# NTSB ATL83FA009: Beech 58, N958MC, Allendale, SC, October 8, 1982 - Type: NTSB accident investigation - Classification: Accident · No injuries · Field investigation · Final report - Date: October 8, 1982, 13:20 local (17:20 UTC) - Place: Allendale, SC - Coordinates: 33.000385, -81.299324 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=33.0004&lon=-81.2993&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report October 8, 1983 - Report: Approved by Office Director - NTSB case key (mKey): 69740 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL83FA009 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/69740/pdf - Page: https://openairdocs.org/ntsb/ATL83FA009 ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Airframe/component/system failure/malfunction, cruise - normal - electrical system,battery - inadequate (contributing factor) - electrical system,battery - deteriorated (contributing factor) - electrical system,alternator - inoperative (contributing factor) - electrical system - output low (contributing factor) - maintenance,inspection - inadequate, company maintenance personnel (contributing factor) - electrical system - failure,total (cause) - emergency procedure - not followed, pilot in command (cause) - electrical system - improper use of, pilot in command (cause) - Complete gear collapsed, landing - flare/touchdown - emergency procedure - not followed, pilot in command (cause) - gear down and locked - not attained, pilot in command (cause) - inadequate training(emergency procedure(s)), pilot in command (cause) - wheels up landing - performed, pilot in command ## Analysis ABOUT 30 MIN AFTER DEPARTURE, ELECTRICAL EQUIPMENT BEGAN TO FAIL. THE PLT TURNED OFF THE ALTERNATOR & RESET WITH NO CHANGE. HE THEN SWITCHED TO THE #1 REGULATOR WHICH DID NOT CORRECT THE PROBLEM. WHILE TURNING ON DOWNWIND THE GEAR HANDLE WAS PLACED DOWN & ALL ELECT POWER WAS LOST. THE PLT THEN CRANKED THE GEAR DOWN UNTIL RESISTANCE WAS MET, BUT DID NOT COUNT THE NUMBER OF REVOLUTIONS. THE ACFT TOUCHED DOWN WITH PARTIALLY EXTENDED LANDING GEAR. BOTH BATTERIES WERE FOUND DRY. THE LEFT ALTERNATOR HAD NO OUTPUT & RIGHT ALTERNATOR CURRENT LIMITER WAS BURNED OPEN. THE PLT INDICATED DURING A SUBSEQUENT INTERVIEW THAT HE DID NOT TURN OFF ANY ELECTRICAL EQUIPMENT. HE ALSO STATED THAT HE HAD NOT EXERCISED THE EMERG LANDING GEAR SYSTEM IN FLIGHT PRIOR TO THIS MISHAP. ## Aircraft - Registration: [N958MC](https://openairdocs.org/deregistered/N958MC-2010-05-07), registration cancelled 2010-05-07, S/N TH-552, built 1974 (OpenAirDocs) - Reported make and model: BEECH 58 - Registry model: [Beech 58](https://openairdocs.org/model/beech-58) (registry code 1152740) (OpenAirDocs) - Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: TH552 - Airframe hours: 243 - Engines: CONTINENTAL IO-520-C7 285 horsepower reciprocating - Damage: Substantial damage - Flight: Part 135 - Operator: Grand Strand Aviation, Inc. - Registered owner: Grand Strand Aviation, Inc. - Departed: C, NORTH MYRTLE BE, SC - Destination: C, DESTIN, FL - Airport: 88J, Allendale County, runway 17, 3,200 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 33; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; flight hours: 2,262 total, 175 in this make and model, 1,971 as pilot in command, 11 in the last 90 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 150° at 6 knots - Visibility: 7 statute miles - Lowest ceiling: 10,000 ft overcast - Temperature: 180 °F - Altimeter: 30.00 inHg ## 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 19821008052139A](https://openairdocs.org/incident/19821008052139A), Oct 8, 1982: Beech 58, Allendale, SC, Substantial damage. After electrical failure pilot failed to determine gear was down and locked. Gear collapsed at touchdown. ## Other investigations on N958MC (1) 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. - [NTSB ATL89IA026](https://openairdocs.org/ntsb/ATL89IA026), Nov 2, 1988: Beech 58 (N958MC), Georgetown, SC, incident, minor damage 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.