# NTSB LAX03TA174: Cessna 182Q, N4892N, So Lake Tahoe, CA, May 31, 2003 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Final report - Date: May 31, 2003, 06:17 local (13:17 UTC) - Place: So Lake Tahoe, CA - Coordinates: 38.883335, -119.983329 - Nearby events: https://openairdocs.org/map.md?lat=38.8833&lon=-119.9833&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor, 2 uninjured - Status: Completed, report July 31, 2006 - Report: Approved by Office Director - Parties: Cessna Aircraft Company, Federal Aviation Administration, Civil Air Patrol/US Air Force Liaison - NTSB case key (mKey): 57113 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX03TA174 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/57113/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=57113 - Page: https://openairdocs.org/ntsb/LAX03TA174 ## Probable cause a loss of pitch flight control authority due to the disconnection and separation of the elevator DOWN control cable turnbuckle. The separation of the turnbuckle was due to the severance of the safety wire by unknown persons at an unknown time. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - in flight, takeoff - initial climb - miscellaneous, unknown (cause) - flt control syst,elevator control cable/rod - not safetied (cause) - flt control syst,elevator control cable/rod - separation (cause) - elevator - not available, pilot in command (cause) - Forced landing, emergency landing after takeoff - On ground/water encounter with terrain/water, emergency landing - terrain condition - high vegetation - terrain condition - soft - Nose over, landing - roll ## Analysis Pitch control was lost during the takeoff initial climb due to a separated elevator control cable and the aircraft nosed over during an off-airport forced landing. During climb out, both pilots noted an increasing nose high pitch attitude and pushed forward on their respective yokes in an effort to regain aircraft control. The aircraft did not respond to control yoke inputs and the certified flight instructor (CFI) was only able to regain control by retracting the flaps and retarding the throttle; however, there was no runway remaining to affect a landing. The CFI used engine power to maintain aircraft pitch control and setup for an off-airport landing. The nose landing gear dug into the soft ground after the airplane touched down and the aircraft nosed over. A Federal Aviation Administration inspector examined the airplane on scene. He removed the empennage inspection panel and found the DOWN elevator cable lying on the floor of the empennage. The safety wire for the DOWN elevator cable had been cut and pulled from the center hole, which allowed the turnbuckle to rotate until it separated from the turnbuckle eye. The other end remained attached to the swaged terminal by two threads. The UP elevator cable turnbuckle safety wire had also been cut on the eye side and pulled out of the center hole of the turnbuckle. The eye remained engaged in the turnbuckle by 19 3/4 turns, and the terminal end remained engaged by 18 1/2 turns. The flight control system was inspected with no further discrepancies noted. A review of the aircraft maintenance records, and shop work orders from maintenance facilities that had worked on the airplane, revealed no instances of maintenance activity that would have involved disturbing the elevator control cable turnbuckles since November 2000. The last annual inspection was completed 8 months and 75 flight hours prior to the accident; both the mechanic and inspector who performed the annual reported that the elevator control system was secure at that point. ## Factual narrative HISTORY OF FLIGHT On May 31, 2003, at 0617 Pacific daylight time, a Cessna 182Q, N4892N, nosed over during a forced landing at the Lake Tahoe Airport (TVL), South Lake Tahoe, California. The Civil Air Patrol (CAP) operated the airplane as a public-use flight under the provisions of 14 CFR Part 91. The airplane sustained substantial damage. The certified flight instructor (CFI) received minor injuries. The private pilot and one passenger were not injured. Visual meteorological conditions prevailed for the cross-country flight to the Winnemucca Municipal Airport (WMC), Winnemucca, Nevada. In an interview with the National Transporation Safety Board investigator-in-charge (IIC), the flying pilot stated that they were activated for a mission to search for a missing aircraft. They were repositioning to WMC, where the search was being coordinated. A safety briefing was conducted, in which the pilot and the CFI discussed flight duties. If a problem were to occur, the CFI would take the flight controls and fly the airplane. The flying pilot conducted a normal preflight that included checking the fuel, oil, and flight control surfaces. They boarded the airplane, and he started the engine according to the airplane's approved checklist. He again checked the flight controls, with no discrepancies encountered. He taxied the airplane to runway 36, conducted a run-up (per the manufacturer's checklist), and set the mixture per the takeoff checklist. The flying pilot applied the throttle as the airplane rolled out onto the runway. He called airspeed "alive" between 40-50 knots, and then called the airplane off the ground (60 knots). He flattened the nose to gain airspeed; the nose pitched up, and he pushed the yoke forward to lower the nose. The airplane remained in a nose high attitude. At that point the CFI called "my plane," and