Loss of Control in Flight · NTSB WPR18FA228

Pietenpol AIRCAMPER — Camp Verde, AZ

2 fatal High-time pilot
DateAugust 18, 2018
LocationCamp Verde, AZ
AircraftPietenpol AIRCAMPER (amateur-built)
Purpose of flightPersonal
ConditionsDay · Visual Meteorological Cond
Phase / occurrenceUnknown Collision with terr/obj (non-CFIT)
Pilot age68
Pilot total time1,421 hrs · Experienced
Time in type0 hrs
Fatalities2

Probable cause

Loss of control for reasons that could not be determined because postaccident examination of the airframe and engine revealed no mechanical anomalies that would have precluded normal operation.

NTSB findings

  • Aircraft-Aircraft oper/perf/capability-Performance/control parameters-(general)-Not attained/maintained
  • Environmental issues-Physical environment-Terrain-Mountainous/hilly terrain-Contributed to outcome

What happened

The pilot and passenger departed on a local area flight. When the flight did not return a search was initiated and the wreckage was located later in the evening in hilly, uneven desert terrain. The wreckage debris field was contained within about a 10-foot radius of the main wreckage. All flight control surfaces remained attached and flight control continuity was established. The wing assembly was deformed in the middle section with the left portion of the wing pushed up and over the main spar; the right wing was pushed down. It is likely that the airplane was in an uncontrolled attitude at the time of impact with terrain.

A visual examination of the engine revealed no holes in the engine case. Postaccident examination of the engine revealed carbon buildup in the cylinder barrels and piston faces and worn spark plugs. The wooden propeller remained attached to the crankshaft and engine. There were no mechanical anomalies revealed that would have precluded normal operation.

An editorial "what led to it / how to avoid it" analysis for this accident is generated separately and will appear here.

View the official NTSB docket →