%20Wreckage%20Diagrams-Master.PDF - Weather Information (item 9, .PDF, 125 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111913&FileExtension=.PDF&FileName=Weather%20Information-Master.PDF - ATC Transcriptions (item 10, .PDF, 134 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40449182&FileExtension=.PDF&FileName=ATC%20Transcriptions-Redacted.PDF - Radar Data (item 11, .PDF, 586 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111915&FileExtension=.PDF&FileName=Radar%20Data-Master.PDF - Reports of Component Testing (item 12, .PDF, 2.6 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40449183&FileExtension=.PDF&FileName=Reports%20of%20Component%20Testing-Redacted.PDF - Reports of Component Testing: Photo 1. Engine Data Plate, S/N 282177-R (item 13, .PDF, 40 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111917&FileExtension=.PDF&FileName=Reports%20of%20Component%20Testing%3A%20%20Photo%201.%20Engine%20Data%20Plate,%20S%2FN%20282177-R-Master.PDF - Photo 2. Engine Crate (item 14, .PDF, 44 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111918&FileExtension=.PDF&FileName=Photo%202.%20%20Engine%20Crate-Master.PDF - Photo 3. Front of Engine in Crate (item 15, .PDF, 47 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111919&FileExtension=.PDF&FileName=Photo%203.%20%20Front%20of%20Engine%20in%20Crate%20%20-Master.PDF - Photo 4. Right Side (item 16, .PDF, 54 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111920&FileExtension=.PDF&FileName=Photo%204.%20%20Right%20Side-Master.PDF - Photo 5. Left Side (item 17, .PDF, 52 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111921&FileExtension=.PDF&FileName=Photo%205.%20%20Left%20Side-Master.PDF - Photo 6. Rear (item 18, .PDF, 50 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111922&FileExtension=.PDF&FileName=Photo%206.%20%20Rear-Master.PDF - Photo 7. Front of Engine on Hoist (item 19, .PDF, 49 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111923&FileExtension=.PDF&FileName=Photo%207.%20%20Front%20of%20Engine%20on%20Hoist-Master.PDF - Photo 8. Right Front (item 20, .PDF, 45 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111924&FileExtension=.PDF&FileName=Photo%208.%20%20Right%20Front-Master.PDF - Photo 9. Right Side (item 21, .PDF, 45 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111925&FileExtension=.PDF&FileName=Photo%209.%20%20Right%20Side-Master.PDF - Photo 10. Right Side (item 22, .PDF, 42 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111926&FileExtension=.PDF&FileName=Photo%2010.%20%20Right%20Side-Master.PDF - Photo 11. Rear (item 23, .PDF, 42 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111927&FileExtension=.PDF&FileName=Photo%2011.%20%20Rear-Master.PDF - Photo 12. Left Rear (item 24, .PDF, 40 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111928&FileExtension=.PDF&FileName=Photo%2012.%20%20Left%20Rear-Master.PDF - Photo 13. Left Side (item 25, .PDF, 40 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111929&FileExtension=.PDF&FileName=Photo%2013.%20%20Left%20Side-Master.PDF - Photo 14. Left Front (item 26, .PDF, 40 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111930&FileExtension=.PDF&FileName=Photo%2014.%20%20Left%20Front-Master.PDF - Photo 15. Lower Rear (item 27, .PDF, 57 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111931&FileExtension=.PDF&FileName=Photo%2015.%20%20Lower%20Rear-Master.PDF - Photo 16. Top of Engine on Disassembly Stand (item 28, .PDF, 52 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111932&FileExtension=.PDF&FileName=Photo%2016.%20%20Top%20of%20Engine%20on%20Disassembly%20Stand-Master.PDF - Photo 17. Right Side (item 29, .PDF, 44 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111933&FileExtension=.PDF&FileName=Photo%2017.%20%20Right%20Side-Master.PDF - Photo 18. Left Side (item 30, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111934&FileExtension=.PDF&FileName=Photo%2018.