# NTSB CHI94LA332: Cessna 170, N4216V, St. Anne, IL, September 18, 1994 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: September 18, 1994, 15:45 local (20:45 UTC) - Place: St. Anne, IL - Coordinates: 41.019226, -87.709983 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=41.0192&lon=-87.7100&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report January 18, 1995 - Report: Approved by Office Director - NTSB case key (mKey): 9685 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI94LA332 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/9685/pdf - Page: https://openairdocs.org/ntsb/CHI94LA332 ## Probable cause ENGINE FAILURE DUE TO AN INADEQUATELY RECONDITIONED CYLINDER. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(partial) - mech failure/malf, cruise - engine assembly,cylinder - corroded (cause) - maintenance,rebuild/remanufacture - inadequate, other maintenance personnel (cause) - Forced landing, emergency landing - On ground/water collision with object, emergency landing - object - utility pole ## Analysis WHILE EN ROUTE, THE PILOT HEARD A REPETITIVE LOUD KNOCKING SOUND FROM THE ENGINE. THE EXHAUST GAS TEMPERATURE GAGE SHOWED A RAPID DROP, AND THE ENGINE BEGAN TO SURGE. UNABLE TO MAINTAIN ALTITUDE, THE PILOT ELECTED TO MAKE AN EMERGENCY LANDING. AN EXTREMELY LOUD BANG WAS THEN HEARD, AND THE UPPER PART OF THE COWLING BLEW OPEN AND BACK TOWARD THE WINDSHIELD. THE PILOT SWITCHED THE FUEL SELECTOR TO THE OFF POSITION, CLOSED THE THROTTLE, PULLED THE MIXTURE CONTROL TO IDLE CUT-OFF, AND MADE A FORCED LANDING ON A ROAD. DURING THE LANDING ROLL, THE RIGHT WING STRUCK A POLE WHICH WAS LOCATED ON THE SIDE OF THE ROAD. POSTACCIDENT EXAMINATION REVEALED THE #2 CYLINDER HAD FRACTURED. CORROSION WAS VISIBLE ON THE FRACTURE SURFACES. MAINTENANCE RECORDS SHOWED THAT THE CYLINDER WAS REPLACED WITH A RECONDITIONED CYLINDER AT THE LAST ANNUAL INSPECTION ON 5/1/94. THE AIRPLANE HAD LOGGED 65 HRS SINCE THE INSPECTION. ## Factual narrative On September 18, 1994, at 1545 central daylight time, a Cessna 170, N4216V, sustained substantial damage following a loss of engine power and subsequent forced landing on a road in St. Anne, Illinois. The pilot reported no injuries. The 14 CFR Part 91 personal flight departed Green County, Ohio, at 1300 with an intended destination of Kankakee, Illinois. The flight operated in visual meteorological conditions without flight plan. In a written statement, the pilot reported that while approximately 20 miles from Kankakee, he heard a repetitive loud knocking sound from the engine. The exhaust gas temperature gauge showed a rapid drop and the engine began to surge. The pilot was unable to maintain altitude. The pilot stated he then heard an extremely loud bang and the upper part of the cowling blew open and back towards the windshield. He turned the fuel selector to the off position, closed the throttle, and pulled the mixture to idle cut-off. The pilot made a forced landing on a road. During the landing roll, the right wing struck a telephone pole which was located on the side of the road. Postaccident examination revealed the number two cylinder had fractured mid barrel. Corrosion was visible on the fractured surfaces. Maintenance records for the airplane indicate the number two cylinder was replaced by a reconditioned cylinder at the last annual inspection performed on May 1, 1994. The airplane had logged 65 hours since the inspection. ## Aircraft - Registration: [N4216V](https://openairdocs.org/deregistered/N4216V-2018-02-13), registration cancelled 2018-02-13, S/N 18572, built 1948 (OpenAirDocs) - Reported make and model: CESSNA 170 - Registry model: [Cessna 170](https://openairdocs.org/model/cessna-170) (registry code 2072302) (OpenAirDocs) - Registry engine: [Continental C145 series](https://openairdocs.org/engine/continental-c145-series) (registry code 17012, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 18572 - Airframe hours: 3032 - Engines: CONTINENTAL C-145-2 145 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Todd W. Deckard - Registered owner: Todd W. Deckard - Airworthiness certificate: Standard, Utility - Last inspection: Annual, May 1, 1994, 65 hours before - Departed: I19, GREEN COUNTY, OH - Destination: IKK, KANKAKEE, IL ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 29; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 252 total, 64 in this make and model, 159 as pilot in command, 45 in the last 90 days, 19 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 340° at 6 knots - Visibility: 25 statute miles - Lowest ceiling: none - Temperature: 75 °F ## 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 19940918028139A](https://openairdocs.org/incident/19940918028139A), Sep 18, 1994: Cessna 170, St Anne, IL, Substantial damage. Loud engine knock and loud bang. Cowling separated. Hit pole landing on road. NR2 cyl had fractured. Recent annual. ## Other investigations on N4216V (2) 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 ERA14LA050](https://openairdocs.org/ntsb/ERA14LA050), Oct 8, 2013: Cessna 170 (N4216V), Ridgely, MD, substantial damage. Probable cause: A total loss of engine power for reasons that could not be determined based on the available evidence. - [NTSB UNK64X2302](https://openairdocs.org/ntsb/UNK64X2302), Jun 15, 1964: Cessna 150 (N4216V), Sanger, CA, substantial 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.