# NTSB LAX86LA358: Bellanca 8GCBC, N87020, Chino, CA, October 1, 1986 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: September 30, 1986, 17:10 local (Oct 1, 1986, 00:10 UTC) - Place: Chino, CA - Coordinates: 34.000125, -117.680618 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=34.0001&lon=-117.6806&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed - Report: Approved by Office Director - NTSB case key (mKey): 25266 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX86LA358 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/25266/pdf - Page: https://openairdocs.org/ntsb/LAX86LA358 ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power, approach - vfr pattern - downwind - reason for occurrence undetermined (cause) - load jettison - performed, pilot in command (contributing factor) - altitude - inadequate, pilot in command (contributing factor) - Forced landing, descent - emergency - Main gear collapsed, landing - roll - terrain condition - rough/uneven (contributing factor) - terrain condition - soft (contributing factor) - ground loop/swerve - inadvertent, pilot in command (contributing factor) ## Analysis THE ACFT GROUND LOOPED IN A FRESHLY PLOWED FIELD DURING A FORCED LANDING AFTER COMPLETING A BANNER TOW OPERATION. THE PLT INDICATED THAT HE HAD JUST ENTERED A DOWNWIND TRAFFIC PATTERN FOR THE BANNER RELEASE AREA WHEN THE ENG BEGAN TO RUN ROUGH AND LOSE POWER. HE MOVED THE MIXTURE CONTROL TO THE FULL RICH POSITION AND PUMPED THE THROTTLE. THE ENG REGAINED POWER MOMENTARILY AND THEN QUIT. THE ACFT WAS APRX 600 FT AGL AND THE PLT DECIDED NOT TO ATTEMPT A RESTART. HE RELEASED THE BANNER AND LANDED INTO THE WIND ON A FRESHLY PLOWED FIELD. THE ACFT'S RIGHT MAIN LANDING GEAR COLLAPSED ON LANDING ROLL. THE ACFT WAS TRANSPORTED TO THE ARPT AND THE ENG WAS RUN WITHOUT INCIDENT AND WAS CAPABLE OF PRODUCING FULL POWER. IT WAS NOTED THAT THE FLAME TUBE LOCATED IN THE ACFT'S MUFFLER SYSTEM WAS DISINTEGRATING. IT WAS SUSPECTED THAT THE PIECES OF THE FLAME TUBE MAY HAVE BLOCKED THE MUFFLER OUTLET, BUT THE MALFUNCTION COULD NOT BE DUPLICATED. ## Aircraft - Registration: [N87020](https://openairdocs.org/deregistered/N87020-2017-10-06), registration cancelled 2017-10-06, S/N 52-74, built 1974 (OpenAirDocs) - Reported make and model: BELLANCA 8GCBC - Registry model: [Bellanca 8GCBC](https://openairdocs.org/model/bellanca-8gcbc) (registry code 1220803) (OpenAirDocs) - Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 52-74 - Airframe hours: 4020 - Engines: LYCOMING O-360-C2E 189 horsepower reciprocating - Damage: Substantial damage - Flight: Business, Part 91 - Registered owner: Hunter, Lee - Airworthiness certificate: Standard, Normal - Last inspection: Annual, September 12, 1986, 14 hours before - Departed: CNO, CHINO, CA - Flight plan: Company VFR - Airport: CNO, Chino, runway 26, 3,858 × 150 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 40; commercial; airplane ratings: single-engine sea, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: front; flight hours: 921 total, 433 in this make and model, 745 as pilot in command, 305 in the last 90 days, 86 in the last 30 days, 9 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 240° at 10 knots - Visibility: 10 statute miles - Lowest ceiling: none - Altimeter: 29.00 inHg - Observed at: ONT, 5 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 19860930046879A](https://openairdocs.org/incident/19860930046879A), Sep 30, 1986: Bbavia 8GCBC, Chino, CA, Substantial damage. The engine lost power after a banner tow. The aircraft ground looped on landing. Suspect muffler blockage. ## Other investigations on N87020 (3) 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 ERA11LA437](https://openairdocs.org/ntsb/ERA11LA437), Aug 2, 2011: Bellanca 8GCBC (N87020), Egg Harbor Township, NJ, substantial damage. Probable cause: The pilot’s failure to maintain adequate airspeed while maneuvering near the ground, which resulted in an aerodynamic stall. - [NTSB ERA11CA358](https://openairdocs.org/ntsb/ERA11CA358), Jun 20, 2011: Bellanca 8GCBC (N87020), Linwood, NJ, substantial damage. Probable cause: The pilot's improper brake application during the landing roll which resulted in a nose over. - [NTSB CHI92LA138](https://openairdocs.org/ntsb/CHI92LA138), Apr 29, 1992: Bellanca 8GCBC (N87020), Sioux Falls, SD, substantial damage. Probable cause: THE PILOT-IN-COMMAND'S FAILURE TO MAINTAIN DIRECTIONAL CONTROL. 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.