# NTSB SEA02FA125: Cessna 172N, N738QT, Otis, OR, July 6, 2002 - Type: NTSB accident investigation - Classification: Accident · Fatal · Field investigation · Final report - Date: July 6, 2002, 09:30 local (16:30 UTC) - Place: Otis, OR - Coordinates: 45.042221, -123.999443 - Nearby events: https://openairdocs.org/map.md?lat=45.0422&lon=-123.9994&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: Fatal - Injuries: 2 fatal - Status: Completed, report May 13, 2003 - Report: Approved by Office Director - Parties: FAA Hillsboro FSDO - NTSB case key (mKey): 55161 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA02FA125 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/55161/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=55161 - Page: https://openairdocs.org/ntsb/SEA02FA125 ## Probable cause The pilot's failure to maintain adequate clearance with power lines while conducting low altitude flight resulting in a loss of control and subsequent collision with terrain. Contributing factors were the pilot's low altitude flight and the power lines. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - In flight collision with object, cruise - clearance - not maintained, pilot in command (cause) - object - wire,transmission (contributing factor) - altitude - low, pilot in command (contributing factor) - Loss of control - in flight, cruise - In flight collision with terrain/water, descent - uncontrolled - terrain condition - ground ## Analysis The pilot of the Cessna 172N departed Salem, Oregon, on a personal flight with one passenger. The aircraft was observed flying low in a westerly direction shortly after 9 am over the Salmon River estuary in VFR conditions when it pulled up into a climbing left turn and then descended to the ground impacting in an inverted, nose low attitude. Post-crash examination revealed that the aircraft impacted power lines with its left wingtip. The set of 3 horizontally oriented power lines crossed the estuary approximately 60 feet above ground near the point of aircraft contact and on a 033/213 magnetic bearing line. ## Factual narrative HISTORY OF FLIGHT On July 6, 2002, approximately 0930 Pacific daylight time, a Cessna 172N, N738QT, registered to and being flown by a private pilot was destroyed during an uncontrolled collision with terrain following a collision with power lines while in cruise approximately two and one-half miles west of Otis, Oregon. The pilot and passenger sustained fatal injuries. Visual meteorological conditions prevailed and no flight plan had been filed. The flight, which was personal, was operated under 14 CFR 91, and originated from McNary field, Salem, Oregon, at 0907. A number of adolescents at the YWCA Camp Westwind observed the aircraft accident. A Lincoln County Sheriff's Department deputy interviewed two members of the camp. He reported that both witnesses were situated along the shoreline of the river (south side - refer to CHART I). One witness reported hearing a plane flying in and said the plane was flying low to the water. The witness reported seeing the plane start a pull-up as it approached the power lines. The witness believed the plane's left wing contacted the power line. The second camp member interviewed reported observing the plane flying low over the water and then saw the plane pull up and turn. The witness then observed the plane's left wing hit the power line. A third witness interviewed by the deputy and located along the north side of the river (further east from the accident site) reported hearing the aircraft from her deck. She looked up and noticed the plane flying low over the water and initially thought the aircraft was float equipped and intended to land on the water. She watched the aircraft continue down river until she lost sight of it due to trees. After the aircraft was lost from sight she reported hearing the plane's engine quit (refer to Attachment SR-I). PERSONNEL INFORMATION The pilot possessed a private pilot certificate with airplane single-engine land ratings only. The certificate was issued October 11, 1997. No pilot logs were available and the pilot's total flight time of 900 hours was as reported as of his last medical examination, a third class with no restrictions, dated September 25, 2001. AIRCRAFT INFORMATION N738QT, A Cessna 172N, serial number 17270161, was registered to GKW Flights LLC. and was equipped with a Lycoming O-320-H2AD reciprocating engine. The pilot occupied