# NTSB LAX99LA018: Beech C90, N37PT, Sedona, AZ, October 27, 1998 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: October 27, 1998, 13:28 local (20:28 UTC) - Place: Sedona, AZ - Coordinates: 34.939472, -111.939865 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=34.9395&lon=-111.9399&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report June 21, 2000 - Report: Approved by Office Director - NTSB case key (mKey): 45323 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX99LA018 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/45323/pdf - Page: https://openairdocs.org/ntsb/LAX99LA018 ## Probable cause The instructor's failure to maintain runway alignment during the takeoff roll. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - On ground/water collision with object, takeoff - roll/run - object - airport facility - proper alignment - not maintained, pilot in command(cfi) (cause) ## Analysis The certificated flight instructor (CFI) and student pilot departed on a local training flight. During the takeoff roll, the airplane began drifting to the right. The CFI applied full left rudder and left aileron but was unable to stop the drift. After the CFI rotated, he heard the gear warning horn. After becoming airborne, he was advised by another airplane that his right gear was not visible. He was also advised by an FBO operator that his right gear was missing. Concerned that he might also have a fuel leak, the CFI declared an emergency and landed. An inspection of the runway revealed a tire track which left the right side of the runway 1,050 feet from the approach end and continued into the grass to an electrical service box on the right side of the runway. Cracks and gouges were found on the cement electrical service box and the right main gear assembly was found on the ground beyond it. The fractured portion of the upper torque link revealed characteristics consistent with an overstress separation. The CFI and ground witnesses said weather was not a factor. ## Factual narrative On October 27, 1998, at 1328 hours mountain standard time, a Beech C90, N37PT, veered off the runway and collided with an electrical utility box during takeoff at the Sedona, Arizona, airport. The aircraft sustained substantial damage; however, neither the flight instructor nor his student was injured. The aircraft was being operated by Hayden Leasing LC under 14 CFR Part 91 of Federal Aviation Regulations as an instructional flight when the accident occurred. The flight was originating from the Sedona airport as a cross-country flight to Scottsdale, Arizona. Visual meteorological conditions prevailed at the time and no flight plan was filed. The instructor reported that he was taking off on runway 21 at Sedona when the aircraft began drifting to the right as he accelerated through 80 knots. He checked the power and found it stabilized at 1,230 pounds of torque. He applied full left rudder and 3/4 left aileron to counteract the turn but was unable to stop the drift. He rotated at 90 knots and immediately heard the sound of the gear warning horn. After becoming airborne, he was advised by another aircraft that his right gear was not visible. Instead of retracting the gear, he made a low pass over the field for further visual confirmation. He was advised by an FBO operator on the field that his right gear assembly was missing. The pilot informed the FBO operator that he was going to continue to Scottsdale, but a few minutes later decided that it was possible that the loss of the gear assembly might have also initiated a fuel leak. At this point, he declared an emergency with Albuquerque center and made and emergency landing at Ernest A. Love Field, Prescott, Arizona. During the landing roll the pilot shutdown the right engine and feathered the propeller. At 55 knots he gradually lowered the right wing toward the runway. As the wing contacted the runway, the aircraft began a right arc off the runway, coming to rest between the runway and taxiway. An inspection of the runway at the Sedona airport revealed tire tracks diverging from the right side of the runway at 1,050 feet from the approach end. The track continued until it terminated at a cement electrical service box 322 feet from the point where the tracks left the runway. Impact marks were found on the cement box and the right main gear assembly was found on the ground about 152 feet beyond the box. The fractured portion of the upper torque link was submitted to the Safety Board's Materials Lab for examination. The examination revealed the fracture surface exhibited characteristics consistent with an overstress separation. The instructor and the ground witnesses said weather was not a factor in this accident. ## Aircraft - Registration: N37PT (not matched to a registry record) - Reported make and model: Beech C90 - Category: Airplane - Serial number: LJ-731 - Airframe hours: 11103 - Engines: P&W PT6A-21 550 horsepower turbo prop - Damage: Substantial damage - Flight: Instructional, Part 91 - Registered owner: Hayden Leasing, Lc - Airworthiness certificate: Standard, Normal - Last inspection: Continuous airworthiness, August 25, 1998, 82 hours before - Departed: SEZ, AZ - Destination: SDL, SCOTTSDALE, AZ - Airport: SEZ, Sedona, runway 21, 5,132 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 54; airline transport, commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: helicopter, airplane; medical: class 2, valid medical--no waivers/lim.; seat: right; flight hours: 15,000 total, 2,000 in this make and model, 7,500 as pilot in command ## Weather - Conditions: Visual (VMC), Day - Wind: 170° at 6 knots - Visibility: 10 statute miles - Lowest ceiling: 6,500 ft broken - Temperature: 57 °F, dew point 30 °F - Observed at: PRC, 33 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 19981027034779A](https://openairdocs.org/incident/19981027034779A), Oct 27, 1998: Beech C90, Sedona, AZ, Substantial damage. On October 27, 1998, at 1328 hours mountain standard time, a Beech C90, N37PT, ran off the runway and collided with an electrical utility box during takeoff at… 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.