# NTSB CHI07CA058: Learjet 35A, N40AN, Columbus, OH, January 10, 2007 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: January 10, 2007, 03:30 local (08:30 UTC) - Place: Columbus, OH - Coordinates: 39.81361, -82.92778 - Nearby events: https://openairdocs.org/map.md?lat=39.8136&lon=-82.9278&mi=10 - Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report March 26, 2007 - Report: Approved by Office Director - Parties: Federal Aviation Administration, Cleveland FSDO - NTSB case key (mKey): 65282 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI07CA058 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/65282/pdf - Page: https://openairdocs.org/ntsb/CHI07CA058 ## Probable cause The pilot's failure to maintain aircraft control during an inflight maneuver which resulted in the design stress limits of the airplane being exceeded. A factor was the excessive airspeed encountered during recovery. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Airframe/component/system failure/malfunction, maneuvering - airspeed - excessive, pilot in command (contributing factor) - design stress limits of aircraft - exceeded, pilot in command (cause) - aircraft control - not maintained, pilot in command (cause) ## Analysis The airplane was substantially damaged during an in-flight recovery after the captain attempted an intentional aileron roll maneuver during cruise flight and lost control. The cargo flight was being operated at night under the provisions of 14 CFR Part 135 at the time of the accident. The captain reported the airplane was "functioning normally" prior to the intentional aileron roll maneuver. The captain stated that the "intentional roll maneuver got out of control" while descending through flight level 200. The captain reported that the airplane "over sped" and experienced "excessive G-loads" during the subsequent recovery. The copilot reported that the roll maneuver initiated by the captain resulted in a "nose-down unusual attitude" and a "high speed dive." Inspection of the airplane showed substantial damage to the left wing and elevator assembly. ## Factual narrative The airplane was substantially damaged during an in-flight recovery after the captain attempted an intentional aileron roll maneuver during cruise flight and lost control. The cargo flight was being operated at night under the provisions of 14 CFR Part 135 at the time of the accident. The captain reported the airplane was "functioning normally" prior to the intentional aileron roll maneuver. The captain stated that the "intentional roll maneuver got out of control" while descending through flight level 200. The captain reported that the airplane "over sped" and experienced "excessive G-loads" during the subsequent recovery. The copilot reported that the roll maneuver initiated by the captain resulted in a "nose-down unusual attitude" and a "high speed dive." Inspection of the airplane showed substantial damage to the left wing and elevator assembly. ## Aircraft - Registration: [N40AN](https://openairdocs.org/deregistered/N40AN-2008-03-25), registration cancelled 2008-03-25, S/N 271, built 1979 (OpenAirDocs) - Reported make and model: Learjet 35A - Registry model: [Learjet 35A](https://openairdocs.org/model/learjet-35a) (registry code 5170802) (OpenAirDocs) - Registry engine: [Garrett TFE731 series](https://openairdocs.org/engine/garrett-tfe731-series) (registry code 29001, turbo-fan) (OpenAirDocs) - Category: Airplane - Serial number: 35-271 - Airframe hours: 20332 - Engines: Garrett TFE-731-2C-2B 3400 lbs thrust turbo fan; Garrett TFE-731-2C-2B 3400 lbs thrust turbo fan - Damage: Substantial damage - Flight: Part 135 - Registered owner: AirNet Systems, Inc. - Airworthiness certificate: Standard, Transport - Last inspection: AAIP, October 1, 2006 - Departed: JAX, Jacksonville, FL - Destination: LCK, Columbus, OH - Flight plan: IFR - Airport: LCK, Rickenbacker International ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 30; injuries: none; airline transport, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, without waivers/limitations; last flight review September 1, 2006; seat: left; flight hours: 6,400 total, 1,700 in this make and model, 5,300 as pilot in command, 150 in the last 90 days, 50 in the last 30 days, 5 in the last 24 hours - Co-pilot; age 29; injuries: none; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, with waivers/limitations; last flight review May 1, 2006; seat: right; flight hours: 3,500 total, 600 in this make and model, 2,900 as pilot in command, 300 in the last 90 days, 100 in the last 30 days, 5 in the last 24 hours ## Weather - Conditions: Visual (VMC), Night - Wind: 290° at 12 knots - Visibility: 10 statute miles - Lowest ceiling: 2,800 ft broken - Temperature: 34 °F, dew point 45 °F - Altimeter: 30.25 inHg - Observed at: LCK ## 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 20070110002269A](https://openairdocs.org/incident/20070110002269A), Jan 10, 2007: Lear 35A, Beaver, OH, Destroyed. (-23) On January 10, 2007, the pilot [privacy data omitted], the pilot in command of Learjet 35A, N40AN, operating star-check route 141 from jacksonville,… 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.