%20%20Left%20Side-Master.PDF - Photo 19. Bottom (item 31, .PDF, 47 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111935&FileExtension=.PDF&FileName=Photo%2019.%20%20Bottom-Master.PDF - Photo 20. Oil Sump and Oil Pickup Tube (item 32, .PDF, 37 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111936&FileExtension=.PDF&FileName=Photo%2020.%20%20Oil%20Sump%20and%20Oil%20Pickup%20Tube-Master.PDF - Photo 21. Oil Pump Components (item 33, .PDF, 46 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111937&FileExtension=.PDF&FileName=Photo%2021.%20%20Oil%20Pump%20Components-Master.PDF - Photo 22. Oil Pressure Relief Valve Plunger (item 34, .PDF, 39 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111938&FileExtension=.PDF&FileName=Photo%2022.%20%20Oil%20Pressure%20Relief%20Valve%20Plunger-Master.PDF - Photo 23. Oil Pump Gears (item 35, .PDF, 42 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111939&FileExtension=.PDF&FileName=Photo%2023.%20%20Oil%20Pump%20Gears-Master.PDF - Photo 24. Oil Filter Housing - Impact Damaged (item 36, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111940&FileExtension=.PDF&FileName=Photo%2024.%20%20Oil%20Filter%20Housing%20-%20Impact%20Damaged-Master.PDF - Photo 25. Oil Filter (item 37, .PDF, 44 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111941&FileExtension=.PDF&FileName=Photo%2025.%20%20Oil%20Filter-Master.PDF - Photo 26. Oil Filter Element (item 38, .PDF, 36 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111942&FileExtension=.PDF&FileName=Photo%2026.%20%20Oil%20Filter%20Element-Master.PDF - Photo 27. Right Side Cylinder Overheads (item 39, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111943&FileExtension=.PDF&FileName=Photo%2027.%20%20Right%20Side%20Cylinder%20Overheads-Master.PDF - Photo 28. Left Side Cylinder Overheads (item 40, .PDF, 45 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111944&FileExtension=.PDF&FileName=Photo%2028.%20%20Left%20Side%20Cylinder%20Overheads-Master.PDF - Photo 29. Right Side Cylinders and Pistons (item 41, .PDF, 45 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111945&FileExtension=.PDF&FileName=Photo%2029.%20%20Right%20Side%20Cylinders%20and%20Pistons-Master.PDF - Photo 30. Left Side Cylinders and Pistons (item 42, .PDF, 47 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111946&FileExtension=.PDF&FileName=Photo%2030.%20%20Left%20Side%20Cylinders%20and%20Pistons-Master.PDF - Photo 31. Crankcase Interior Components (item 43, .PDF, 45 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111947&FileExtension=.PDF&FileName=Photo%2031.%20%20Crankcase%20Interior%20Components-Master.PDF - Photo 32. Crankshaft and Connecting Rods (item 44, .PDF, 47 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111948&FileExtension=.PDF&FileName=Photo%2032.%20%20Crankshaft%20and%20Connecting%20Rods-Master.PDF - Photo 33. Crankshaft Propeller Flange Broken at Impact (item 45, .PDF, 39 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111949&FileExtension=.PDF&FileName=Photo%2033.%20%20Crankshaft%20Propeller%20Flange%20Broken%20at%20Impact-Master.PDF - Photo 34. Number 2 Connecting Rod Bearings (item 46, .PDF, 37 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111950&FileExtension=.PDF&FileName=Photo%2034.%20%20Number%202%20Connecting%20Rod%20Bearings-Master.PDF - Photo 35. Camshaft (item 47, .PDF, 45 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111951&FileExtension=.PDF&FileName=Photo%2035.%20%20Camshaft-Master.PDF - Photo 36. Right Crankcase Exterior (item 48, .PDF, 37 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111952&FileExtension=.PDF&FileName=Photo%2036.%20%20Right%20Crankcase%20Exterior-Master.PDF - Photo 37. Right Crankcase Interior (item 49, .PDF, 37 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111953&FileExtension=.PDF&FileName=Photo%2037.%20%20Right%20Crankcase%20Interior-Master.PDF - Photo 38. Front Main Bearing (item 50, .PDF, 37 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111954&FileExtension=.PDF&FileName=Photo%2038.