# NTSB MIA90LA029: Beech 58, N6659D, Fernandina Bch, FL, November 18, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: November 18, 1989, 11:45 local (16:45 UTC)
- Place: Fernandina Bch, FL
- Coordinates: 30.649068, -81.440986 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=30.6491&lon=-81.4410&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report July 29, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 32602
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA90LA029
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/32602/pdf
- Page: https://openairdocs.org/ntsb/MIA90LA029

## Probable cause

FAILURE OF THE PILOT TO PERFORM THE EMERGENCY GEAR EXTENSION PROCEDURE TO ASSURE THAT THE GEAR WAS DOWN AND LOCKED. FACTORS RELATED TO THE ACCIDENT WERE:  LOW OIL PRESSURE IN THE RIGHT ENG, FAILURE OF BOTH VOLTAGE REGULATORS, AND THE LOW LEVEL OF CHARGE IN THE BATTERY.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Airframe/component/system failure/malfunction, cruise - normal
  - lubricating system - pressure too low (contributing factor)
  - propeller feathering - performed, pilot in command
  - electrical system,voltage regulator - failure,total (contributing factor)
  - electrical system,battery - low level (contributing factor)
- Complete gear collapsed, landing
  - gear down and locked - not attained, pilot in command (cause)
  - emergency procedure - not performed, pilot in command (cause)

## Analysis

DURING FLT, THE PLT NOTED THAT OIL PRESSURE IN THE RGT ENG HAD DROPPED TO THE RED LINE, SO HE SHUT DOWN & FEATHERED THE ENG.  HE STATED THAT AFTER ENTERING TRAFFIC TO LND, HE 'LOWERED' THE GEAR, THEN NOTED THAT THE RADAR & RADIOS BECAME INOP (AS ELECTRICAL POWER WAS LOST).  THOUGH HE HEARD & FELT THE GEAR EXTEND, HE DID NOT SEE ILLUMINATION OF THE DOWNLOCK LIGHTS.  THE PLT MADE A 360 DEG TURN TO GET SPACING BEHIND ANOTHER ACFT, THEN CONTD THE APCH TO LAND.  DURING THE LANDING, THE GEAR COLLAPSED & THE ACFT WAS DAMAGED.  AN EXAM OF THE RGT ENG REVEALED THAT THE LOW OIL PRESSURE WAS DUE TO A PIECE OF CARBON UNDER THE OIL PRESSURE RELIEF VALVE SEAT.  BOTH ALTERNATORS TESTED SATISFACTORILY; HOWEVER, BOTH VOLTAGE REGULATORS HAD FAILED INTERNALLY & BOTH ALTERNATOR CIRCUIT BREAKERS WERE POPPED.

## Aircraft

- Registration: N6659D (not matched to a registry record)
- Reported make and model: BEECH 58
- Category: Airplane
- Serial number: TH 1005
- Airframe hours: 1337
- Engines: CONTINENTAL IO-520 285 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Crider, William A.
- Registered owner: W.A. Crider
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, September 14, 1989, 32 hours before
- Departed: 2J4, METTER, GA
- Flight plan: IFR
- Airport: 55J, Fernandina Beach Muni, runway 4, 5,350 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 50; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 1,617 total, 362 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 350° at 5 knots
- Visibility: 7 statute miles
- Lowest ceiling: 25,000 ft broken
- Temperature: 54 °F, dew point 30 °F
- Altimeter: 30.00 inHg
- Observed at: CRG, 17 nm away

## 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 19891118065549A](https://openairdocs.org/incident/19891118065549A), Nov 18, 1989: Beech 58, Fernandina Beac, FL, Substantial damage. Left engine lost oil pressure. Shut down. Gear collapsed landing.

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.

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