the front left seat and the passenger occupied the front right seat. METEOROLOGICAL INFORMATION An Automated Weather Observing System (AWOS) at the Newport Municipal airport (ONP) reported the following conditions at 0930 on the morning of the accident (ONP is located 28 nautical miles south of the accident site): Ceiling 1,200 foot broken, visibility 10 statute miles, temperature and dew point 16 and 13 degrees Centigrade respectively, altimeter 30.07 inches of mercury and winds from 270 degrees magnetic at 5 knots. No precipitation or restrictions to visibility were reported. WRECKAGE AND IMPACT INFORMATION The aircraft crashed on a sandy tidal flat along the southern side of the Salmon River estuary near a low tide condition. The ground impact site consisted of compacted moist sand and the location of the ground impact site was 45 degrees 02.536 minutes North latitude and 123 degrees 59.962 minutes West longitude (refer to CHART II). The aircraft's ground impact site was approximately 350 feet northwest of a power line consisting of three horizontally situated cables oriented along a 033/213 degree magnetic bearing line (refer to photographs 1 and 2). The bearing line between the aircraft's ground impact site and the power line cable patch point (subsequent to the lines' repair) was 285 degrees magnetic. The power line patch point was near the low point of the line's catenary and the elevation of the three lines at the patch point was 60 feet above the ground impact elevation (refer to CHART II). The Lincoln County Sheriff's Department reported that upon their arrival at the site they observed two of the three power lines were entangled in the aircraft. The severed power lines were patched and all three lines returned to their original pole-to-pole placement prior to the investigator's arrival on site. The aircraft was first observed in approximately 3 feet of water in a nose low, inverted attitude (refer to photograph 3). On site examination at low tide determined that the aircraft came to rest with its longitudinal axis oriented along an approximate 195/015-degree magnetic bearing (nose south). The empennage was broken with a split at the underside of the fuselage at the rear of the cabin and compressive buckling at the top. The top of the vertical stabilizer was embedded in the sand and there were no ground scar marks associated with lateral movement across the sand (refer to photographs 4 through 7). The flaps were observed in the retracted position (verified by jackscrew position) and control continuity was established for all three sets of control surfaces as well as the elevator trim tab. The propeller remained attached to the engine and the spinner displayed compressive, aftward deformation. Both blades of the propeller were deformed slightly aft (refer to photograph 8). There was no evidence of any mechanical malfunction with or control discontinuity related to the engine. Photographic documentation of the accident site immediately after the accident provided by the Lincoln County Sheriff's Department showed both left and right wing struts attached at both the fuselage and wing attach points, as well as the power lines entangled in the airframe (refer to photographs 9 and 10). The horizontal and vertical stabilizers as well as their associated control surfaces were not deformed and showed no signatures along their leading edges characteristic of impact with a braded cable (refer to photographs 11 and 12). Both left and right wing leading edges displayed aftward compressive deformation with a noticeable downward distortion of the leading edge near each tip (refer to photograph 6). Several feet inboard of the left wingtip the leading edge skin of the left wing was observed to be torn and peeled outboard. The tearing signature where the skin was riveted to the wing spar was a "saw tooth" pattern (refer to photographs 13 and 14). MEDICAL AND PATHOLOGICAL INFORMATION Nikolas J. Hartshorne, M.D., conducted post-mortem examination of the pilot at the facilities of the Oregon State Medical Examiner's Office, Portland, Oregon, on July 7, 2002. The FAA's Toxicology Accident and Research Laboratory, Oklahoma City, Oklahoma conducted toxicological evaluation of samples from the pilot. The reported findings were all negative (refer to attached TOX report). ADDITIONAL INFORMATION On-site examination of the wreckage was conducted on July 6/7, 2002, after which the wreckage was verbally