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20180803013629I

Incident · Minor damage
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FAA incident report · Cessna 206H · St. Louis, MO · August 3, 2018

FAA Aviation Safety Information Portal

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Date
August 3, 2018 · 13:17 local
Place
St. Louis, MO
Phase of flight
Maneuver
Operating rules
General operating rules (Part 91)
Damage
Minor damage
Aircraft
N9536F
Reported as
Cessna 206H
Reported engine
Lycoming IO-540-AC1A5
People aboard
1
Fatal injuries
0
Other injuries
0
N9536FRegistered now · Cessna 206HS/N 20608336 · Built 2012Airframe modelCessna 206HEngine modelLycoming IO-540-AC1A5Reciprocating

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.

N9536F departed spirit of St. Louis airport (ksus) and was on a VFR photo flight in the vicinity of lambert airport (kstl) aprroximalty 5 NM east of the airport. During the flight no indications of an imminent issues was noticed by the pilot. During a turn the aircraft experienced partial power loss. Immediately the pilot flew directly to cardinal VOR, and shortly after being advised by ATC of trailing white smoke, the pilot declared an emergency and land at saint. Louis airport (kstl) on runway 29 without incident. The aircraft was towed off the runway and secured. After the maintenance technician arrived on site, it was noted a significant amount of engine oil in the exhaust system. A compression test was completed and found zero compression on the number one cylinder. A borescope inspection was performed and found the intake valve had broken and struck the number one piston. Removing the oil filter and cutting open it was noted a significate amount of metal in the filter. The engine was removed and sent to Lycoming for disassemble and inspection.

As the FAA filed it

N9536F DEPARTED SPIRIT OF ST. LOUIS AIRPORT (KSUS) AND WAS ON A VFR PHOTO FLIGHT IN THE VICINITY OF LAMBERT AIRPORT (KSTL) APRROXIMALTY 5 NM EAST OF THE AIRPORT. DURING THE FLIGHT NO INDICATIONS OF AN IMMINENT ISSUES WAS NOTICED BY THE PILOT. DURING A TURN THE AIRCRAFT EXPERIENCED PARTIAL POWER LOSS. IMMEDIATELY THE PILOT FLEW DIRECTLY TO CARDINAL VOR, AND SHORTLY AFTER BEING ADVISED BY ATC OF TRAILING WHITE SMOKE, THE PILOT DECLARED AN EMERGENCY AND LAND AT SAINT. LOUIS AIRPORT (KSTL) ON RUNWAY 29 WITHOUT INCIDENT. THE AIRCRAFT WAS TOWED OFF THE RUNWAY AND SECURED. AFTER THE MAINTENANCE TECHNICIAN ARRIVED ON SITE, IT WAS NOTED A SIGNIFICANT AMOUNT OF ENGINE OIL IN THE EXHAUST SYSTEM. A COMPRESSION TEST WAS COMPLETED AND FOUND ZERO COMPRESSION ON THE NUMBER ONE CYLINDER. A BORESCOPE INSPECTION WAS PERFORMED AND FOUND THE INTAKE VALVE HAD BROKEN AND STRUCK THE NUMBER ONE PISTON. REMOVING THE OIL FILTER AND CUTTING OPEN IT WAS NOTED A SIGNIFICATE AMOUNT OF METAL IN THE FILTER. THE ENGINE WAS REMOVED AND SENT TO LYCOMING FOR DISASSEMBLE AND INSPECTION.