Sunday, April 16, 2017

Piper PA-22-150, N4356A: Accident occurred March 02, 2016 in Fountain Hills, Maricopa County, Arizona

Aviation Accident Final Report - National Transportation Safety Board: https://app.ntsb.gov/pdf

NTSB Identification: WPR16LA079
14 CFR Part 91: General Aviation
Accident occurred Wednesday, March 02, 2016 in Fountain Hills, AZ
Probable Cause Approval Date: 05/23/2017
Aircraft: PIPER PA 22-150, registration: N4356A
Injuries: 2 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

The private pilot reported that, after a preflight inspection and engine run-up revealed no anomalies, he and a passenger departed, circled a nearby mountain, then descended to an altitude about 750 ft above ground level. Shortly thereafter, the engine experienced a partial loss of power. The pilot attempted to restore engine power, but was unsuccessful, and he elected to land the airplane on a dry wash. As the airplane touched down, the right main landing gear sank into the dirt, and the airplane made a sharp turn to the right. The airplane impacted a tree and came to rest nose down. The atmospheric conditions at the time of the accident were not conducive to the formation of carburetor icing. A postaccident engine examination and test run revealed no anomalies that would have precluded normal operation; therefore, the reason for the loss of partial engine power could not be determined.

The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
A partial loss of engine power for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation.




The National Transportation Safety Board did not travel to the scene of this accident.

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Scottsdale, Arizona 

Aviation Accident Factual Report - National Transportation Safety Board:  https://app.ntsb.gov/pdf

Docket And Docket Items - National Transportation Safety Board: https://dms.ntsb.gov/pubdms

http://registry.faa.gov/N4356A

NTSB Identification: WPR16LA079
14 CFR Part 91: General Aviation
Accident occurred Wednesday, March 02, 2016 in Fountain Hills, AZ
Aircraft: PIPER PA 22-150, registration: N4356A
Injuries: 2 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

On March 2, 2016, about 1600 mountain standard time, a Piper PA-22-150 airplane, N4356A, executed a precautionary landing onto a sandy wash following a partial loss of engine power near Fountain Hills, Arizona. The private pilot and passenger were not injured; and the airplane sustained substantial damage to the wings. The airplane was registered to, and operated by, a private party as a 14 Code of Federal Regulations Part 91 personal flight. Visual meteorological conditions prevailed at the time of the accident, and no flight plan was filed. The local flight originated from Phoenix-Mesa Gateway Airport (IWA), Phoenix, Arizona at about 1540.

The pilot reported that after a normal preflight and run-up, he took off and circled a nearby mountain before descending to about 750 feet above the ground at a 2,400 RPM. As they followed a nearby river, the engine started to sputter and decrease to about 900 RPM; the pilot increased and decreased the throttle several times, but the engine never went above 1,200 RPM before it decreased again. He observed that the oil pressure was low; therefore, he attempted to switch fuel tanks, turned on carb heat, ensured the mixture was full rich, but the engine never responded. The pilot elected to land the airplane onto a dry wash. When the airplane touched down, the right main landing gear sunk into the dirt and the airplane made a sharp turn to the right. The airplane rolled along the dirt, impacted a tree, and came to rest nose down.

During a postaccident examination by a Federal Aviation Administration Inspector, the engine cowling was removed and no visual anomalies were noted with the engine. The propeller and spinner were removed; and a test run propeller and temporary fuel tank were installed. The engine was started and operated normally; slowly, the power was increased to 2,400 RPM and the oil pressure was normal. After operating for a short time, the power was decreased and the engine was shutdown. There were no anomalies noted that would have precluded normal operation.






NTSB Identification: WPR16LA079
14 CFR Part 91: General Aviation
Accident occurred Wednesday, March 02, 2016 in Fountain Hills, AZ
Aircraft: PIPER PA 22-150, registration: N4356A
Injuries: 2 Uninjured.

This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

On March 2, 2016, about 1600 mountain standard time, a Piper PA-22-150 airplane, N4356A, executed a precautionary landing onto a sandy wash following a partial loss of engine power near Fountain Hills, Arizona. The private pilot and passenger were not injured; and the airplane sustained substantial damage to the wings. The airplane was registered to, and operated by, a private party as a 14 Code of Federal Regulations Part 91 personal flight. Visual meteorological conditions prevailed at the time of the accident, and no flight plan was filed. The local flight originated from Phoenix-Mesa Gateway Airport (IWA), Phoenix, Arizona. 

The pilot reported that they were flying low, about 700 feet above the ground, taking pictures of the river when the airplane's engine started to sputter. The pilot added full power and ensured that the mixture and carburetor heat were full forward. Unable to regain full power, he landed the airplane on a sandy wash. During the landing roll, the airplane sunk into the sand and the right wing impacted vegetation. The airplane nosed over and came to rest with its back against a berm. 

The airplane has been recovered to a secure location for further examination.

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