20060409004559I

Incident

FAA incident report · Amrgen AA-5 · Imperial Beach, CA · April 9, 2006

Date
April 9, 2006 · 11:06 local
Place
Imperial Beach, CA
Phase of flight
Descent
Operating rules
General operating rules (Part 91)
Aircraft
N5477L
Reported as
Amrgen AA5
Reported engine
Lycoming O320*
People aboard
2
Fatal injuries
0
Pilot’s flight hours
9,600 total100 in this make and model270 in the last 90 days

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) During the pilot's prelight, he discovered debris inside of the engine cowling consistent with what you might see when a bird is building a nest. He stated that he removed the material before departing. At about 2500 feet, he initiated a descent and selected carburetor heat. At this point, the engine quit and he was unable to get it restarted. He made a successful emergency landing at a nearby military airfield. When the engine cowling was removed, it was discovered that an oil-soaked cotton-like material had become lodged in the venturi of the carburetor. It was assumed that this was debris that had not been removed and was sucked into the carburetor when carburetor heat was selected. This material blocked the airflow through the carburetor and caused the engine to stop running.

As the FAA filed it

(-23) DURING THE PILOT'S PRELIGHT, HE DISCOVERED DEBRIS INSIDE OF THE ENGINE COWLING CONSISTENT WITH WHAT YOU MIGHT SEE WHEN A BIRD IS BUILDING A NEST. HE STATED THAT HE REMOVED THE MATERIAL BEFORE DEPARTING. AT ABOUT 2500 FEET, HE INITIATED A DESCENT AND SELECTED CARBURETOR HEAT. AT THIS POINT, THE ENGINE QUIT AND HE WAS UNABLE TO GET IT RESTARTED. HE MADE A SUCCESSFUL EMERGENCY LANDING AT A NEARBY MILITARY AIRFIELD. WHEN THE ENGINE COWLING WAS REMOVED, IT WAS DISCOVERED THAT AN OIL-SOAKED COTTON-LIKE MATERIAL HAD BECOME LODGED IN THE VENTURI OF THE CARBURETOR. IT WAS ASSUMED THAT THIS WAS DEBRIS THAT HAD NOT BEEN REMOVED AND WAS SUCKED INTO THE CARBURETOR WHEN CARBURETOR HEAT WAS SELECTED. THIS MATERIAL BLOCKED THE AIRFLOW THROUGH THE CARBURETOR AND CAUSED THE ENGINE TO STOP RUNNING.

Other reports on N5477L · 1

Matched to the same aircraft by N-number and date.