# NTSB ANC93LA016: Cessna 185, N20752, Point Hope, AK, November 28, 1992 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: November 28, 1992, 11:23 local (15:23 UTC) - Place: Point Hope, AK - Coordinates: 68.699462, -164.809616 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=68.6995&lon=-164.8096&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report September 28, 1993 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - NTSB case key (mKey): 5852 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC93LA016 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5852/pdf - Page: https://openairdocs.org/ntsb/ANC93LA016 ## Probable cause THE FAILURE OF THE NO. TWO CYLINDER CONNECTING ROD DUE TO A SLIPPED (SPUN) MAIN CRANKSHAFT BEARING WHICH BLOCKED OFF THE OIL HOLE TO THE CONNECTING ROD. A FACTOR IN THE ACCIDENT WAS THE UNSUITABLE TERRAIN ON WHICH TO PERFORM A FORCED LANDING. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(total) - mech failure/malf, climb - to cruise - engine assembly,bearing - slipped (cause) - lubricating system,oil port/passage,internal - blocked(total) (cause) - fluid,oil - starvation (cause) - engine assembly,connecting rod - failure,total (cause) - Forced landing, descent - emergency - Main gear collapsed, landing - terrain condition - none suitable (contributing factor) - Nose down, landing - roll ## Analysis THE ENGINE FAILED ABOUT 5 TO 6 MINUTES AFTER TAKEOFF DURING THE CLIMB TO CRUISE PHASE OF OPERATION. THE PILOT MADE AN OFF AIRPORT FORCED LANDING ON AN ICE FLOW. AT THE TIME OF THE ACCIDENT, THE PART 135 OPERATOR WAS REPOSITIONING THE AIRPLANE UNDER PART 91. THE CAUSE OF THE ENGINE FAILURE WAS TRACED TO A SPUN CRANKSHAFT BEARING WHICH BLOCKED OFF THE OIL HOLE TO THE NO. 2 CYLINDER CONNECTING ROD, RESULTING IN ITS CATASTROPHIC FAILURE. THE SPUN BEARING MOST LIKELY WAS THE RESULT OF EITHER A LOSS OF TORQUE OR INSUFFICIENT TORQUE BEING APPLIED TO THE CRANKCASE THRU STUD BOLTS. ## Aircraft - Registration: [N20752](https://openairdocs.org/aircraft/N20752), registered now, S/N 18503041, built 1976 (OpenAirDocs) - Reported make and model: CESSNA 185 - Registry model: [Cessna A185F](https://openairdocs.org/model/cessna-a185f) (registry code 2072821) (OpenAirDocs) - Category: Airplane - Serial number: 18503041 - Airframe hours: 3179 - Engines: CONTINENTAL IO-520-D 300 horsepower reciprocating - Damage: Substantial damage - Flight: Positioning, Part 91 - Operator: Cape Smythe Air Service - Airworthiness certificate: Standard, Normal - Last inspection: Continuous airworthiness, November 6, 1992, 20 hours before - Departed: PHO - Destination: OTZ, KOTZEBUE, AK - Flight plan: VFR ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 23; airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: front; flight hours: 2,600 total, 19 in this make and model, 2,200 as pilot in command, 350 in the last 90 days, 100 in the last 30 days, 5 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 45° at 15 knots, gusting 18 - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 9 °F - Altimeter: 29.00 inHg ## 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 19921128049509A](https://openairdocs.org/incident/19921128049509A), Nov 28, 1992: Cessna A185F, Point Hope, AK, Substantial damage. Engine seized on climb to cruise. Landed on ice flow. Connecting rod failed from spun bearing. Blocked oil flow. ## Other investigations on N20752 (7) 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 ANC00LA099](https://openairdocs.org/ntsb/ANC00LA099), Aug 12, 2000: Cessna 185F (N20752), Barrow, AK, substantial damage. Probable cause: The pilot's selection of unsuitable terrain for landing. A factor in the accident was a hidden obstruction, and soft terrain. - [NTSB ANC97LA131](https://openairdocs.org/ntsb/ANC97LA131), Aug 25, 1997: Cessna 185F (N20752), Barrow, AK, substantial damage. Probable cause: the pilot's inadequate compensation for wind conditions, and his failure to maintain directional control of the airplane, which resulted in a ground swerve and damage to the airplane. A factor… - [NTSB ANC96LA114](https://openairdocs.org/ntsb/ANC96LA114), Aug 2, 1996: Cessna 185 (N20752), Wainwright, AK, substantial damage. Probable cause: The pilot's excessive application of the brakes during the landing roll. - [NTSB ANC95LA003](https://openairdocs.org/ntsb/ANC95LA003), Oct 15, 1994: Cessna A185F (N20752), Kotzebue, AK, substantial damage. Probable cause: A FAILURE OF THE PILOT TO MAINTAIN ADEQUATE DISTANCE FROM THE TERRAIN (SNOW BANK). FLAT LIGHTING AND LOW CONTRAST CONDITIONS WERE FACTORS IN THE ACCIDENT. - [NTSB ANC93LA147](https://openairdocs.org/ntsb/ANC93LA147), Aug 14, 1993: Cessna 185 (N20752), Point Barrow, AK, substantial damage. Probable cause: FUEL EXHAUSTION AS A RESULT OF THE PILOT IN COMMAND'S NOT REFUELING. A FACTOR IN THE ACCIDENT WAS THE OPERATOR/MANAGEMENT INADEQUATE FLIGHT FOLLOWING AND OPERATIONAL CONTROL OVER THE FLIGHT. - [NTSB ANC92LA067](https://openairdocs.org/ntsb/ANC92LA067), May 3, 1992: Cessna C-A185F (N20752), Barrow, AK, substantial damage. Probable cause: THE IMPROPER USE OF THE FLT CONTROLS BY THE SECOND PILOT DURING LANDING ROLL. FACTORS RELATING TO THE MISHAP WERE THE ROUGH/UNEVEN SNOW COVERED TERRAIN. - [NTSB ANC89IA019](https://openairdocs.org/ntsb/ANC89IA019), Nov 22, 1988: Cessna A185F (N20752), Deadhorse, AK, incident, no damage 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.