Aircraft Accident/Incident Report

Blanchard, Idaho 83804
Sunday, August 27, 1989 22:04 PDT

NTSB Narrative Summary Released at Completion of Accident

THE EMERG MED SVC (EMS/MEDEVAC) HELICOPTER WAS EN ROUTE WITH A PLT, 2 MED PSNL & A PATIENT. THE PATIENT (A FUGITIVE WITH A GUNSHOT WOUND) WAS HANDCUFFED TO THE STRETCHER. DRG FLT, THE PLT RPRTD A PROBLEM WITH THE PATIENT & REQUESTED POLICE ASSISTANCE DRG ARRIVAL AT THE HOSPITAL. THE PLT THEN TRANSMITTED AN EXPLETIVE & RADAR CONTACT WAS LOST WITH THE ACFT. WRECKAGE WAS FOUND OVER A 1 MI AREA WITH EVIDENCE OF AN IN-FLT BREAKUP & MAIN ROTOR CONTACT WITH THE COCKPIT & TAIL CONE. INV SHOWED EVIDENCE OF SWASHPLATE BRG SEIZURE. THE PITCH CHG LINK RODS & ROTATIONAL SCISSORS WERE BRKN IN THEDRCTN OF MAIN ROTOR ROTATION & CTC MARKS WERE FND ON THE FWD EARS OF THE ROTATING SWASHPLATE LUGS. DISASSEMBLY REVEALED FAILURE OF THE INNER & OUTER RACE LOCKS & SPALLING OF THE BRG RACES. LACK OF GREASE WAS NOTED IN THE BRG & THE BALL BRGSWERE DISCOLORED BLUE. WEAR MARKS ON THE BALL BRGS INDCD SCUFFING; 1 BALL BRG WAS FLUTED. THE BRG ASSEMBLY HAD ACCRUED 1.23 HRS OF OPN SINCE THE LAST 100 HR INSPN. LUBE REQUIRED EACH 400 HRS, COMPANY POLICY WAS TO LUBE AT 100 HR INTERVALS.

NTSB Probable Cause Narrative

OVERHEATING AND SEIZURE OF THE SWASHPLATE BEARING, WHICH RESULTED IN AN INFLIGHT BREAKUP OF THE HELICOPTER AND SUBSEQUENT IMPACT WITH THE GROUND.

Event Information

Type of Event Accident
Event Date 8/27/1989
Event Day of the Week Sunday
Time of Event 2204
Event Time Zone Pacific Daylight Time
Event City BLANCHARD
Event State IDAHO
Event Country --
Zipcode of the event site 83804
Event Date Year 1989
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 0
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 2147 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 206
Weather Observation Facility ID SFF
Elevation of weather observation facility 1953
Distance of event from weather observation facility (units?) 27
Time Zone of the weather observation PDT
Lighting Conditions Night/Dark
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 7000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 20
Air Temperature at event time (in degrees celsius) 16
Dew Point at event time (in degress fahrenheit) 10
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Calm
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 2313
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal 4
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 4
Investigating Agency NTSB
NTSB Docket Number (internal use) 1422
NTSB Notification Source --
NTSB Notification Date Aug 28 1989 12:00AM
NTSB Notification Time 1840
Fiche Number and/or location -used to find docket information 39721
Date of most recent change to record Dec 13 2000 12:57PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N132SH
NTSB Number DEN89FA202
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name AEROSPATIALE
Aircraft Model AS-350D
Aircraft Series Identifier AS-350D
Aircraft Serial Number 1335
Certified Max Gross Weight 4300
Aircraft Category Helicopter
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 6
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Aug 25 1989 12:00AM
Airframe hours since last inspection 1
Airframe Hours 3486
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name EAGLE HELICOPTERS, INC.
Aircraft Owner Street Address --
Aircraft Owner City SPOKANE
Aircraft Owner State WA
Aircraft Owner Country --
Aircraft Owner Zipcode 99212
Operator is an individual? No
Operator Name --
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City --
Operator State --
Operator Country --
Operator Zip code --
Operator Code IOAA
Owner has at least one certificate --
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation External Load
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Non-scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) --
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code
Departure City EASTPORT
Departure State ID
Departure Country
Departure Time 2126
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code 09WA
Destination City SPOKANE
Destination State WA
Destination Country
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jul 30 2004 10:25AM
User who most recently changed record NTSB\HAMG
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight Yes
Medical Flight Medical Emergency