# NTSB CHI06LA012: Bellanca 7GCBC, N2698Z, Williams, MN, October 15, 2005 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Limited investigation · Final report - Date: October 15, 2005, 15:45 local (20:45 UTC) - Place: Williams, MN - Coordinates: 48.72861, -94.61222 - Nearby events: https://openairdocs.org/map.md?lat=48.7286&lon=-94.6122&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: Serious injuries - Injuries: 2 serious - Status: Completed, report May 30, 2006 - Report: Approved by Office Director - Parties: Minneapolis, MN FSDO - NTSB case key (mKey): 62674 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI06LA012 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/62674/pdf - Page: https://openairdocs.org/ntsb/CHI06LA012 ## Probable cause The pilot's failure to maintain airspeed which resulted in the airplane stalling. Factors associated with the accident were the low level at which the airplane was maneuvering and the pilot's failure to perform weight and balance calculations prior to the accident. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - in flight, approach - aircraft weight and balance - not performed, pilot in command (contributing factor) - altitude - low, pilot in command (contributing factor) - airspeed - inadequate, pilot in command (cause) - stall - inadvertent, pilot in command - In flight collision with terrain/water, descent - uncontrolled - terrain condition - water ## Analysis The airplane contacted the water following a loss of control in flight. The pilot reported he was flying over a friend's cabin when the accident occurred. He reported he flew over the cabin and entered a "standard rate" right turn. He reported they circled 180 degrees and when he tried to level the wings he noticed there was no control pressure on the stick. The pilot reported the right wing dropped and he had limited control of the airplane so he reduced the engine power and added flaps prior to the airplane contacting the water. One witness reported seeing the airplane in a turn prior to it rolling to the right and onto its back. This witness stated the airplane "dove straight in from approx 150 feet." A second witness reported seeing the airplane in a turn with 45 to 60 degrees of bank when it rolled over and descended in a vertical attitude. This witness reported the engine was running and he heard a "pop" sound just prior to the airplane contacting the water. The pilot stated during an interview that the flight controls and engine were operating normally during the flight. He also reported that he did not perform any weight and balance calculations prior to the flight. Weight and balance information indicates the airplane was at least 242 pounds over the maximum gross weight. ## Factual narrative On October 15, 2005, at 1545 central daylight time, a Bellanca 7GCBC, N2698Z, collided with the water of Lake of the Woods near Williams, Minnesota, following a loss of control. The pilot and passenger were seriously injured. The airplane was substantially damaged. The 14 Code of Federal Regulations Part 91 personal flight was operating in visual meteorological conditions without a flight plan. The flight originated from the Roseau Municipal Airport (ROX), Billberg, Minnesota, at 1400. The pilot reported that after taking off they flew over the passenger's hunting property at altitudes ranging from 500 feet above ground level (agl) to 2,500 feet agl. He reported they continued on to a friend's private airstrip, but no one was there so they decided to fly over the friend's cabin. The pilot reported he flew over the cabin and entered a "standard rate" right turn. He reported they circled 180 degrees and when he tried to level the wings he noticed there was no control pressure on the stick. The pilot reported the right wing dropped and he had limited control of the airplane so he reduced the engine power and added flaps prior to the airplane contacting the water. One witness reported seeing the airplane in a turn prior to it rolling to the right and onto its back. This witness stated the airplane "dove straight in from approx 150 feet." A second witness reported seeing the airplane in a turn with 45 to 60 degrees of bank when it rolled over and descended in a vertical attitude. This witness reported the engine was running and he heard a "pop" sound just prior to the airplane contacting the water. The pilot stated during an interview that the flight controls and engine were operating normally during the flight. He also reported that he did not perform any weight and balance calculations prior to the flight. The pilot stated he weighted 200 pounds, the passenger weighed approximately 280 pounds and that each fuel tank was approximately three-quarters full (27 gallons). The most current weight and balance information located indicated the gross weight of the airplane was 1,650.0 pounds and the empty weight was 1,250.5 pounds. The useful load was listed as being 399.5 pounds. Two pieces of wing spar were forwarded to the National Transportation Safety Board for examination. Both pieces were from the right wing. One piece was from the forward spar and the other was from the aft spar. The pieces were examined at both the American Champion Aircraft Company and the United States Department of Agriculture Forest Products Laboratory. Neither of these examinations revealed any pre-existing fractures of the spar pieces. ## Aircraft - Registration: [N2698Z](https://openairdocs.org/deregistered/N2698Z-2013-09-13), registration cancelled 2013-09-13, S/N 1016-78, built 1978 (OpenAirDocs) - Reported make and model: Bellanca 7GCBC - Registry model: [Bellanca 7GCBC](https://openairdocs.org/model/bellanca-7gcbc) (registry code 1220601) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 1016-78 - Airframe hours: 760 - Engines: Lycoming O-320-A2B 160 hp reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Matthew L. Knochenmus - Airworthiness certificate: Standard, Normal - Last inspection: Annual, December 1, 2004 - Departed: Roseau, MN - Destination: PVT, Williams, MN ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 38; injuries: serious; private; airplane ratings: single-engine land; medical: class 3, without waivers/limitations; last flight review April 1, 2005; seat: front; flight hours: 208 total, 113 in this make and model, 126 as pilot in command, 11 in the last 90 days, 2 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 350° at 7 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 54 °F, dew point 36 °F - Altimeter: 30.12 inHg - Observed at: BDE ## 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 20051015025239A](https://openairdocs.org/incident/20051015025239A), Oct 15, 2005: Bbavia 7GCBC, Williams, MN, Substantial damage. (-23) Departed roseau, MN (rox) at 1430 local time, while maneuvering at Williams, MN, approx. 30 miles north of baudette, MN, for a landing at a private… ## Other investigations on N2698Z (1) 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 ANC79DAG57](https://openairdocs.org/ntsb/ANC79DAG57), Jun 29, 1979: Bellanca 7GCBC (N2698Z), Anchorage, AK, 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.