the flying pilot responded with "your plane." The pilot stated that the CFI flew the airplane from that point on. He indicated that the CFI pushed the yoke forward and "shook" the airplane to try and loosen the flight controls. The nose high condition remained and the flying pilot assisted the CFI by raising the flaps and helping to keep the yoke in the forward position. He indicated that the rear passenger moved forward to see if the weight redistribution would help. The airplane was now beyond the airport environment. According to the CFI's written statement, the flying pilot conducted the preflight utilizing the airplane checklist. They boarded the airplane and conducted the pre-taxi checklist, which included "full and visual deflection of controls; free and correct," as well as, a crew briefing. The crew briefing included an agreement that the flying pilot would perform the takeoff; however, if any abnormality should arise, the CFI would assume control of the airplane with the standard exchange of controls through repetitive verbal confirmation. The flying pilot taxied to the active runway where the run-up checklist was performed, which included a second visual check of full deflection of the flight controls. No abnormalities were noted. She had the observer record the time, 0615. After that a 360-degree turn was conducted to check for area traffic and any oil leaks that may have occurred during the run-up. She announced their departure on the common traffic advisory frequency, and the pilot taxied into position. The flying pilot applied power, "called out instruments in the green, airspeed alive, and rotated at 60 knots indicated airspeed." There were no discrepancies noted with the takeoff. As the flying pilot pushed the nose forward to gain airspeed, the airplane "suddenly and severely pitched up." The CFI noted that the flying pilot had the yoke in the full forward position; however, the angle of attack continued to rise. The flying pilot stated that they had a problem, and she took over the flight controls. At that point both pilot's pushed forward on the yoke, but there was no change in the nose high angle of attack. She knew that a departure stall was imminent, so she reduced the power and removed 10 degrees of flaps. The observer in the rear seat moved forward in order to shift more weight to the front of the airplane. The CFI reported that the nose lowered and she regained control of the airplane, but there was no runway left on which to land. She reapplied power to control the pitch and chose a suitable place to make a forced landing. During the forced landing she attempted to reduce the power by retarding the throttle. There was no response from the engine. She continued her attempts to reduce the power by "firmly adjusting the throttle to idle position" with no response. She redirected the airplane's heading towards tall brush in order to slow the airplane down. The airplane plowed through the brush, which reduced the airplane's airspeed. The CFI reported that the airplane touched down on its main landing gear. Both pilots reported that after the airplane touched down the nose landing gear collapsed and dug into the soggy ground, and nosed over. They conducted the emergency procedures to evacuate the airplane. The observer reported that after takeoff the climb out was normal, but "continued at what I felt would end in a power stall." He shifted his weight forward, and saw both pilots pushing forward on the yokes. The airplane leveled off and the CFI retracted the flaps to zero. A deputy from El Dorado County Sheriff's Office interviewed the flying pilot. The flying pilot reported that after takeoff he and the others noticed that the airplane's tail was "extremely low and would not respond to corrections." Both he and the CFI forced the yoke forward to drop the nose of the airplane. The flying pilot stated that they felt the airplane was going to stall, at which point the CFI took over the flight controls. He tried to shut down the engine, but it "kept revving." The flying pilot stated that the CFI intentionally clipped willow bushes with the airplane on the way down as a means to reduce the airspeed, thereby slowing down the airplane to aid with the forced landing. PERSONNEL INFORMATION Certified Flight Instructor A review of Federal Aviation Administration (FAA) airman records revealed the pilot held a commercial pilot certificate with an airplane single and multiengine land ratings and an instrument airplane rating. The pilot also held a certified flight instructor certificate with an airplane single engine land rating. According to Civil Air Patrol (CAP) records, the pilot's last CAP pilot flight evaluation was conducted on February 17, 2003. The evaluation included, CAP's annual standardization, instructor/check pilot, cadet orientation, and FAA biennial flight review. The pilot held a first-class medical certificate issued on January 20, 2003. It contained the limitation that the pilot shall wear correcting lenses while exercising the privileges of her airman certificate. According to the FAA, the pilot had an estimated total flight time of 778 hours. She logged 6 hours in the last 90 days, and had an estimated 200 hours in this make and model. Flying Pilot A review of FAA airman records revealed the flying pilot held a private pilot certificate with an airplane single engine land rating. The pilot held a third-class medical certificate issued on July 29, 2001. It had the limitations that