# NTSB MIA08LA079: Cessna 402B, N300SH, Fort Lauderdale, FL, March 15, 2008 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: March 15, 2008, 14:31 local (18:31 UTC) - Place: Fort Lauderdale, FL - Coordinates: 26.196666, -80.169998 - Nearby events: https://openairdocs.org/map.md?lat=26.1967&lon=-80.1700&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330) - Highest injury: No injuries - Injuries: 4 uninjured - Status: Completed, report September 26, 2008 - Report: Approved by Office Director - Parties: FAA/FSDO - NTSB case key (mKey): 67671 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA08LA079 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/67671/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=67671 - Page: https://openairdocs.org/ntsb/MIA08LA079 ## Probable cause The improper adjustment of the right main landing gear down lock by maintenance personnel resulting in the gear collapse during the landing roll.. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Runway/land/takeoff/taxi surface](https://openairdocs.org/ntsb-findings/03023000): Environmental issues › Physical environment · Not specified; cases with it: [Cessna 402B, 1 case](https://openairdocs.org/ntsb-findings/03023000/cases.md?model=207590P), [All aircraft, 253 cases](https://openairdocs.org/ntsb-findings/03023000/cases.md) - [Maintenance](https://openairdocs.org/ntsb-findings/02062000): Personnel issues › Task performance · Maintenance personnel (probable cause); cases with it: [Cessna 402B, 1 case](https://openairdocs.org/ntsb-findings/02062000/cases.md?model=207590P), [All aircraft, 143 cases](https://openairdocs.org/ntsb-findings/02062000/cases.md) - [Landing gear system](https://openairdocs.org/ntsb-findings/01023200): Aircraft › Aircraft systems · Failure; cases with it: [Cessna 402B, 1 case](https://openairdocs.org/ntsb-findings/01023200/cases.md?model=207590P), [All aircraft, 113 cases](https://openairdocs.org/ntsb-findings/01023200/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-landing roll: Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330) (defining event); cases with it: [Cessna 402B, 2 cases](https://openairdocs.org/ntsb-events/330/sequence.md?model=207590P), [All aircraft, 994 cases](https://openairdocs.org/ntsb-events/330/sequence.md) - [Landing-landing roll: Landing gear collapse](https://openairdocs.org/ntsb-events/094); cases with it: [Cessna 402B, 4 cases](https://openairdocs.org/ntsb-events/094/sequence.md?model=207590P), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md) - [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Cessna 402B, 3 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=207590P), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) ## Analysis The pilot reported that during approach, he observed only two down and locked indications for the nose and left main landing gear. The pilot's attempts to get the right main landing gear down and locked indication were unsuccessful, and a visual inspection of the landing gear by an air traffic controller revealed that the landing gear appeared to be down and locked. During the landing, the right main landing gear collapsed. Examination of the airplane revealed that the right main landing gear down lock micro switch was loose and not fully closed. Review of the operator's records and interviews of the operator's maintenance personnel revealed that several days prior to the accident, they made an improper adjustment to the right "side brace lock link," which was beyond the manufacturer's specifications, and prevented the right main gear to lock in the down position. In addition, after the adjustment, the maintenance personnel did not perform functional checks as required by the manufacturer's instructions. ## Factual narrative On March 15, 2008, at 1431 eastern daylight time, a Cessna 402B, N300SH, experienced a landing gear collapse during landing roll at the Fort Lauderdale Executive Airport (KFXE), Fort Lauderdale, Florida. The commercial pilot and three passengers were not injured. The airplane was substantially damaged. Visual meteorological conditions prevailed and an instrument flight rules flight plan was filed for the business flight. The airplane was registered to SHO Enterprise Incorporated and operated by Bimini Island Air under the provisions of Title 14 Code of Federal Regulations Part 135. The non-scheduled passenger flight originated from Freeport, Grand Bahamas at 1400. The pilot stated that upon arrival at FXE, he was cleared to land on runway 26. He said that after he put the landing gear handle in the down position, he observed only two down and locked indications for the nose and left main landing gear. He recycled the landing gear handle, but still got only observed a green light for the nose and left main landing gear. He then used the hand crank to extend the landing gear, but again observed only two down and locked green lights for the nose and left main landing gear. At that point, the pilot advised the air traffic controller that he had a "gear unsafe" warning light. Shortly thereafter, he conducted a fly-by, and the controller advised him that the landing gear looked down and locked. During the landing, the right main landing gear collapsed. Examination of the airplane by a Federal Aviation Administration (FAA) inspector revealed that the right main landing gear down lock micro switch was loose and not fully closed. The FAA inspector also reviewed the operator's maintenance records and interviewed the operator's maintenance personnel. The review and interviews revealed that several days prior to the accident, an adjustment was made to the right "side brace lock link" by the operator's maintenance personnel. The adjustment was accomplished by lengthening the adjustment screw one-half turn. The adjustment that was made to the right side brace lock link was beyond the manufacturer's recommendations, which prevented the side brace lock link from moving to the over center down and lock position. Functional checks, as required by the manufacturer's maintenance instructions, were not accomplished after this adjustment. ## Aircraft - Registration: [N300SH](https://openairdocs.org/deregistered/N300SH-2017-06-19), registration cancelled 2017-06-19, S/N 402B0858, built 1974 (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 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 0858 - Airframe hours: 10454.3 - Engines: Continental TSIO-520-E08 300 horsepower reciprocating; Continental TSIO-520-E19 300 horsepower reciprocating - Damage: Substantial damage - Flight: Part 135 - Operator: Bimini Island Air Inc - Registered owner: SHO Enterprises Incorporated - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, March 1, 2008, 4.6 hours before - Departed: MYGF, FREEPORT - Destination: KFXE, FORT LAUDERDALE, FL - Flight plan: IFR - Airport: FXE, Fort Lauderdale Executive, runway 26, 6,001 × 100 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 44; injuries: none; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, with waivers/limitations; last flight review December 1, 2007; seat: left; flight hours: 2,685 total, 803 in this make and model, 2,593 as pilot in command ## Weather - Conditions: Visual (VMC), Day - Wind: 240° at 14 knots, gusting 18 - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 90 °F, dew point 63 °F - Altimeter: 29.90 inHg - Observed at: KFXE ## 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 20080315836549A](https://openairdocs.org/incident/20080315836549A), Mar 15, 2008: Cessna 402B, Fort Lauderdal, FL, Substantial damage. (-23) Pilot was approaching fxe at approximately eight miles out and exteneded the landiing gear for landing. Only two gear lights illuminated. Pilot contacted… ## Docket (3 files) The files NTSB released with the investigation on September 3, 2008, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=67671. 6.9 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 667 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40296996&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF - Gear Rig Instructions (item 2, .PDF, 6.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40429482&FileExtension=.PDF&FileName=Gear%20Rig%20Instructions-Master.PDF - Record of Conversation - FAA N300SH (item 3, .PDF, 50 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40429483&FileExtension=.PDF&FileName=Record%20of%20Conversation%20-%20FAA%20N300SH-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.