# NTSB CHI02LA210: Cessna 402B, N22PB, St. Louis, MO, July 24, 2002 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: July 23, 2002, 21:15 local (Jul 24, 2002, 02:15 UTC) - Place: St. Louis, MO - Coordinates: 38.740985, -90.350555 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=38.7410&lon=-90.3506&mi=10 - Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report April 18, 2003 - Report: Approved by Office Director - Parties: FAA - NTSB case key (mKey): 55346 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI02LA210 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/55346/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=55346 - Page: https://openairdocs.org/ntsb/CHI02LA210 ## Probable cause The landing gear collapsed for undetermined reasons. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Main gear collapsed, taxi - from landing - reason for occurrence undetermined (cause) ## Analysis The airplane's left main landing gear collapsed while taxiing after landing. The pilot reported he had 3 green lights and that the landing was normal. He taxied for about 2,000 feet and started a right turn onto a taxiway when the landing gear collapsed. An inspection of the accident site revealed that the distance between where the propeller had struck the runway and where the aircraft came to rest was approximately 120 ft. An examination of the landing gear revealed that the only visible damage to the left main landing gear system was a sheared AN25-38A bolt which attached the rod end of the bellcrank to the lower side brace, and the NAS464P4-26 bolt which attaches the upper portion of the bellcrank to the upper portion of the upper barrel. The aircraft inspection revealed the right main landing gear operated, but the left landing gear could not be operationally checked. ## Factual narrative On July 23, 2002, at 2115 central daylight time, a Cessna 402B, N22PB, piloted by an air transport pilot, sustained substantial damage when the left main landing gear collapsed while taxiing after landing at the Lambert - St. Louis International Airport (STL), St. Louis, Missouri. Visual meteorological conditions prevailed at the time of the accident. The flight was operating on an IFR flight plan under the provisions of 14 CFR Part 135. The pilot reported no injuries. The flight originated from the Columbia Regional Airport (COU), Columbia, Missouri at 2035. The pilot reported, "After landing, I taxied down 30R when St. Louis Tower instructed me to exit on taxiway November to the cargo ramp on tower frequency...At a speed of a brisk walk, I arrived at taxiway November. I started my [right] turn onto November when the left main landing gear gave way. I then notified tower immediately. I commenced emergency shutdown and egressed from the airplane." An inspector from the Federal Aviation Administration (FAA) viewed the site where the accident occurred. He reported, "I took photographs of the runway where the propeller had struck the runway and where the aircraft came to rest. This distance was approximately 120 ft." The FAA inspector reported the pilot stated that "he had 3 green lights and the gear was down and locked," and that the landing and taxiing normal until the landing gear collapsed. The FAA inspector examined the landing gear. He reported that the only visible damage to the left main landing gear system "appeared to be a sheared AN25-38A bolt which attached the rod end of the bellcrank to the Lower Side Brace, and the NAS464P4-26 bolt which attaches the upper portion of the bellcrank to the upper portion of the upper barrel. This bellcank is what keeps the side braces locked and over center." He reported that the right hand main landing gear was operated and it "appeared to be within rigging limits for downlock spring tension and freefall checks." He reported, "The Landing Gear indicating lights where checked, which appeared to function normal." The left landing gear was not operationally checked. ## Aircraft - Registration: [N22PB](https://openairdocs.org/deregistered/N22PB-2014-09-16), registration cancelled 2014-09-16, S/N 402B0243, built 1972 (OpenAirDocs) - Reported make and model: Cessna 402B - Registry model: [Cessna 402B](https://openairdocs.org/model/cessna-402b) (registry code 207590P) (OpenAirDocs) - Registry engine: [Continental TSIO-520-E](https://openairdocs.org/engine/continental-tsio-520-e) (registry code 17255, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 402B0243 - Airframe hours: 9600 - Engines: Continental TSIO 520 E8 300 horsepower reciprocating - Damage: Substantial damage - Flight: Part 135 - Registered owner: Corporate Aircraft Resources Inc - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, July 1, 2002, 31 hours before - Departed: COU, Columbia, MO - Destination: STL, St. Louis, MO - Flight plan: Unknown - Airport: STL, Lambert-St Louis Intl, runway 30R, 9,003 × 150 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 36; injuries: none; flight instructor, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane, helicopter; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 2,668 total, 677 in this make and model, 2,207 as pilot in command, 113 in the last 90 days, 70 in the last 30 days, 4 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 190° at 4 knots - Visibility: 10 statute miles - Lowest ceiling: 6,000 ft broken - Temperature: 79 °F, dew point 72 °F - Altimeter: 30.02 inHg - Observed at: STL ## 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 20020723027529A](https://openairdocs.org/incident/20020723027529A), Jul 23, 2002: Cessna 402B, St Louis, MO, Substantial damage. (-23) On July 23, 2002 at approximately 21:17 hrs Mr. Jason andrew anderson landed at st. Louis international airport (stl) on runway 30R. After touch down Mr.… ## Docket (1 files) The files NTSB released with the investigation on February 13, 2003, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=55346. 323 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 323 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40463892&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF 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.