<1>  Perris Valley Airport, Perris, CA

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Airport Area Accident History:
Accident occurred Thursday, January 10, 2008 in Perris, CA
Probable Cause Approval Date: 7/30/2008
Aircraft: Corsario MK-5, registration: N9639H
Injuries: 1 Fatal.
The experimental amateur built amphibian airplane impacted hilly terrain within a sparsely populated area during daytime visual meteorological conditions . The wreckage site was near a lake and on scene documentation by the Federal Aviation Administration inspector indicated that the airplane was maneuvering at low level within sight of the lake shore when the left wing contacted terrain, followed by the fuselage. No radio transmissions were received by the pilot nor were there any witnesses to the accident sequence. A post accident examination of the airframe and engine revealed no anomalies that would have suggested mechanical malfunction or failure. After the initial on-scene examinations by the Federal Aviation Administration inspector, the wreckage recovery was delayed due to weather. Once access to the site was obtained, the recovery crew indicated that the majority of the wreckage had been removed and its disposition is unknown.

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

The pilot's failure to maintain clearance from terrain while maneuvering.

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Accident occurred Wednesday, September 19, 2007 in Perris, CA
Probable Cause Approval Date: 1/31/2008
Aircraft: St. Claire Ragtop-01, registration: N3134Q
Injuries: 2 Serious.
The airplane impacted a fence during an aborted landing and the airplane nosed into the ground. During the landing, the pilot noticed that the hand brake was not working. Approximately midfield, the pilot applied full power to abort the landing. A tractor was parked near the end of the runway and the pilot turned the airplane to the left in order to avoid it. During this turn, the left wheel impacted a chain link fence and the airplane impacted the ground. Due to damage sustained to the airplane, the source of the brake malfunction was not determined.

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

The pilot's failure to maintain control of the airplane during an aborted landing. Contributing factors to the accident were the fence and the undetermined brake malfunction.

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Accident occurred Monday, April 30, 2007 in Perris, CA
Probable Cause Approval Date: 7/25/2007
Aircraft: Cessna 177RG, registration: N177R
Injuries: 1 Minor.
The aircraft collided with trees during a forced landing following a loss of engine power. Approximately 12 nautical miles into the flight, the engine abruptly lost power. The pilot decided that he would attempt to land at a nearby airport but did not have sufficient altitude and the airplane landed 2.51 nautical miles short of the runway. During the engine examination, investigators noted that the cap and harness assembly of the single drive duel magneto was separated from the magneto. Closer examination revealed significant fretting signatures where the cap is seated against the housing of the magneto and was supposed to have been secured by four screws. There were no screws observed or found. There were no impact energy damage signatures on the cap, magneto, ignition harness, or firewall. The pilot stated that he was the last person to have the harness off the magneto.

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

a loss of engine power while in cruise flight due to an improperly installed magneto housing by the owner/pilot.

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Accident occurred Monday, June 28, 2004 in Perris, CA
Probable Cause Approval Date: 7/7/2005
Aircraft: SOCATA TB-20, registration: N110U
Injuries: 5 Uninjured.
The airplane collided with ground obstructions during a forced landing following a catastrophic engine failure due to oil exhaustion during cruise flight. Just after achieving cruise altitude the pilot was scanning the cockpit gauges and he noticed the oil pressure gauge indicating a loss of pressure, with the oil warning light flickering intermittently. About 5 minutes later, the engine started to vibrate, and subsequently seized, making a loud bang. The airplane began to descend about 1,000 feet per minute, and the pilot selected a dirt field to perform an emergency landing . During the landing roll, the airplane impacted a berm. An engine examination revealed that the inside top of the engine cowling showed a concentration of oil near the firewall on the left side, which is the approximate location of the vacuum pump. Removal of the vacuum pump revealed an oily film on both sides of the pump gasket, which is seated between the vacuum pump flange and
the engine accessory case flange. The vacuum pump had been installed about 0.5 hours prior to the accident. The mechanic who installed the pump said he used the gasket that was supplied with the pump. The manufacturer of the vacuum pump reported that they supply a gasket (part number AS3491-01) with their pump. In the TB-20 parts manual, the airplane manufacturer specifies that the gasket required is part number Z00.N7423254013, which they cross-reference with Textron Lycoming part number 8313. The investigation was unable to cross-reference or establish an equivalency between the AS3491-01 gasket supplied by the pump manufacturer with either the Lycoming or Socata specified gasket.

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

A loss of engine power due to oil exhaustion as a result of the mechanic's use of an incorrect gasket during the installation of the vacuum pump.

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Accident occurred Saturday, October 27, 2001 in Perris, CA
Probable Cause Approval Date: 9/29/2004
Aircraft: Thomson Harmon Rocket II, registration: N325L
Injuries: 2 Uninjured.
The amateur-built airplane nosed over during a forced landing in a soft field following the partial failure of the aileron and elevator control system . The two pilots flew the tandem seat airplane as part of the Phase 1 flight testing requirements following the completion of the experimental airplane's manufacture. At the conclusion of the flight test, the pilots noticed that there was something wrong with the flight controls when they went to return to their departure airport. The pilots determined that they had no aileron control and limited elevator control by use of the electric trim, but maintained rudder control. They elected to land in a field that would allow a straight in approach. The approach and landing were uneventful until the landing gear wheels dug into the soft dirt, resulting in the airplane nosing over. The FAA inspector, who examined the airplane following the accident, reported that the bolt and nut that connect the aileron and
elevator control tubes to the airframe were not in place. The airplane accumulated 6.9 flight hours since its manufacture and special airworthiness certification issuance. The rear-seat pilot was the airplane's builder.

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

the airplane builder's failure to properly install a bolt and nut into the aileron and elevator flight control system . A contributing factor was the soft terrain conditions for the ensuing forced landing.


Perris Valley Airport Approach / Landing: