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20011020028799I

Incident
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FAA incident report · Cessna 172R · San Martin, CA · October 20, 2001

FAA Aviation Safety Information Portal

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Date
October 20, 2001 · 13:15 local
Place
San Martin, CA
Airport
Santa Clara County Airport
Phase of flight
Normal Cruise
Operating rules
General operating rules (Part 91)
Aircraft
N9552A
Reported as
Cessna 172R
Reported engine
Lycoming IO360L2A
People aboard
2
Fatal injuries
0
N9552ARegistered now · Cessna 172RS/N 17280531 · Built 1998Airframe modelCessna 172REngine modelLycoming O&VO-360 seriesReciprocating

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

(-23) The pilot stated that he was on a VFR flight from watsonville CA to reid-hillview airport located in san jose, CA. While at cruising speed over anderson reservoir, the engine began to shake violently and lose power. He turned the aircraft around and headed directly toward south county airport located in San Martin, CA. The pilot announced the situation on 122.7 an dattempted to land on the runway. However, he was too high to make the runway and there was not enough engine power for a go around so he landed in a field just south of runway 14 at south county airport. Maintenance personnel at south county airport inspected the engine and found that the number one (1) cylinder rocker arm boss assembly failed causing the number one (1) cylinder to malfunction and lose power.

As the FAA filed it

(-23) THE PILOT STATED THAT HE WAS ON A VFR FLIGHT FROM WATSONVILLE CA TO REID-HILLVIEW AIRPORT LOCATED IN SAN JOSE, CA. WHILE AT CRUISING SPEED OVER ANDERSON RESERVOIR, THE ENGINE BEGAN TO SHAKE VIOLENTLY AND LOSE POWER. HE TURNED THE AIRCRAFT AROUND AND HEADED DIRECTLY TOWARD SOUTH COUNTY AIRPORT LOCATED IN SAN MARTIN, CA. THE PILOT ANNOUNCED THE SITUATION ON 122.7 AN DATTEMPTED TO LAND ON THE RUNWAY. HOWEVER, HE WAS TOO HIGH TO MAKE THE RUNWAY AND THERE WAS NOT ENOUGH ENGINE POWER FOR A GO AROUND SO HE LANDED IN A FIELD JUST SOUTH OF RUNWAY 14 AT SOUTH COUNTY AIRPORT. MAINTENANCE PERSONNEL AT SOUTH COUNTY AIRPORT INSPECTED THE ENGINE AND FOUND THAT THE NUMBER ONE (1) CYLINDER ROCKER ARM BOSS ASSEMBLY FAILED CAUSING THE NUMBER ONE (1) CYLINDER TO MALFUNCTION AND LOSE POWER.