SEA85FA056

NTSB accident investigation · Gulfstream AC-680F · Central Point, OR · February 9, 1985

Accident · FatalField investigationFinal report
Date
February 9, 1985, 12:48 local (20:48 UTC)
Place
Central Point, OR
Injuries
4 fatal
Damage
Destroyed
Phase of flight
Approach
Aircraft
N233WGulfstream AC-680F
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19850209004939A
Case key
40033

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine powerApproach - vfr pattern - base leg/base to final
Procedures/directives - not followedPilot in commandCause
Performance data - not understoodPilot in commandCause
Remedial action - not understoodPilot in commandCause
Improper use of equipment/aircraftPilot in commandCause
Anxiety/apprehensionPilot in commandFactor
Acft/equip,inadequate aircraft manualsManufacturerFactor
Fuel system - undeterminedFactor
Forced landingDescent - emergency
Emergency procedure - misjudgedPilot in commandCause
Loss of control - in flightApproach - vfr pattern - final approach
Airspeed(vmc) - not maintainedPilot in commandCause
Directional control - not maintainedPilot in commandCause
Throttle/power control - not correctedPilot in commandCause
Maneuver - uncontrolledPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - open field

Analysis

The plt reported a loss of power on both engs during descent to land. Aprx 3 mins prior, twr gave plt option of 'straight-in' to rwy 14 or reg pattern to rwy 32. The plt hesitated & said 'just a minute' & twr offered wind info as '210 at 13.' Plt replied, 'kay.' Aprx 1 min later plt said '33W will make a left base for 14.' Twr cleared him & declared visual contact. Plt acknowledged '3WHISKEY.' One min & 54 secs later, plt declared pwr loss & emerg. Twr rogered. Seven secs later, plt said 'gonna hit it' followed 2 secs later with an unitelligible comment. Witnesses saw the acft gliding wings lvl toward rwy when a loud 'rev' was heard, the acft pitched up & rolled left to an inverted position before ground contact & explosion. Post accident investigation did not disclose any eng or fuel system malfunction. This acft had experienced a pwr loss after descending from 15500 to 12000 ft MSL on 2/2/85 with the same plt as reported by the co-plt on that flt. After aprx 1 1/2 minutes pwr was restored.

Aircraft

Registration
N233W
Reported as
Gulfstream AC-680F
Category
Airplane
Serial number
680F1284129
Airframe hours
3,535
Engine
Lycoming IGSO-540-B1A, 380 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Part 135
Registered owner
Mercy Flights, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · December 20, 1984 · 167 hours before
Departed
4S1 · Gold Beach, OR
Destination
MFR · Medford, OR
Flight plan
IFR
Airport
MFR · Medford-Jackson County, runway 14, 6,700 × 150 ft, asphalt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
65
Certificates
Flight instructor, Commercial
Airplane ratings
Multi-engine land, Multi-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Toxicology
Performed
Flight hours
9,867 total · 25 in this make and model · 9,867 as pilot in command · 42 in the last 90 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 11 knots
Visibility
30 statute miles
Lowest ceiling
5,500 ft overcast
Temperature
45 °F, dew point 30 °F
Altimeter
30.00 inHg
Observed at
MFR, 1 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.