Oakland Pontiac Airport
Aircraft Accident/Incident Report

Pontiac, Michigan 48054
Friday, July 14, 1989 14:45 EDT

NTSB Narrative Summary Released at Completion of Accident

THE AIRCRAFT WAS ON LANDING ROLL-OUT WHEN THE RIGHT MAIN GEAR COLLAPSED. THE PILOT STATED HE HAD A GEAR DOWN AND LOCKED INDICATON IN THE COCKPIT. THIS WAS THE FIRST FLIGHT AFTER MAINTENANCE WAS PERFORMED ON THE LANDING GEAR ACTUATOR TO CORRECT AN UNSAFE 'DOWN' INDICATION. AN INVESTIGATION REVEALED THERE WAS A LOOSE JAMB NUT IN ACTUATOR ADJUSTMENT LINKAGE AND THAT THE INNER GEAR DOOR WAS NOT FULLY CLOSED. THE END FITTING ON THE LOWER SIDE LINK HAD FAILED WHERE THERE WAS EXCESSIVE SIDE PLAY.

NTSB Probable Cause Narrative

FAILURE OF THE RIGHT MAIN LANDING GEAR EXTENSION/RETRACTION COMPONENT RESULTING FROM UNACCEPTABLE LOADS INCURRED DUE TO IMPROPER ADJUSTMENT.

Event Information

Type of Event Accident
Event Date 7/14/1989
Event Day of the Week Friday
Time of Event 1445
Event Time Zone Eastern Daylight Time
Event City PONTIAC
Event State MICHIGAN
Event Country --
Zipcode of the event site 48054
Event Date Year 1989
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport OAKLAND PONTIAC
Event Location Nearest Airport ID PTK
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 980
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1445 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID PTK
Elevation of weather observation facility 980
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height 6000
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 7
Air Temperature at event time (in degrees celsius) 23
Dew Point at event time (in degress fahrenheit) 9
Wind Direction (degrees magnetic) 360
Variable Wind Indicator Unknown
Wind Speed (knots) 10
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
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) 1526
NTSB Notification Source --
NTSB Notification Date Jul 17 1989 12:00AM
NTSB Notification Time 1100
Fiche Number and/or location -used to find docket information 39870
Date of most recent change to record Dec 13 2000 12:51PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N2706T
NTSB Number CHI89LA136
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name CESSNA
Aircraft Model 335
Aircraft Series Identifier 335
Aircraft Serial Number 3350017
Certified Max Gross Weight 7912
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 8
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jan 9 1988 12:00AM
Airframe hours since last inspection 92
Airframe Hours 1066
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name ROBERT F BYRNE
Aircraft Owner Street Address 1115 IVY GLEN CIRCLE
Aircraft Owner City BLOOMFIELD HILL
Aircraft Owner State MI
Aircraft Owner Country
Aircraft Owner Zipcode 48012
Operator is an individual? --
Operator Name ROBERT BYRNE
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 1115 IVY GLEN
Operator City BLOOMFIELD HILL
Operator State MI
Operator Country
Operator Zip code 48013
Operator Code
Owner has at least one certificate None
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 --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code DET
Departure City DETROIT
Departure State MI
Departure Country
Departure Time 1430
Departure Time Zone EDT
Destination Same as Local Flt crash at destination city
Destination Airport Code
Destination City
Destination State
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 27L
Runway Length 6250
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --