Billings Logan Internatio Airport
Aircraft Accident/Incident Report

Billings, Montana 59101
Thursday, July 1, 1999 14:45 MDT

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that upon touchdown the aircraft began to drift left, and right rudder was applied to correct with no effect. As the drift continued, the pilot applied right brake, increasing brake pressure until he 'was pushing against the seat.' The aircraft continued to veer left, tightening its turn radius until it had rotated more than 180 degrees counter-clockwise. During the rotation, the aircraft settled to the left in line with the runway lights and came to a stop. Post-crash examination by a certified mechanic revealed that the left main landing gear shock strut tube had separated at its attach point to the left main wheel assembly. This would have allowed the release of the left main landing gear, permitting it to pivot into a flat (collapsed) position.

NTSB Probable Cause Narrative

The separation of the left main landing gear shock strut for undetermined reasons.

Event Information

Type of Event Accident
Event Date 7/1/1999
Event Day of the Week Thursday
Time of Event 1445
Event Time Zone Mountain Daylight Time
Event City BILLINGS
Event State MONTANA
Event Country --
Zipcode of the event site 59101
Event Date Year 1999
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport BILLINGS LOGAN INTERNATIO
Event Location Nearest Airport ID BIL
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport --
Airport Elevation 3485
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1456 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID BIL
Elevation of weather observation facility 3649
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 6500
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) 10
Air Temperature at event time (in degrees celsius) 24
Dew Point at event time (in degress fahrenheit) 4
Wind Direction (degrees magnetic) 180
Variable Wind Indicator Unknown
Wind Speed (knots) 8
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
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 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 373
NTSB Notification Source --
NTSB Notification Date Jul 1 1999 12:00AM
NTSB Notification Time 1400
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 12 2000 11:45AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N3513A
NTSB Number SEA99LA103
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Piper
Aircraft Model PA-22
Aircraft Series Identifier PA-22
Aircraft Serial Number 22-1785
Certified Max Gross Weight 1950
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 Annual
Date of Last Inspection Aug 8 1998 12:00AM
Airframe hours since last inspection 99
Airframe Hours 2480
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name CHADWICK, THOMAS, K.
Aircraft Owner Street Address RR 3, BOX 314
Aircraft Owner City RICHFIELD SPRGS
Aircraft Owner State NY
Aircraft Owner Country
Aircraft Owner Zipcode 13439
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
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
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 HLN
Departure City HELENA
Departure State MT
Departure Country
Departure Time 1234
Departure Time Zone MDT
Destination Same as Local Flt crash at destination city
Destination Airport Code BIL
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 28R
Runway Length 10528
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --