NTSB Identification: LAX86LA075.
The docket is stored on NTSB microfiche number 30153.
Accident occurred Thursday, December 26, 1985 in TUCSON, AZ
Aircraft: PIPER PA-34T-22OT, registration: XBDRL
Injuries: 6 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 A TRANS BORDER VFR X-COUNTRY FLT, THE PLT NOTICED 'OIL SPIRTING FROM THE LEFT ENGINE' WITH SMOKE, & HE SHUT IT DOWN. AN EMERGENCY WAS DECLARED BY THE TUCSON ATCT, WHO CLEARED THE ACFT TO LAND STRAIGHT IN ON RWY 29L. TOWER PERSONNEL OBSERVED THE ACFT PORPOISE ABOUT 7,000 FT DOWN THE RWY BEFORE GROUND LOOPING AND SLIDING OFF THE LEFT SIDE. THE ACFT & ENGINES HAD ABOUT 249 HOURS TOTAL TIME. EXAMINATION OF THE LEFT ENGINE REVEALED A 3/4 INCH CRACK IN THE LOWER FRONT WELD SEAM OF THE OIL COOLER. THE CRACK WAS ONLY VISABLE UNDER PRESSURE TESTING.

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

OIL COOLER CONTROL..CRACKED

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

AIRCRAFT HANDLING..NOT MAINTAINED..PILOT IN COMMAND

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

MAINTENANCE,INSTALLATION..IMPROPER..MANUFACTURER

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