# NTSB CHI07CA311: Grumman American AA-5 Traveler, N9583L, Warrenton, MO, September 29, 2007 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Data collection · Final report - Date: September 29, 2007, 14:00 local (19:00 UTC) - Place: Warrenton, MO - Coordinates: 38.809722, -91.103332 - Nearby events: https://openairdocs.org/map.md?lat=38.8097&lon=-91.1033&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 3 minor, 1 uninjured - Status: Completed, report November 29, 2007 - Report: Approved by Office Director - Parties: STL FSDO - NTSB case key (mKey): 66931 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI07CA311 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/66931/pdf - Page: https://openairdocs.org/ntsb/CHI07CA311 ## Probable cause The low airspeed gust factor by the pilot, the altitude/clearance not maintained by the pilot, and the inadequate compensation for wind conditions by the pilot during the landing approach. Contributing factors were the trees and wind gusts. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - In flight collision with object, approach - vfr pattern - base leg/base to final - weather condition - gusts (contributing factor) - airspeed - low, pilot in command (cause) - altitude/clearance - not maintained, pilot in command (cause) - object - tree(s) (contributing factor) - compensation for wind conditions - inadequate, pilot in command (cause) - In flight collision with terrain/water, descent - uncontrolled - terrain condition - ground ## Analysis The aircraft was substantially damaged after it impacted trees and terrain while on approach for landing. The accident landing attempt was the pilot's sixth and last one for the day because of increasing wind variability. The pilot and three passengers reported minor injuries. The pilot was conducting rides for children of a local organization. The pilot reported that during the base to final turn, the airplane experienced a 100 foot per second descent rate from a wind gust. The pilot reportedly applied full power during recovery, but the airplane descended further when it encountered another wind gust. The pilot reported trying to put the airplane into a full stall so it would not impact the trees nose first. Examination of the airplane revealed impact damage to the right wing from the tree. The flaps were not fully extended. ## Factual narrative The aircraft was substantially damaged after it impacted trees and terrain while on approach for landing. The accident landing attempt was the pilot's sixth and last one for the day because of increasing wind variability. The pilot and three passengers reported minor injuries. The pilot was conducting rides for children of a local organization. The pilot reported that during the base to final turn, the airplane experienced a 100 foot per second descent rate from a wind gust. The pilot reportedly applied full power during recovery, but the airplane descended further when it encountered another wind gust. The pilot reported trying to put the airplane into a full stall so it would not impact the trees nose first. Examination of the airplane revealed impact damage to the right wing from the tree. The flaps were not fully extended. The pilot did not have his required pilot certificate and medical certificate with him during the operation of the airplane. There was no airworthiness certificate nor a aircraft registration certificate aboard the airplane which is contrary to Federal Aviation Regulations. ## Aircraft - Registration: [N9583L](https://openairdocs.org/deregistered/N9583L-2009-11-05), registration cancelled 2009-11-05, S/N AA5-0583, built 1974 (OpenAirDocs) - Reported make and model: Grumman American AA-5 Traveler - Registry model: [Grumman American Avn. AA-5](https://openairdocs.org/model/grumman-american-avn-aa-5) (registry code 3960104) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: AA5-0583 - Airframe hours: 1937 - Engines: Textron Lycoming O-320-E2G reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Pilot - Airworthiness certificate: Standard, Normal - Last inspection: Annual, July 1, 2007 - Departed: KBPK, Mountain Home, AR - Destination: MU02, Wwarrenton, MO - Airport: MU02, C.E.F. Airport, runway 13, 3,000 × 100 ft, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 57; injuries: minor; private; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; last flight review March 1, 2006; seat: left; flight hours: 338 total, 265 in this make and model, 302 as pilot in command, 14 in the last 90 days, 8 in the last 30 days, 7 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: variable at 10 knots, gusting 16 - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 82 °F, dew point 43 °F - Altimeter: 30.19 inHg - Observed at: SUS, 25 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 20070929825229A](https://openairdocs.org/incident/20070929825229A), Sep 29, 2007: Amrgen AA5, Truesdale, MO, Substantial damage. (-23) Mishap pilot was conducting flights for children of local organization. Upon approaching to land, he stated that he experienced a strong gust of wind… 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.