# NTSB MIA98IA006: Beech 18 [C-45H], N486JB, Orlando, FL, October 9, 1997 - Type: NTSB incident investigation - Classification: Incident · No injuries · Incident investigation · Final report - Date: October 8, 1997, 21:32 local (Oct 9, 1997, 01:32 UTC) - Place: Orlando, FL - Coordinates: 28.420257, -81.299835 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=28.4203&lon=-81.2998&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report November 10, 1998 - Report: Approved by Office Director - NTSB case key (mKey): 38408 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA98IA006 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/38408/pdf - Page: https://openairdocs.org/ntsb/MIA98IA006 ## Probable cause the failure of the landing gear chain from the main landing gear torque shaft to the nose gear box coming off the sprocket, causing the landing gear to be out of sequence between the main gear and the nose gear. ## Analysis The pilot said that when he lowered the landing gear he noticed that the right main gear was not down and locked. He advised ATC of the situation and was given vectors to the west of the airport to investigate the problem. He made several attempts to correct the problem by recycling the gear handle. He then attempted gear emergency extension procedures, and observed that the gear was still indicating an intermediate position. He again advised ATC, and made a low pass by the control tower. Due to the darkness the tower could not confirm whether the gear was down or not. After several additional attempts to determine the problem without successes, he elected to make a gear up landing on the runway. Examination of the landing gear revealed that the chain from the main landing gear torque shaft to the nose gear box, had come of the sprocket at the nose gear box exposing several teeth. This caused the landing gear to be out of sequence between the main gear and the nose gear. This resulted in the nose gear retract nut bottoming out against the nose gear box, making it impossible to extend the landing gear fully, either by normal or emergency extension methods. ## Factual narrative On October 8, 1997, about 2132 eastern daylight time, a Beech 18 [C-45H], N486JB, operated by Caribe Air Cargo, as a Title 14 CFR Part 135, cargo flight, made a gear-up landing near Orlando, Florida. Visual meteorological conditions prevailed and an IFR flight plan was filed. The airplane received minor damage. The commercial pilot was not injured. The flight had departed Melbourne, Florida, at 2050. The pilot said that while on base leg for runway 18R, he lowered the landing gear and "noticed that the right main gear was not down and locked." He advised ATC of the situation and was given vectors to the west of the airport to investigate the problem. The pilot said he moved the gear handle to the "UP" position, then lowered the gear, and again it indicated that the "gear was not down and locked." He then attempted "gear emergency extension procedures...and observe[d] that the gear was still [indicating an] intermediate position." He again advised ATC, and made a low pass by the control tower, in an attempt to have the tower personnel confirm the position of the landing gear. Due to the darkness the tower personnel could not confirm the position of the gear. The pilot made additional attempts to determine the problem without successes. He then elected to make a gear up landing on the runway. The airplane touched down, slid on the runway and came to a stop. Examination of the landing gear revealed that the chain from the main landing gear torque shaft to the nose gear box had come off the sprocket at the nose gear box, exposing several teeth. This caused the landing gear to be out of sequence between the main gear and the nose gear. This resulted in the nose gear retract nut bottoming out against the nose gear box, making it impossible to extend the landing gear fully, either by normal or emergency extension methods. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Wheels up landing, landing - flare/touchdown - landing gear,normal retraction/extension assembly - not engaged (cause) ## Aircraft - Registration: [N486JB](https://openairdocs.org/deregistered/N486JB-2013-08-05), registration cancelled 2013-08-05, S/N AF-858 (OpenAirDocs) - Reported make and model: Beech 18 [C-45H] - Registry model: [Beech C-45H](https://openairdocs.org/model/beech-c-45h) (registry code 1151018) (OpenAirDocs) - Category: Airplane - Serial number: AF-858 - Airframe hours: 7517 - Engines: P&W R985-14B 450 horsepower reciprocating - Damage: Minor damage - Flight: Part 135 - Operator: Carib-Air Cargo Inc - Registered owner: Hartford Holding Co. - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, August 8, 1997, 34 hours before - Departed: MLB, MELBOURNE, FL - Flight plan: IFR - Airport: MCO, Orlando International, runway 18R, 12,004 × 200 ft, concrete ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 37; commercial, flight engineer, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 4,700 total, 160 in this make and model, 4,300 as pilot in command ## Weather - Conditions: Visual (VMC), Night/bright - Wind: 50° at 7 knots - Visibility: 10 statute miles - Lowest ceiling: 8,000 ft broken - Temperature: 75 °F, dew point 72 °F - Altimeter: 30.00 inHg - Observed at: MCO ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Incident 19971008030479I](https://openairdocs.org/incident/19971008030479I), Oct 8, 1997: Beech C45H, Orlando, FL, Minor damage. Right main gear collapsed upon landing runway 18R. (-23) this aircraft has the nose gear conversion by volpar. When the pilot selected gear down, the nose gear… From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; 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.