NTSB Identification: LAX08CA036.
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Accident occurred Friday, December 07, 2007 in Battle Mountain, NV
Probable Cause Approval Date: 02/28/2008
Aircraft: Piaggio Aero Industries S.P.A. Avanti P-180, registration: C-GPIA
Injuries: 2 Uninjured.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

During the landing roll, the flight crew engaged the nose wheel steering just below 60 knots indicated airspeed, and the airplane made an abrupt left turn. The crew attempted to correct the turn, but were unsuccessful. The airplane completed a 180-degree turn, and slid backwards down the runway before it departed the left side of the pavement. The right main landing gear collapsed after sinking in soft mud. The airplane sustained substantial damage to the right wing, right aileron, and the fuselage. Examination of the nose gear steering system, hydraulics, brakes, and rudder system by an FAA airworthiness inspector, and a representative from the airplane's manufacturer, found no mechanical anomalies. The Pilot's Operating Handbook (POH) states that "Steering engagement during landing is prohibited." The POH requires that the nose wheel steering be disengaged at or before 60 knots during the takeoff. During the interview with the pilots, they said they were unaware of the prohibition against engaging the nose wheel steering during landing. They noted that because the steering system is used up to 60 knots during takeoff, they assumed that the nose gear steering was to be engaged after touchdown during the landing roll, while slowing through 60 knots.

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

The flight crew's failure to follow published procedures/directives in the Pilot's Operating Handbook during landing.

Full narrative available

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