# NTSB DFW07LA024: Beech A36, N711A, Pocasset, OK, November 12, 2006 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: November 12, 2006, 14:45 local (20:45 UTC) - Place: Pocasset, OK - Coordinates: 35.187221, -97.971946 - Nearby events: https://openairdocs.org/map.md?lat=35.1872&lon=-97.9719&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report March 26, 2007 - Report: Approved by Office Director - Parties: Federal Aviation Administration - NTSB case key (mKey): 64851 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DFW07LA024 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/64851/pdf - Page: https://openairdocs.org/ntsb/DFW07LA024 ## Probable cause The "abnormally high" oil temperature indication and smoke in the cabin for undetermined reasons. A contributing factor was the lack of suitable terrain for the precautionary landing. ## Analysis While on a local pleasure flight, the 4,942-hour private pilot observed an "abnormally high" oil temperature indication before smoke began to come from beneath the instrument panel. The pilot elected to shut the engine down and perform a precautionary landing to a soft and hilly field. During landing, the left wing tip impacted the ground and the nose landing gear was sheared off. The airplane came to rest in an upright position and the pilot was able to exit the airplane unassisted. There was no fire. Examination of the airplane did not reveal the source of the smoke or the reason for the "abnormally high" oil temperature indication. ## Factual narrative On November 12, 2006, about 1445 central standard time, a single-engine Beech A36 airplane, N711A, was substantially damaged during a precautionary landing following an observation of a high engine oil temperature indication and smoke in the cockpit, while in cruise flight near Pocasset, Oklahoma. The private pilot, sole occupant of the airplane, sustained minor injuries. The airplane was registered to and operated by the pilot. Visual meteorological conditions prevailed and no flight plan was filed for the 14 Code of Federal Regulations Part 91 personal flight. The local flight originated from the Chickasha Municipal Airport (CHK), near Chickasha, Oklahoma, approximately 1435. According to the 4,492-hour pilot, while on a local pleasure flight, he observed an "abnormally high" oil temperature indication before smoke began to come from beneath the instrument panel. The pilot elected to shut the engine down and perform a precautionary landing to a soft and hilly field. During precautionary landing, the left wing tip collided withe the ground and the nose landing gear was sheared-off. The airplane came to rest in an upright position and the pilot was able to exit the airplane unassisted. There was no fire. An inspector from the Federal Aviation Administration (FAA) responded to the accident site. The inspector reported that the airplane's right wing and the engine firewall sustained structural damage. The inspector further reported that he had examined the airplane and could not find the source of the smoke. A NTSB representative examined the airplane at a later date. The engine nacelle area and engine exterior was found clean with no obvious oil leaks. The oil dipstick was removed and indicated clean oil in the oil sump. The cabin heater valve and defrost knobs were found in the "ON" position. The heater shroud was removed and the muffler visually examined. No defects were noted. The instrument access panel, located in the firewall, was removed and the area behind the instrument panel was visually examined via a flashlight and mirror. The electrical wiring did not appear damaged and there were no signs of electrical arcing or fire. The area around the landing gear motor was also examined and no abnormalities were noted. The examination did not reveal the source of the smoke or the reason for the "abnormally high" oil temperature indication. The pilot further reported that at the time of departure the wind was from 170 degrees at 20 knots gusting to 25 knots. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Miscellaneous/other, cruise - fuselage,cabin - smoke (cause) - engine instruments,oil temperature gage - overtemperature (cause) - reason for occurrence undetermined - Miscellaneous/other, emergency descent/landing - precautionary landing - performed, pilot in command - Hard landing, emergency descent/landing - terrain condition - none suitable (contributing factor) - weather condition - gusts ## Aircraft - Registration: [N711A](https://openairdocs.org/deregistered/N711A-2009-09-15), registration cancelled 2009-09-15, S/N BB696 (OpenAirDocs) - Reported make and model: Beech A36 - Registry model: [Beech 200](https://openairdocs.org/model/beech-200) (registry code 1152920) (OpenAirDocs) - Category: Airplane - Serial number: E-1428 - Airframe hours: 1966 - Engines: Teledyne Continental IO-520B 300 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Green and Green - Airworthiness certificate: Standard, Utility - Last inspection: Annual, December 1, 2005 - Departed: CHK, Chickasha, OK ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 56; injuries: minor; private; airplane ratings: multi-engine land, single-engine land; medical: class 3, without waivers/limitations; last flight review August 1, 2005; seat: right; flight hours: 4,942 total, 1,166 in this make and model, 4,942 as pilot in command, 13 in the last 90 days, 4 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 170° at 20 knots, gusting 25 - Visibility: 10 statute miles - Lowest ceiling: 5,000 ft overcast ## 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 20061112030779A](https://openairdocs.org/incident/20061112030779A), Nov 12, 2006: Beech A36, Pocasset, OK, Substantial damage. (-23) On November 11, 2006 at approximately 1530 CST N711A a BE-36-A36 departed chickasha ok on a VFR local flight. While over minco, OK (13 miles north of… From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; 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.