Aircraft Accident/Incident Report

Siler City, North Carolina 27344
Thursday, April 13, 1989 5:15 EDT

NTSB Narrative Summary Released at Completion of Accident

WHILE IN CRUISE FLT THE ENGINE QUIT WITH A LOUD CLUNK. A FORCED LANDING WAS ATTEMPTED ON A HIGHWAY. THE ACFT DID NOT MAKE THE ROAD AND IT HIT AN EMBANKMENT. EXAM OF THE ENGINE REVEALED A BROKEN CRANKSHAFT AT THE FILLET BETWEEN THE NUMBER 4 CRANKPIN & THROW. THE NUMBER 4 CONNECTING ROD SHOWED EVIDENCE OF OVERHEATING. CRANKSHAFT END PLAY WAS FOUND TO BE ONE HALF INCH AT THE ACCESSORY END. ENGINE HAD RECEIVED MAJOR OVERHAUL 81 HOURS PRIOR TO THE FAILURE OF THE CRANKSHAFT.

NTSB Probable Cause Narrative

IMPROPER ENGINE OVERHAUL PROCEDURES WHICH RESULTED IN THE CATASTROPHIC FAILURE OF THE ENGINE CRANKSHAFT. CONTRIBUTING TO THE ACCIDENT WAS THE LACK OF A SUITABLE FORCED LANDING AREA.

Event Information

Type of Event Accident
Event Date 4/13/1989
Event Day of the Week Thursday
Time of Event 515
Event Time Zone Eastern Daylight Time
Event City SILER CITY
Event State NORTH CAROLINA
Event Country --
Zipcode of the event site 27344
Event Date Year 1989
Event Date Month 4
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 --
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 452 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 320
Weather Observation Facility ID GSO
Elevation of weather observation facility 926
Distance of event from weather observation facility (units?) 30
Time Zone of the weather observation EDT
Lighting Conditions Dawn
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 15
Air Temperature at event time (in degrees celsius) 3
Dew Point at event time (in degress fahrenheit) -3
Wind Direction (degrees magnetic) 230
Variable Wind Indicator Unknown
Wind Speed (knots) 4
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 0
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 753
NTSB Notification Source --
NTSB Notification Date Apr 13 1989 12:00AM
NTSB Notification Time 742
Fiche Number and/or location -used to find docket information 40257
Date of most recent change to record Dec 13 2000 12:35PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N28990
NTSB Number ATL89LA126
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name GRUMMAN
Aircraft Model AA-5B
Aircraft Series Identifier AA-5B
Aircraft Serial Number AA5B-0925
Certified Max Gross Weight 2400
Aircraft Category Airplane
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 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Apr 12 1989 12:00AM
Airframe hours since last inspection 4
Airframe Hours 2481
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name WRA, INC
Aircraft Owner Street Address ROUTE 1, BOX 483C
Aircraft Owner City MORRISVILLE
Aircraft Owner State NC
Aircraft Owner Country
Aircraft Owner Zipcode 27560
Operator is an individual? --
Operator Name WRA, INC
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address ROUTE 1 BOX 483
Operator City MORRISVILLE
Operator State NC
Operator Country
Operator Zip code 27560
Operator Code FOWA
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
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 Cargo
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code CLT
Departure City CHARLOTTE
Departure State NC
Departure Country
Departure Time 440
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code RDU
Destination City RALEIGH
Destination State NC
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --