# NTSB ATL99LA101: Cessna A188B, N53198, Glen Allan, MS, June 19, 1999 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: June 19, 1999, 14:00 local (19:00 UTC) - Place: Glen Allan, MS - Coordinates: 34.849689, -88.380287 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=34.8497&lon=-88.3803&mi=10 - Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report August 3, 2000 - Report: Approved by Office Director - NTSB case key (mKey): 46571 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL99LA101 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/46571/pdf - Page: https://openairdocs.org/ntsb/ATL99LA101 ## Probable cause The improper installation of a nut and bolt assembly by a maintenance personnel that resulted in the in-flight loss of control of the left ailiron. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - in flight, maneuvering - aerial application - flight control,aileron - not secured (cause) - miscellaneous,bolt/nut/fastener/clamp/spring - improper (cause) - maintenance,installation - inadequate, other maintenance personnel (cause) - Forced landing, descent - emergency - In flight collision with terrain/water, descent - emergency - terrain condition - rough/uneven ## Analysis The pilot reported that, while surveying a field for future work, the airplane became uncontrollable. He selected an emergency landing area, and made a forced landing in a field. The airplane sustained structural damage during the forced landing when the left wing collided with the ground, and the airplane cartwheeled. During the examination of the airplane, the pilot reported that the left aileron control bolt had separated from the control surface. When the left aileron was removed from the airframe, the missing bolt was recovered from the inter-structure of the wing area. The bolt was reinstalled through the aileron assembly, and appeared to provide enough thread material to secure the aileron assembly. The examination of the bolt assembly also disclosed that the bolt that connected the forward end of the control rod to the bell crank was too short and did not protrude through the nylon lock on the nut. The rod-end bearing was also seized and would not move. ## Factual narrative On June 19, 1999, at 1400 central daylight time, a Cessna A188B, N53198, collided with the ground during a forced landing near Glen Allan, Mississippi, following an in-flight malfunction of the aileron control system. The business flight was operated by the pilot under the provisions of Title 14 CFR Part 91 with no flight plan filed. Visual meteorological conditions prevailed at the time of the accident. The airplane sustained substantial damage and the commercial pilot was not injured. The flight initially departed Glen Allan, Mississippi, at 1355. The pilot reported that, while surveying a field for future work, the airplane became uncontrollable when the ailerons malfunctioned. The pilot selected an emergency landing area, and made a forced landing in a field. The airplane sustained structural damage during the forced landing when the left wing collided with the ground, and the airplane cartwheeled. During the examination of the airplane, the pilot reported that the left aileron control bolt had separated from the control surface. When the left aileron was removed from the airframe the missing bolt was recovered from the inter-structure of the wing area. The bolt was reinstalled through the aileron assembly, and appeared to provide enough thread material to secure the aileron assembly. The examination of the bolt assembly also disclosed that the bolt that connects the forward end of the control rod to the bell crank was too short and did not protrude through the nylon lock on the nut. The rod-end bearing was also seized and would not move. ## Aircraft - Registration: [N53198](https://openairdocs.org/deregistered/N53198-2008-02-07), registration cancelled 2008-02-07, S/N 18801677T, built 1974 (OpenAirDocs) - Reported make and model: Cessna A188B - Registry model: [Cessna A188B](https://openairdocs.org/model/cessna-a188b) (registry code 2073005) (OpenAirDocs) - Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 18801677T - Airframe hours: 4342 - Engines: Continental IO-520-D 285 horsepower reciprocating - Damage: Substantial damage - Flight: Aerial application, Part 91 - Operator: Michael Lewis - Registered owner: Robert Flying Service - Airworthiness certificate: Special, Restricted (Special) - Last inspection: Annual, March 25, 1999, 49 hours before - Departed: MS ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 39; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 3,000 total, 2,000 in this make and model, 200 in the last 90 days ## Weather - Conditions: Visual (VMC), Day - Wind: 130° at 5 knots - Visibility: 7 statute miles - Lowest ceiling: 6,500 ft broken - Temperature: 86 °F, dew point 70 °F - Altimeter: 30.00 inHg - Observed at: GLH ## 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 19990619007329A](https://openairdocs.org/incident/19990619007329A), Jun 19, 1999: Cessna A188B, Glen Allan, MS, Substantial damage. On takeoff, lost aileron control, banked left, throttled back, crashed next to grass strip, bolt came out of left aileron. (From .19) on June 19, 1999, at 1400… 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.