NTSB Identification: CHI88LA166.
The docket is stored on NTSB microfiche number 37643.
Accident occurred Wednesday, July 13, 1988 in ELYRIA, OH
Probable Cause Approval Date: 11/07/1989
Aircraft: Gulfstream Aerospace G-21-G, registration: N77AQ
Injuries: 3 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

DURING THE LANDING ROLL, THE AIRCRAFT ENTERED AN UNCOMMANDED, GRADUAL SWERVE TO THE RIGHT, DEPARTING THE RIGHT SIDE OF THE RUNWAY AND COLLAPSING THE LEFT MAIN LANDING GEAR. THE PILOT WAS UNABLE TO MAINTAIN DIRECTIONAL CONTROL OF THE AIRCRAFT. POST-ACCIDENT EXAMINATION OF THE BRAKE ASSEMBLIES REVEALED THAT THEY WERE EXCESSIVELY WORN AND THE LININGS WERE NOT APPROVED BY THE MANUFACTURER AS INSTALLED; THE BRAKE LININGS HAD BEEN INTERMIXED UPON INSTALLATION AND THE MANUFACTURER STATED THAT THIS WAS 'NOT PERMISSIBLE'. THE MOST RECENT ANNUAL INSPECTION OCCURRED IN OCTOBER, 1987, AND THE AIRCRAFT HAD FLOWN 4 HOURS SINCE THAT TIME.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

LANDING GEAR,NORMAL BRAKE SYSTEM..INCORRECT

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

MAINTENANCE,INSTALLATION..IMPROPER..OTHER MAINTENANCE PERSONNEL

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

LANDING GEAR,NORMAL BRAKE SYSTEM..WORN

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

MAINTENANCE,ANNUAL INSPECTION..INADEQUATE..OTHER MAINTENANCE PERSONNEL



Contributing Factors

LANDING GEAR,MAIN GEAR..OVERLOAD

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