%20%20Front%20Main%20Bearing-Master.PDF - Photo 39. Number 3 Main Bearing (item 51, .PDF, 31 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111955&FileExtension=.PDF&FileName=Photo%2039.%20%20Number%203%20Main%20Bearing-Master.PDF - Photo 40. Number 2 Main Bearing (item 52, .PDF, 32 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111956&FileExtension=.PDF&FileName=Photo%2040.%20%20Number%202%20Main%20Bearing-Master.PDF - Photo 41. Rear Main Bearing (item 53, .PDF, 35 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111957&FileExtension=.PDF&FileName=Photo%2041.%20%20Rear%20Main%20Bearing-Master.PDF - Photo 42. Left Crankcase Exterior (item 54, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111958&FileExtension=.PDF&FileName=Photo%2042.%20%20Left%20Crankcase%20Exterior-Master.PDF - Photo 43. Left Crankcase Interior (item 55, .PDF, 39 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111959&FileExtension=.PDF&FileName=Photo%2043.%20%20Left%20Crankcase%20Interior-Master.PDF - Photo 44. Spark Plugs (item 56, .PDF, 40 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111960&FileExtension=.PDF&FileName=Photo%2044.%20%20Spark%20Plugs-Master.PDF - Photo 45. Left Magneto (item 57, .PDF, 45 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111961&FileExtension=.PDF&FileName=Photo%2045.%20%20Left%20Magneto-Master.PDF - Photo 46. Right Magneto (item 58, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111962&FileExtension=.PDF&FileName=Photo%2046.%20%20Right%20Magneto-Master.PDF - Photo 47. Left Magneto on Test Stand (item 59, .PDF, 40 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111963&FileExtension=.PDF&FileName=Photo%2047.%20%20Left%20Magneto%20on%20Test%20Stand-Master.PDF - Photo 48. Right Magneto on Test Stand (item 60, .PDF, 40 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111964&FileExtension=.PDF&FileName=Photo%2048.%20%20Right%20Magneto%20on%20Test%20Stand-Master.PDF - Photo 49. Fuel Pump and Drive Coupling (item 61, .PDF, 38 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111965&FileExtension=.PDF&FileName=Photo%2049.%20%20Fuel%20Pump%20and%20Drive%20Coupling-Master.PDF - Photo 50. Fuel Pump (item 62, .PDF, 42 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111966&FileExtension=.PDF&FileName=Photo%2050.%20%20Fuel%20Pump-Master.PDF - Photo 51. Fuel Pump on Flow Bench (item 63, .PDF, 44 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111967&FileExtension=.PDF&FileName=Photo%2051.%20%20Fuel%20Pump%20on%20Flow%20Bench-Master.PDF - Photo 52. Throttle Body/Fuel Control (item 64, .PDF, 41 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111968&FileExtension=.PDF&FileName=Photo%2052.%20%20Throttle%20Body%2FFuel%20Control-Master.PDF - Photo 53. Throttle Body/Fuel Control (item 65, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111969&FileExtension=.PDF&FileName=Photo%2053.%20%20Throttle%20Body%2FFuel%20Control-Master.PDF - Photo 54. Throttle Body/Fuel Control Fuel Inlet Screen (item 66, .PDF, 36 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111970&FileExtension=.PDF&FileName=Photo%2054.%20%20Throttle%20Body%2FFuel%20Control%20Fuel%20Inlet%20Screen-Master.PDF - Photo 55. Fuel Control Internal Components (item 67, .PDF, 33 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111971&FileExtension=.PDF&FileName=Photo%2055.%20%20Fuel%20Control%20Internal%20Components-Master.PDF - Photo 56. Manifold Valve on Flow Bench (item 68, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111972&FileExtension=.PDF&FileName=Photo%2056.%20%20Manifold%20Valve%20on%20Flow%20Bench-Master.PDF - Photo 57. Starter Adapter (item 69, .PDF, 45 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111973&FileExtension=.PDF&FileName=Photo%2057.%20%20Starter%20Adapter-Master.PDF - Photo 58. Oil Cooler (item 70, .PDF, 45 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111974&FileExtension=.PDF&FileName=Photo%2058.%20%20Oil%20Cooler-Master.PDF - Photo 59. Tachometer Generator (item 71, .PDF, 46 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111975&FileExtension=.PDF&FileName=Photo%2059.%20%20Tachometer%20Generator-Master.PDF - Photo 60. Vacuum Pump (item 72, .PDF, 42 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111976&FileExtension=.PDF&FileName=Photo%2060.%20%20Vacuum%20Pump-Master.PDF - Photo 61. Propeller Governor (item 73, .PDF, 47 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111977&FileExtension=.PDF&FileName=Photo%2061.%20%20Propeller%20Governor-Master.PDF - Reports of Component Testing: Photo 1. Engine Data Plate, S/N 172847-H (item 74, .PDF, 26 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111978&FileExtension=.PDF&FileName=Reports%20of%20Component%20Testing%3A%20%20Photo%201.%20%20Engine%20Data%20Plate,%20S%2FN%20172847-H-Master.PDF - Photo 2. Engine Crate (item 75, .PDF, 35 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111979&FileExtension=.PDF&FileName=Photo%202.%20%20Engine%20Crate-Master.PDF - Photo 3. Front of Engine in Crate (item 76, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111980&FileExtension=.PDF&FileName=Photo%203.%20%20Front%20of%20Engine%20in%20Crate-Master.PDF - Photo 4. Right Side (item 77, .PDF, 45 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111981&FileExtension=.PDF&FileName=Photo%204.%20%20Right%20Side-Master.PDF - Photo 5. Left Side (item 78, .PDF, 44 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111982&FileExtension=.PDF&FileName=Photo%205.%20%20Left%20Side-Master.PDF - Photo 6. Rear (item 79, .PDF, 45 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111983&FileExtension=.PDF&FileName=Photo%206.%20%20Rear-Master.PDF - Photo 7. Front of Engine on Hoist (item 80, .PDF, 49 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111984&FileExtension=.PDF&FileName=Photo%207.%20%20Front%20of%20Engine%20on%20Hoist-Master.PDF - Photo 8. Right Front (item 81, .PDF, 49 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111985&FileExtension=.PDF&FileName=Photo%208.%20%20Right%20Front-Master.PDF - Photo 9. Right Side (item 82, .PDF, 49 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111986&FileExtension=.PDF&FileName=Photo%209.%20%20Right%20Side-Master.PDF - Photo 10. Right Rear (item 83, .PDF, 49 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111987&FileExtension=.PDF&FileName=Photo%2010.%20%20Right%20Rear-Master.PDF - Photo 11. Rear (item 84, .PDF, 51 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111988&FileExtension=.PDF&FileName=Photo%2011.%20%20Rear-Master.PDF - Photo 12. Left Rear (item 85, .PDF, 49 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111989&FileExtension=.PDF&FileName=Photo%2012.%20%20Left%20Rear-Master.PDF - Photo 13. Left Side (item 86, .PDF, 50 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111990&FileExtension=.PDF&FileName=Photo%2013.%20%20Left%20Side-Master.PDF - Photo 14. Left Front (item 87, .PDF, 48 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111991&FileExtension=.PDF&FileName=Photo%2014.%20%20Left%20Front-Master.PDF - Photo 15. Lower Front (item 88, .PDF, 48 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111992&FileExtension=.PDF&FileName=Photo%2015.%20%20Lower%20Front-Master.PDF - Photo 16. Lower Rear (item 89, .PDF, 51 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111993&FileExtension=.PDF&FileName=Photo%2016.%20%20Lower%20Rear-Master.PDF - Photo 17. Damaged Propeller Flange From Impact (item 90, .PDF, 23 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111994&FileExtension=.PDF&FileName=Photo%2017.%20%20Damaged%20Propeller%20Flange%20From%20Impact-Master.PDF - Photo 18. Damaged Propeller Flange From Impact (item 91, .PDF, 29 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111995&FileExtension=.PDF&FileName=Photo%2018.%20%20Damaged%20Propeller%20Flange%20From%20Impact-Master.PDF - Photo 19. Damaged Propeller Flange From Impact (item 92, .PDF, 31 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111996&FileExtension=.PDF&FileName=Photo%2019.%20%20Damaged%20Propeller%20Flange%20From%20Impact-Master.PDF - Photo 20. Fire Damage on Top of Engine-#6 Fuel Line Found Loose (item 93, .PDF, 47 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111997&FileExtension=.PDF&FileName=Photo%2020.%20%20Fire%20Damage%20on%20Top%20of%20Engine-%236%20Fuel%20Line%20Found%20Loose-Master.PDF - Photo 21. Fire Damage on Top Left of Engine (item 94, .PDF, 55 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111998&FileExtension=.PDF&FileName=Photo%2021.%20%20Fire%20Damage%20on%20Top%20Left%20of%20Engine-Master.PDF - Photo 22. Fire Damage on Right Top of Fuel Hose (item 95, .PDF, 49 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40111999&FileExtension=.PDF&FileName=Photo%2022.%20%20Fire%20Damage%20on%20Right%20Top%20of%20Fuel%20Hose-Master.PDF - Photo 23. Fire Damage to Vacuum Air Filter Plastic Shroud (item 96, .PDF, 35 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112000&FileExtension=.PDF&FileName=Photo%2023.%20%20Fire%20Damage%20to%20Vacuum%20Air%20Filter%20Plastic%20Shroud-Master.PDF - Photo 24. Top of Engine on Disassembly Stand (item 97, .PDF, 51 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112001&FileExtension=.PDF&FileName=Photo%2024.%20%20Top%20of%20Engine%20on%20Disassembly%20Stand-Master.PDF - Photo 25. Right Side (item 98, .PDF, 38 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112002&FileExtension=.PDF&FileName=Photo%2025.%20%20Right%20Side-Master.PDF - Photo 26. Left Side (item 99, .PDF, 35 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112003&FileExtension=.PDF&FileName=Photo%2026.%20%20Left%20Side-Master.PDF - Photo 27. Bottom (item 100, .PDF, 47 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112004&FileExtension=.PDF&FileName=Photo%2027.%20%20Bottom-Master.PDF - Photo 28. Oil Sump and Oil Pickup Tube (item 101, .PDF, 41 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112005&FileExtension=.PDF&FileName=Photo%2028.%20%20Oil%20Sump%20and%20Oil%20Pickup%20Tube-Master.PDF - Photo 29. Oil Pump Internal Components (item 102, .PDF, 44 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112006&FileExtension=.PDF&FileName=Photo%2029.%20%20Oil%20Pump%20Internal%20Components-Master.PDF - Photo 30. Oil Filter (item 103, .PDF, 32 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112007&FileExtension=.PDF&FileName=Photo%2030.%20%20Oil%20Filter-Master.PDF - Photo 31. Right Side Cylinder Overheads (item 104, .PDF, 39 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112008&FileExtension=.PDF&FileName=Photo%2031.%20%20Right%20Side%20Cylinder%20Overheads-Master.PDF - Photo 32. Left Side Cylinder Overheads (item 105, .PDF, 39 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112009&FileExtension=.PDF&FileName=Photo%2032.%20%20Left%20Side%20Cylinder%20Overheads-Master.PDF - Photo 33. Right Side Cylinders and Pistons (item 106, .PDF, 41 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112010&FileExtension=.PDF&FileName=Photo%2033.%20%20Right%20Side%20Cylinders%20and%20Pistons-Master.PDF - Photo 34. Left Side Cylinders and Pistons (item 107, .PDF, 41 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112011&FileExtension=.PDF&FileName=Photo%2034.%20%20Left%20Side%20Cylinders%20and%20Pistons-Master.PDF - Photo 35. Crankcase Interior Components (item 108, .PDF, 48 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112012&FileExtension=.PDF&FileName=Photo%2035.%20%20Crankcase%20Interior%20Components-Master.PDF - Photo 36. Number 2 Connecting Rod Bearings (item 109, .PDF, 34 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112013&FileExtension=.PDF&FileName=Photo%2036.%20%20Number%202%20Connecting%20Rod%20Bearings-Master.PDF - Photo 37. Camshaft (item 110, .PDF, 30 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112014&FileExtension=.PDF&FileName=Photo%2037.%20%20Camshaft-Master.PDF - Photo 38. Right Crankcase Exterior (item 111, .PDF, 37 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112015&FileExtension=.PDF&FileName=Photo%2038.%20%20Right%20Crankcase%20Exterior-Master.PDF - Photo 39. Right Crankcase Interior (item 112, .PDF, 36 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112016&FileExtension=.PDF&FileName=Photo%2039.%20%20Right%20Crankcase%20Interior-Master.PDF - Photo 40. Work Order Number on Crankcase (item 113, .PDF, 25 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112017&FileExtension=.PDF&FileName=Photo%2040.%20%20Work%20Order%20Number%20on%20Crankcase-Master.PDF - Photo 41. Front Main Bearings (item 114, .PDF, 33 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112018&FileExtension=.PDF&FileName=Photo%2041.%20%20Front%20Main%20Bearings-Master.PDF - Photo 42. Number 3 Main Bearing (item 115, .PDF, 28 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112019&FileExtension=.PDF&FileName=Photo%2042.%20%20Number%203%20Main%20Bearing-Master.PDF - Photo 43. Number 2 Main Bearing (item 116, .PDF, 29 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112020&FileExtension=.PDF&FileName=Photo%2043.%20%20Number%202%20Main%20Bearing-Master.PDF - Photo 44. Rear Main Bearing (item 117, .PDF, 28 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112021&FileExtension=.PDF&FileName=Photo%2044.%20%20Rear%20Main%20Bearing-Master.PDF - Photo 45. Left Crankcase Exterior (item 118, .PDF, 38 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112022&FileExtension=.PDF&FileName=Photo%2045.%20%20Left%20Crankcase%20Exterior-Master.PDF - Photo 46. Left Crankcase Interior (item 119, .PDF, 40 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112023&FileExtension=.PDF&FileName=Photo%2046.%20%20Left%20Crankcase%20Interior-Master.PDF - Photo 47. Spark Plugs (item 120, .PDF, 40 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112024&FileExtension=.PDF&FileName=Photo%2047.%20%20Spark%20Plugs-Master.PDF - Photo 48. Right Magneto on Test Stand (item 121, .PDF, 40 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112025&FileExtension=.PDF&FileName=Photo%2048.%20%20Right%20Magneto%20on%20Test%20Stand-Master.PDF - Photo 49. Left Magneto on Test Stand (item 122, .PDF, 40 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112026&FileExtension=.PDF&FileName=Photo%2049.%20%20Left%20Magneto%20on%20Test%20Stand-Master.PDF - Photo 50. Left Magneto Interior Components (item 123, .PDF, 35 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112027&FileExtension=.PDF&FileName=Photo%2050.%20%20Left%20Magneto%20Interior%20Components-Master.PDF - Photo 51. Fuel Pump and Drive Coupling (item 124, .PDF, 36 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112028&FileExtension=.PDF&FileName=Photo%2051.%20%20Fuel%20Pump%20and%20Drive%20Coupling-Master.PDF - Photo 52. Fuel Pump (item 125, .PDF): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112029&FileExtension=.PDF&FileName=Photo%2052.%20%20Fuel%20Pump-Master.PDF - Photo 53. Fuel Pump on Flow Bench (item 126, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112030&FileExtension=.PDF&FileName=Photo%2053.%20%20Fuel%20Pump%20on%20Flow%20Bench-Master.PDF - Photo 54. Throttle Body/Fuel Control (item 127, .PDF, 37 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112031&FileExtension=.PDF&FileName=Photo%2054.%20%20Throttle%20Body%2FFuel%20Control-Master.PDF - Photo 55. Throttle Body/Fuel Control (item 128, .PDF, 37 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112032&FileExtension=.PDF&FileName=Photo%2055.%20%20Throttle%20Body%2FFuel%20Control-Master.PDF - Photo 56. Throttle Body/Fuel Control Inlet Screen (item 129, .PDF, 33 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112033&FileExtension=.PDF&FileName=Photo%2056.%20%20Throttle%20Body%2FFuel%20Control%20Inlet%20Screen-Master.PDF - Photo 57. Fuel Control on Flow Bench (item 130, .PDF, 37 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112034&FileExtension=.PDF&FileName=Photo%2057.%20%20Fuel%20Control%20on%20Flow%20Bench-Master.PDF - Photo 58. Manifold Valve (item 131, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112035&FileExtension=.PDF&FileName=Photo%2058.%20%20Manifold%20Valve-Master.PDF - Photo 59. Manifold Valve on Flow Bench (item 132, .PDF, 36 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112036&FileExtension=.PDF&FileName=Photo%2059.%20%20Manifold%20Valve%20on%20Flow%20Bench-Master.PDF - Photo 60. Starter Adapter (item 133, .PDF, 41 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112037&FileExtension=.PDF&FileName=Photo%2060.%20%20Starter%20Adapter-Master.PDF - Photo 61. Oil Cooler (item 134, .PDF, 46 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112038&FileExtension=.PDF&FileName=Photo%2061.%20%20Oil%20Cooler-Master.PDF - Photo 62. Alternator (item 135, .PDF, 38 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112039&FileExtension=.PDF&FileName=Photo%2062.%20%20Alternator-Master.PDF - Photo 63. Tachometer Generator (item 136, .PDF, 35 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112040&FileExtension=.PDF&FileName=Photo%2063.%20%20Tachometer%20Generator-Master.PDF - Photo 64. Vacuum Pump (item 137, .PDF, 41 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112041&FileExtension=.PDF&FileName=Photo%2064.%20%20Vacuum%20Pump-Master.PDF - Photo 65. Sheared Vacuum Pump Drive (item 138, .PDF, 32 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112042&FileExtension=.PDF&FileName=Photo%2065.%20%20Sheared%20Vacuum%20Pump%20Drive-Master.PDF - Photo 66. Propeller Governor (item 139, .PDF, 42 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112043&FileExtension=.PDF&FileName=Photo%2066.%20%20Propeller%20Governor-Master.PDF - Aircraft Fleet Information (item 140, .PDF, 72 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112044&FileExtension=.PDF&FileName=Aircraft%20Fleet%20Information-Master.PDF - State of Wisconsin Aviation Organizational Structure (item 141, .PDF, 236 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40449184&FileExtension=.PDF&FileName=State%20of%20Wisconsin%20Aviation%20Organizational%20Structure-Redacted.PDF - Volk Tower Communications Log (item 142, .PDF, 110 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40449185&FileExtension=.PDF&FileName=Volk%20Tower%20Communications%20Log-Redacted.PDF - Pilot Information (item 143, .PDF, 290 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40449186&FileExtension=.PDF&FileName=Pilot%20Information-Redacted.PDF - Service Difficulty Reports (item 144, .PDF, 516 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40449187&FileExtension=.PDF&FileName=Service%20Difficulty%20Reports-Redacted.PDF - NTSB Safety Recommendation (item 145, .PDF, 592 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112049&FileExtension=.PDF&FileName=NTSB%20Safety%20Recommendation-Master.PDF - Airworthiness Directive 98-21-21 (item 146, .PDF, 462 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40449192&FileExtension=.PDF&FileName=Airworthiness%20Directive%2098-21-21-Redacted.PDF - Maintenance Information (item 147, .PDF, 227 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40449188&FileExtension=.PDF&FileName=Maintenance%20Information-Redacted.PDF - Pump Motor Installation Instructions (item 148, .PDF, 877 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40449190&FileExtension=.PDF&FileName=Pump%20Motor%20Installation%20Instructions-Redacted.PDF - Aircraft Station Diagram (item 149, .PDF, 54 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40449193&FileExtension=.PDF&FileName=Aircraft%20Station%20Diagram-Redacted.PDF - Pilot/Passenger Information (item 150, .PDF, 38 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40449194&FileExtension=.PDF&FileName=Pilot%2FPassenger%20Information-Redacted.PDF - Airport Information (item 151, .PDF, 400 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112055&FileExtension=.PDF&FileName=Airport%20Information-Master.PDF - Wisconsin Air Services Operations Manual (item 