NTSB Identification: LAX83FA295.
The docket is stored on NTSB microfiche number 23077.
Accident occurred Wednesday, June 22, 1983 in HUNTINGTON BCH, CA
Aircraft: CESSNA 172G, registration: N4655L
Injuries: 2 Serious.

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.

THE PLT-IN-COMMAND (PIC) & STUDENT PLT WERE ON AN AERIAL PHOTOGRAPHY FLT WHEN THE PIC NOTICED A LOSS OF ENG OIL PRESSURE. THEY SAW MEADOWLARK ARPT & BEGAN AN EMERGENCY APCH. THE PIC STATED THAT SHE RELINQUISHED HER PIC DUTIES TO THE STUDENT BECAUSE SHE BELIEVED HE HAD A HIGHER LEVEL OF FLYING EXPERIENCE. (THE STUDENT HAD TOLD HER THAT HE WAS A FORMER MILITARY PLT, BUT HAD NOT OBTAINED A CIVILIAN PLT CERTIFICATE.) WHILE ON FINAL APCH, THE ACFT WAS HIGH, SO THE STUDENT ELECTED TO MAKE A GO-AROUND AND A 360 DEG TURN. DURING THE TURN, HE RETRACTED THE FLAPS (LATER FOUND A 10 DEG). SUBSEQUENTLY, THE ACFT MUSHED INTO THE ROOF OF A HOUSE & CRASHED INTO A FENCE & PATIO OF AN ADJACENT HOME. AN EXAM REVEALED OIL ON THE UNDERSIDE OF THE FUSELAGE. THE OIL DRAIN SUMP PLUG,QUICK DRAIN,WAS FOUND IN THE OPEN POSITION & NO OIL WAS FOUND IN THE SUMP. THE FORWARD OIL BREATHER TUBE WAS CLOGGED. BEARING BABBIT MATERIAL WAS FOUND INTHE SUMP. THE OIL DRAIN O-RING WAS WORN, WHEN CLEANED/TESTED THE SUMP PLUG LEAKED.

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

MAINTENANCE..IMPROPER..OTHER MAINTENANCE PERSONNEL

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

LUBRICATING SYSTEM..LEAK

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

FLUID,OIL..EXHAUSTION


Contributing Factors

SUPERVISION..IMPROPER..PILOT IN COMMAND


Contributing Factors

QUALIFICATION..COPILOT/SECOND PILOT


Contributing Factors

LUBRICATING SYSTEM,OIL TUBING..BLOCKED(PARTIAL)


Contributing Factors

LUBRICATING SYSTEM,OIL SEAL..WORN



Contributing Factors

DISTANCE..MISJUDGED..COPILOT/SECOND PILOT


Contributing Factors

AIRSPEED..MISJUDGED..COPILOT/SECOND PILOT



Contributing Factors

OBJECT..RESIDENCE


Contributing Factors

OBJECT..FENCE

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