NTSB Identification: LAX89FA140.
The docket is stored on NTSB microfiche number 41586.
Accident occurred Friday, March 31, 1989 in NEWPORT BEACH, CA
Probable Cause Approval Date: 05/15/1992
Aircraft: PIPER PA-60-601P, registration: CGWPS
Injuries: 5 Fatal.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

SVRL MECHANIC WITNESSES AT THE ARPT SAID THE RGT ENG BACKFIRED & TRAILED BLACK SMOKE DURING THE TAKEOFF GROUND ROLL. RPRTDLY, THE TAKEOFF ROLL WAS ABOUT 80% LONGER THAN NORMAL. WITNESSES SAID THE ACFT STAGGERED OFF THE GROUND, WAS SLOW & NEVER GOT ABOVE 100 FEET AGL. THE PLT RPRTD TO THE TOWER THAT THE FLT HAD TO COME BACK TO THE RWY. SHORTLY THEREAFTER, WITNESSES SAW THE ACFT ENTER A STEEP LEFT TURN, APPARENTLY STALL, THEN CRASH INTO SOME TENNIS COURTS. AN INVESTIGATION REVEALED EVIDENCE THAT THE RGT ENG HAD LOST POWER. A MODIFICATION KIT FOR THE FUEL INJECTOR REFERENCE AIR LINES WAS INCORRECTLY INSTALLED & ALLOWED AN UNFILTERED AIR SOURCE. SPECTRAL ANALYSIS OF RESIDUE (FROM THE RGT ENG TURBO CHARGER COMPRESSOR) REVEALED THAT IT HAD THE SAME COMPOSITION AS THE ALTERNATE AIR DOOR SEAL. TRACES OF THE MATERIAL WERE FOUND IN THE FUEL INJECTOR REFERENCE AIR LINE.

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

FAILURE OF THE PILOT TO ATTAIN ADEQUATE AIRSPEED BEFORE MANEUVERING (TURNING) BACK TOWARD THE AIRPORT, WHICH RESULTED IN A LOSS OF AIRCRAFT CONTROL. A FACTOR RELATED TO THE ACCIDENT WAS: IMPROPER MAINTENANCE/INSTALLATION OF A FUEL INJECTOR REFERENCE AIR LINE, WHICH ALLOWED CONTAMINATION OF THE INJECTORS AND LOSS OF POWER IN THE RIGHT ENGINE.

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