# NTSB CHI08CA226: American AA-1A, N9483L, Grantsburg, WI, July 22, 2008 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Data collection · Final report - Date: July 21, 2008, 19:30 local (Jul 22, 2008, 00:30 UTC) - Place: Grantsburg, WI - Coordinates: 45.683887, -92.687225 - Nearby events: https://openairdocs.org/map.md?lat=45.6839&lon=-92.6872&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Defining event: [Initial climb: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report September 29, 2008 - Report: Approved by Office Director - NTSB case key (mKey): 68700 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI08CA226 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/68700/pdf - Page: https://openairdocs.org/ntsb/CHI08CA226 ## Probable cause A loss of engine power for an undetermined reason. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Not determined](https://openairdocs.org/ntsb-findings/05000000): Not determined › Not determined · Unknown/Not determined (probable cause); cases with it: [American AA-1A, 1 case](https://openairdocs.org/ntsb-findings/05000000/cases.md?model=0630710), [All aircraft, 2,247 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Initial climb: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341) (defining event); cases with it: [American AA-1A, 3 cases](https://openairdocs.org/ntsb-events/341/sequence.md?model=0630710), [All aircraft, 3,820 cases](https://openairdocs.org/ntsb-events/341/sequence.md) - [Emergency descent: Off-field or emergency landing](https://openairdocs.org/ntsb-events/440); cases with it: [American AA-1A, 4 cases](https://openairdocs.org/ntsb-events/440/sequence.md?model=0630710), [All aircraft, 3,365 cases](https://openairdocs.org/ntsb-events/440/sequence.md) - [Landing: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [American AA-1A, 11 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=0630710), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot stated that he was departing from his private airstrip when the airplane experienced a loss of engine power about 100 feet above ground level. The pilot lowered the nose of the airplane when the stall warning annunciated and the airplane began to spin. The pilot recovered the airplane about 50 feet above the ground and performed a forced landing at the end of a field, which resulted in substantial damage to the left wing and vertical stabilizer. The pilot received minor injuries. ## Factual narrative The pilot stated that he was departing from his private airstrip when the airplane experienced a loss of engine power about 100 feet above ground level. The pilot lowered the nose of the airplane when the stall warning annunciated and the airplane began to spin. The pilot recovered the airplane about 50 feet above the ground and performed a forced landing at the end of a field, which resulted in substantial damage to the left wing and vertical stabilizer. The pilot received minor injuries. ## Aircraft - Registration: [N9483L](https://openairdocs.org/deregistered/N9483L-2013-09-11), registration cancelled 2013-09-11, S/N AA1A-0283, built 1971 (OpenAirDocs) - Reported make and model: American Aviation AA-1A - Registry model: [American AA-1A](https://openairdocs.org/model/american-aa-1a) (registry code 0630710) (OpenAirDocs) - Registry engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505, 4 cycle) (OpenAirDocs) - Category: Airplane - Serial number: 2811279 - Engines: Lycoming O-320-B1A reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Pilot - Airworthiness certificate: Standard, Utility; Standard, Normal - Departed: WS77, Grantsburg, WI - Destination: WS77 ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 48; private; airplane ratings: single-engine land; medical: class 3; flight hours: 397 total, 300 in this make and model, 17 in the last 90 days, 17 in the last 30 days ## Weather - Conditions: Visual (VMC), Day ## 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 20080722843389A](https://openairdocs.org/incident/20080722843389A), Jul 22, 2008: Amrgen AA1A, Grantsburg, WI, Destroyed. (-23) On July 22,2008 at 1930 CDT pilot/owner [privacy data omitted] crashed aircraft N9483L. On takeoff heading east from pilot's private field located at… ## Other investigations on N9483L (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 CHI08CA076](https://openairdocs.org/ntsb/CHI08CA076), Feb 6, 2008: American AA-1A (N9483L), Grantsburg, WI, substantial damage. Probable cause: The seizure of the left brake due to a buildup of ice between the rotor and brake pad. Contributing to the accident was the snow and slush covered runway, and the snowbank. 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.