the pilot must wear lenses for distant vision, and have glasses for near vision. According to the pilot's FAA airman medical application, the pilot reported an estimated total flight time of 170 hours, with an estimated 10 hours in the last 6 months in the accident make and model. AIRCRAFT INFORMATION The airplane was a 1979 single engine Cessna 182Q, serial number 18267441. A review of the airplane's logbooks revealed a total airframe time of 3,665.5 hours at the last annual inspection. An annual ins ## Aircraft - Registration: [N4892N](https://openairdocs.org/deregistered/N4892N-2013-05-06), registration cancelled 2013-05-06, S/N 18267441, built 1979 (OpenAirDocs) - Reported make and model: Cessna 182Q - Registry model: [Cessna 182Q](https://openairdocs.org/model/cessna-182q) (registry code 2072732) (OpenAirDocs) - Registry engine: [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series) (registry code 17026, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 18267441 - Airframe hours: 3740.8 - Engines: Teledyne Continental O-470-U 230 horsepower reciprocating - Damage: Substantial damage - Flight: Public aircraft, Part 91 - Registered owner: Civil Air Patrol - Airworthiness certificate: Standard, Normal - Last inspection: Annual, August 1, 2002, 75 hours before - Departed: TVL, So Lake Tahoe, CA - Destination: WMC, Winnemucca, NV - Flight plan: Company VFR ## Flight crew As NTSB recorded them. NTSB leaves out names. - Flight instructor; age 51; injuries: minor; flight instructor, commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1; last flight review February 1, 2003; seat: right; flight hours: 778 total, 200 in this make and model, 6 in the last 90 days - Student pilot; age 53; injuries: none; private; airplane ratings: single-engine land; medical: class 3; seat: left; flight hours: 170 total ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 36 °F, dew point 32 °F - Altimeter: 30.15 inHg - Observed at: TVL, 2 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 20030531011699A](https://openairdocs.org/incident/20030531011699A), May 31, 2003: Cessna 182Q, South Lake Taho, CA, Destroyed. (-23) Pilot's statement: dear Mr. Roche, thank you for your time and evaluation of the incident at tvl on Saturday, 05-31-03. The following is the statement… ## Other investigations on N4892N (1) 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. - [NTSB LAX00TA269](https://openairdocs.org/ntsb/LAX00TA269), Jul 2, 2000: Cessna 182Q (N4892N), So. Lake Tahoe, CA, substantial damage. Probable cause: failure of the pilot to maintain an adequate airspeed margin resulting in a stall and hard landing. ## Docket (13 files) The files NTSB released with the investigation on July 10, 2006, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=57113. 7.0 MB in all. - Pilot Statements (item 1, .PDF, 121 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40468481&FileExtension=.PDF&FileName=Pilot%20Statements-Master.PDF - Passenger Statement (item 2, .PDF, 52 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40260924&FileExtension=.PDF&FileName=Passenger%20Statement-Redacted.PDF - Photo 1 - Elevator DOWN Turnbuckle (Cessna) (item 3, .PDF, 1.6 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40260925&FileExtension=.PDF&FileName=Photo%201%20-%20Elevator%20DOWN%20Turnbuckle%20(Cessna)-Master.PDF - Photo 2 - Elevator UP Turnbuckle (Cessna) (item 4, .PDF, 1.6 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40260926&FileExtension=.PDF&FileName=Photo%202%20-%20Elevator%20UP%20Turnbuckle%20(Cessna)-Master.PDF - Photo 3 - Flight Time Log (Cessna) (item 5, .PDF, 1.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40260927&FileExtension=.PDF&FileName=Photo%203%20-%20Flight%20Time%20Log%20(Cessna)-Master.PDF - FAA Inspectors Statement (item 6, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40260928&FileExtension=.PDF&FileName=FAA%20Inspectors%20Statement-Redacted.PDF - El Dorado County Sheriff's Report includes wreckage diagram (item 7, .PDF, 158 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40260931&FileExtension=.PDF&FileName=El%20Dorado%20County%20Sheriff%27s%20Report%20includes%20wreckage%20diagram-Redacted.PDF - Excerpt of Cessna Aircraft Report (item 8, .PDF, 97 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40260932&FileExtension=.PDF&FileName=Excerpt%20of%20Cessna%20Aircraft%20Report-Redacted.PDF - Airframe Records (item 9, .PDF, 892 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40260933&FileExtension=.PDF&FileName=Airframe%20Records-Redacted.PDF - Excerpt from Engine Logbook (item 10, .PDF, 296 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40260934&FileExtension=.PDF&FileName=Excerpt%20from%20Engine%20Logbook-Redacted.PDF - Statement of Party Representatives to NTSB Investigation (item 11, .PDF, 199 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40260935&FileExtension=.PDF&FileName=Statement%20of%20Party%20Representatives%20to%20NTSB%20Investigation-Redacted.PDF - Release of Aircraft Wreckage, NTSB Form 6120.15 (item 12, .PDF, 27 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40260936&FileExtension=.PDF&FileName=Release%20of%20Aircraft%20Wreckage,%20NTSB%20Form%206120.15-Master.PDF - Release of Aircraft Wreckage, NTSB Form 6120.15 (item 13, .PDF, 40 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40263087&FileExtension=.PDF&FileName=Release%20of%20Aircraft%20Wreckage,%20NTSB%20Form%206120.15-Redacted.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.