released to Lincoln City Towing for removal and security. The wreckage was subsequently released verbally to Mr. Tracy R. Barrus, Phoenix Aviation Managers, Inc. Written wreckage release was initiated on July 9, 2002, and is documented on NTSB Form 6120.15 (enclosed). ## Aircraft - Registration: [N738QT](https://openairdocs.org/deregistered/N738QT-2013-05-07), registration cancelled 2013-05-07, S/N 17270161, built 1977 (OpenAirDocs) - Reported make and model: Cessna 172N - Registry model: [Cessna 172N](https://openairdocs.org/model/cessna-172n) (registry code 2072434) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 17270161 - Airframe hours: 2092.66 - Engines: Lycoming O-320-H2AD 160 horsepower reciprocating - Damage: Destroyed - Flight: Personal, Part 91 - Registered owner: Guysin Jr., Leo J. - Airworthiness certificate: Standard, Normal - Last inspection: Annual, June 5, 2002, 13.26 hours before - Departed: SLE, Salem, OR ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 47; injuries: fatal; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; toxicology performed; flight hours: 900 total ## Weather - Conditions: Visual (VMC), Day - Wind: 270° at 5 knots - Visibility: 10 statute miles - Lowest ceiling: 1,200 ft broken - Temperature: 61 °F, dew point 55 °F - Altimeter: 30.06 inHg - Observed at: ONP, 28 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 20020706015729A](https://openairdocs.org/incident/20020706015729A), Jul 6, 2002: Cessna 172N, Lincolncity, OR, No damage, 2 fatal. (-23) On July 6, 2002, at around 0930 local time, witnesses observed N738QT, a CE-172, flying low over the salmon river. The aircraft then collided with some… ## Docket (21 files) The files NTSB released with the investigation on March 25, 2003, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=55161. 2.7 MB in all. - Supplement I (item 1, .PDF, 172 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40179045&FileExtension=.PDF&FileName=Supplement%20I-Master.PDF - Supplement S (item 2, .PDF, 33 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40179046&FileExtension=.PDF&FileName=Supplement%20S-Master.PDF - Chart I and II (item 3, .PDF, 225 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40179047&FileExtension=.PDF&FileName=Chart%20I%20and%20II-Master.PDF - Attachment SR-I (item 4, .PDF, 232 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40179048&FileExtension=.PDF&FileName=Attachment%20SR-I-Master.PDF - Toxicological Report (item 5, .PDF, 118 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40461212&FileExtension=.PDF&FileName=Toxicological%20Report-Master.PDF - Release of Aircraft Wreckage, NTSB Form 6120.15 (item 6, .PDF, 55 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40461213&FileExtension=.PDF&FileName=Release%20of%20Aircraft%20Wreckage,%20NTSB%20Form%206120.15-Master.PDF - Release of Aircraft Wreckage, NTSB Form 6120.15 - Signed (item 7, .PDF, 53 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40461214&FileExtension=.PDF&FileName=Release%20of%20Aircraft%20Wreckage,%20NTSB%20Form%206120.15%20-%20Signed-Master.PDF - Photo 1. A view looking 033 degrees magnetic at the northeast power pole and associated power lines. (item 8, .PDF, 130 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40179054&FileExtension=.PDF&FileName=Photo%201.%20%20A%20view%20looking%20033%20degrees%20magnetic%20at%20the%20northeast%20power%20pole%20and%20associated%20power%20lines.-Master.PDF - Photo 2. A view looking 213 degrees magnetic at the southwest power pole and associated power lines. (item 9, .PDF, 117 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40179055&FileExtension=.PDF&FileName=Photo%202.%20%20A%20view%20looking%20213%20degrees%20magnetic%20at%20the%20southwest%20power%20pole%20and%20associated%20power%20lines.-Master.PDF - Photo 3. A view looking approximately 115 degrees magnetic at the final resting place of N738QT near high tide on the evening following the accident. Note the power lines (arrows left and right). (item 10, .PDF, 153 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40179056&FileExtension=.PDF&FileName=Photo%203.%20A%20view%20looking%20approximately%20115%20degrees%20magnetic%20at%20the%20final%20resting%20place%20of%20N738QT%20near%20high%20tide%20on%20the%20evening%20following%20the%20accident.%20Note%20the%20power%20lines%20(arrows%20left%20and%20right).-Master.PDF - Photo 4. A view looking 193 degrees magnetic at the final resting place of N738QT. (item 11, .PDF, 112 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40179058&FileExtension=.PDF&FileName=Photo%204.%20%20A%20view%20looking%20193%20degrees%20magnetic%20at%20the%20final%20resting%20place%20of%20N738QT.-Master.PDF - Photo 5. A view looking 115 degrees magnetic at the final resting place of N738QT. (item 12, .PDF, 114 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40179059&FileExtension=.PDF&FileName=Photo%205.%20%20A%20view%20looking%20115%20degrees%20magnetic%20at%20the%20final%20resting%20place%20of%20N738QT.-Master.PDF - Photo 6. A view looking 015 degrees magnetic at the final resting place of N738QT. Note the aftward compressive damage at the outboard leading edge surfaces of both wings. (item 13, .PDF, 145 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40179060&FileExtension=.PDF&FileName=Photo%206.%20%20A%20view%20looking%20015%20degrees%20magnetic%20at%20the%20final%20resting%20place%20of%20N738QT.%20%20Note%20the%20aftward%20compressive%20damage%20at%20the%20outboard%20leading%20edge%20surfaces%20of%20both%20wings.-Master.PDF - Photo 7. A view looking 285 degrees magnetic at the final resting place of N738QT. (item 14, .PDF, 134 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40179061&FileExtension=.PDF&FileName=Photo%207.%20%20A%20view%20looking%20285%20degrees%20magnetic%20at%20the%20final%20resting%20place%20of%20N738QT.-Master.PDF - Photo 8. A head-on view showing the propeller and engine area. Note the aftward bending of both propeller blades. (item 15, .PDF, 179 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40179062&FileExtension=.PDF&FileName=Photo%208.%20%20A%20head-on%20view%20showing%20the%20propeller%20and%20engine%20area.%20%20Note%20the%20aftward%20bending%20of%20both%20propeller%20blades.-Master.PDF - Photo 9. A Lincoln County Sheriff's Department photograph showing both left and right wing struts still attached at their respective fuselage and wing points. No Negative. (item 16, .PDF, 69 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40179063&FileExtension=.PDF&FileName=Photo%209.%20%20A%20Lincoln%20County%20Sheriff%27s%20Department%20photograph%20showing%20both%20left%20and%20right%20wing%20struts%20still%20attached%20at%20their%20respective%20fuselage%20and%20wing%20points.%20%20No%20Negative.-Master.PDF - Photo 10. A Lincoln County Sheriff's Department photograph showing one of the power lines (arrow) draped over the trailing edge of the right wing. No Negative. (item 17, .PDF, 114 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40179064&FileExtension=.PDF&FileName=Photo%2010.%20%20A%20Lincoln%20County%20Sheriff%27s%20Department%20photograph%20showing%20one%20of%20the%20power%20lines%20(arrow)%20draped%20over%20the%20trailing%20edge%20of%20the%20right%20wing.%20%20No%20Negative.-Master.PDF - Photo 11. A right side view of the vertical and horizontal stabilizers and associated control surfaces. (item 18, .PDF, 152 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40179065&FileExtension=.PDF&FileName=Photo%2011.%20%20A%20right%20side%20view%20of%20the%20vertical%20and%20horizontal%20stabilizers%20and%20associated%20control%20surfaces.-Master.PDF - Photo 12. A left side view of the vertical and horizontal stabilizers and associated control surfaces. (item 19, .PDF, 151 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40179066&FileExtension=.PDF&FileName=Photo%2012.%20%20A%20left%20side%20view%20of%20the%20vertical%20and%20horizontal%20stabilizers%20and%20associated%20control%20surfaces.-Master.PDF - Photo 13. A leading edge (head-on) view of the outboard left wing section showing the torn leading edge skin. (item 20, .PDF, 149 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40179067&FileExtension=.PDF&FileName=Photo%2013.%20%20A%20leading%20edge%20(head-on)%20view%20of%20the%20outboard%20left%20wing%20section%20showing%20the%20torn%20leading%20edge%20skin.-Master.PDF - Photo 14. A leading edge (overhead) view of the same area. Note the "saw tooth" tearing of leading edge skin at the rivet line (arrow heads). (item 21, .PDF, 126 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40179068&FileExtension=.PDF&FileName=Photo%2014.%20%20A%20leading%20edge%20(overhead)%20view%20of%20the%20same%20area.%20%20Note%20the%20%22saw%20tooth%22%20tearing%20of%20leading%20edge%20skin%20at%20the%20rivet%20line%20(arrow%20heads).-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.