152, .PDF, 519 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112056&FileExtension=.PDF&FileName=Wisconsin%20Air%20Services%20Operations%20Manual-Master.PDF - Emergency Procedures (item 153, .PDF, 229 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112057&FileExtension=.PDF&FileName=Emergency%20Procedures-Master.PDF - Statement of Party Representatives to NTSB Investigation (item 154, .PDF, 446 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40449195&FileExtension=.PDF&FileName=Statement%20of%20Party%20Representatives%20to%20NTSB%20Investigation-Redacted.PDF - Release of Aircraft Wreckage, NTSB Form 6120.15 (item 155, .PDF, 157 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40449196&FileExtension=.PDF&FileName=Release%20of%20Aircraft%20Wreckage,%20NTSB%20Form%206120.15-Redacted.PDF - Toxicological Report (item 156, .PDF, 92 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112060&FileExtension=.PDF&FileName=Toxicological%20Report-Master.PDF - Photo 1. Wreckage Site (item 157, .PDF, 335 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112061&FileExtension=.PDF&FileName=Photo%201.%20%20Wreckage%20Site-Master.PDF - Photo 2. Cockpit Area (item 158, .PDF, 319 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112062&FileExtension=.PDF&FileName=Photo%202.%20%20Cockpit%20Area-Master.PDF - Photo 3. Cockpit Area (item 159, .PDF, 282 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112063&FileExtension=.PDF&FileName=Photo%203.%20%20Cockpit%20Area-Master.PDF - Photo 4. Resistor on Right Side Wall (item 160, .PDF, 248 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112064&FileExtension=.PDF&FileName=Photo%204.%20%20Resistor%20on%20Right%20Side%20Wall-Master.PDF - Photo 5. Resistor on Right Side Wall (item 161, .PDF, 267 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112065&FileExtension=.PDF&FileName=Photo%205.%20%20Resistor%20on%20Right%20Side%20Wall-Master.PDF - Photo 6. Resistor Removed from Right Side Wall of N4574Q (item 162, .PDF, 147 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112066&FileExtension=.PDF&FileName=Photo%206.%20%20Resistor%20Removed%20from%20Right%20Side%20Wall%20of%20N4574Q-Master.PDF - Photo 7. Resistor Location of Door Inflation System on Right Side Wall of N17979 (item 163, .PDF, 222 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112067&FileExtension=.PDF&FileName=Photo%207.%20%20Resistor%20Location%20of%20Door%20Inflation%20System%20on%20Right%20Side%20Wall%20of%20N17979-Master.PDF - Photo 8. Floor and Right Side Wall Carpeting (item 164, .PDF, 239 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112068&FileExtension=.PDF&FileName=Photo%208.%20%20Floor%20and%20Right%20Side%20Wall%20Carpeting-Master.PDF - Photo 9. Floor and Right Side Wall Carpeting (item 165, .PDF, 284 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112069&FileExtension=.PDF&FileName=Photo%209.%20%20Floor%20and%20Right%20Side%20Wall%20Carpeting-Master.PDF - Photo 10. Resistor on Right Side Wall (item 166, .PDF, 227 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112070&FileExtension=.PDF&FileName=Photo%2010.%20%20Resistor%20on%20Right%20Side%20Wall-Master.PDF - Photo 11. Resistor on Right Side Wall (item 167, .PDF, 189 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112071&FileExtension=.PDF&FileName=Photo%2011.%20%20Resistor%20on%20Right%20Side%20Wall-Master.PDF - Photo 12. Wreckage Layout (item 168, .PDF, 247 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112072&FileExtension=.PDF&FileName=Photo%2012.%20%20Wreckage%20Layout-Master.PDF - Photo 13. Wreckage Layout (item 169, .PDF, 251 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112073&FileExtension=.PDF&FileName=Photo%2013.%20%20Wreckage%20Layout-Master.PDF - Photo 14. Wreckage Layout (item 170, .PDF, 251 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40112074&FileExtension=.PDF&FileName=Photo%2014.%20%20Wreckage%20Layout-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.