19980322004029A

Accident · Destroyed

FAA accident report · Cessna U206G · Grain Valley, MO · March 22, 1998

Date
March 22, 1998 · 17:52 local
Place
Grain Valley, MO
Airport
East Kansas City Airport
Phase of flight
Fcd/Prec Ldg From Cruise
Operating rules
Parachute jumping (Part 105)
Damage
Destroyed
Aircraft
N506SD
Reported as
Cessna U206G
Reported engine
Continental IO520D
People aboard
6
Fatal injuries
6
Pilot’s flight hours
6,550 total

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.

Thru a rod on climbout. Smoke fire. Pilot overcome by smoke. Stall spin and burned on impact. Out of CG unairworth (-23) preliminary investigation and witness reports indicate an engine failure during climbout from independence memorial airport. The pilot elected to attempt landing at East Kansas City Airport, Grain Valley, MO. The aircraft was destroyed when it struck the ground near runway 27 and was consumed by the post impact fire. The connecting rods from the no. 2 and no.6 cylinders were found broken and had punctured through the engine case. Investigation into the cause of this accident is not complete. (.4)the parachute jump flight's airplane was at 3,700 feet MSL when the pilot cancelled the operation with the FAA approach controller without explanation. Witnesses observed the airplane trailing white and black smoke. One witness said he saw the airplane trailing black smoke with its engine making a banging sound. Three witnesses at the accident airport said the airplane had smoke and flames coming from the airplane's cowl and along the windshield as it approached the airport. They said the airplane banked right at a low altitude with its right wingtip striking the ground. The airplane caught fire during the collision sequence. The on-scene investigation revealed the engine, left side of the fuselage, bottom of left wing and its strut and the horizontal stabilizer and elevator were covered with oil film. The engine's oil filler tube was missing. The three filler tube mounting screws were not found at the accident site. Two of the 3 filler tube screw mounting holes had 2 of the screw threads next to the engine case's exterior surface pulled upward. The third screw hole threads were not pulled. The number 6 cylinder valve rocker arm cover had 5 of its 6 screws missing. The remaining screw was loose. The number 6 cylinder's bottom spark plug lead nut was disconnected. Its threads were not pulled. Examination of the engine revealed about 70 percent of the oil screen was covered by silver and bronze colored metallic debris. Holes were observed on the engine's left crankcase section near cylinders number 2 and 6. The engine's internal components suffered damage typical of oil loss and heat distress. The fracture face features on the engine's fractured left crankcase section were typical of overstress.

As the FAA filed it

THRU A ROD ON CLIMBOUT. SMOKE FIRE. PILOT OVERCOME BY SMOKE. STALL SPIN AND BURNED ON IMPACT. OUT OF CG UNAIRWORTH (-23) PRELIMINARY INVESTIGATION AND WITNESS REPORTS INDICATE AN ENGINE FAILURE DURING CLIMBOUT FROM INDEPENDENCE MEMORIAL AIRPORT. THE PILOT ELECTED TO ATTEMPT LANDING AT EAST KANSAS CITY AIRPORT, GRAIN VALLEY, MO. THE AIRCRAFT WAS DESTROYED WHEN IT STRUCK THE GROUND NEAR RUNWAY 27 AND WAS CONSUMED BY THE POST IMPACT FIRE. THE CONNECTING RODS FROM THE NO. 2 AND NO.6 CYLINDERS WERE FOUND BROKEN AND HAD PUNCTURED THROUGH THE ENGINE CASE. INVESTIGATION INTO THE CAUSE OF THIS ACCIDENT IS NOT COMPLETE. (.4)THE PARACHUTE JUMP FLIGHT'S AIRPLANE WAS AT 3,700 FEET MSL WHEN THE PILOT CANCELLED THE OPERATION WITH THE FAA APPROACH CONTROLLER WITHOUT EXPLANATION. WITNESSES OBSERVED THE AIRPLANE TRAILING WHITE AND BLACK SMOKE. ONE WITNESS SAID HE SAW THE AIRPLANE TRAILING BLACK SMOKE WITH ITS ENGINE MAKING A BANGING SOUND. THREE WITNESSES AT THE ACCIDENT AIRPORT SAID THE AIRPLANE HAD SMOKE AND FLAMES COMING FROM THE AIRPLANE'S COWL AND ALONG THE WINDSHIELD AS IT APPROACHED THE AIRPORT. THEY SAID THE AIRPLANE BANKED RIGHT AT A LOW ALTITUDE WITH ITS RIGHT WINGTIP STRIKING THE GROUND. THE AIRPLANE CAUGHT FIRE DURING THE COLLISION SEQUENCE. THE ON-SCENE INVESTIGATION REVEALED THE ENGINE, LEFT SIDE OF THE FUSELAGE, BOTTOM OF LEFT WING AND ITS STRUT AND THE HORIZONTAL STABILIZER AND ELEVATOR WERE COVERED WITH OIL FILM. THE ENGINE'S OIL FILLER TUBE WAS MISSING. THE THREE FILLER TUBE MOUNTING SCREWS WERE NOT FOUND AT THE ACCIDENT SITE. TWO OF THE 3 FILLER TUBE SCREW MOUNTING HOLES HAD 2 OF THE SCREW THREADS NEXT TO THE ENGINE CASE'S EXTERIOR SURFACE PULLED UPWARD. THE THIRD SCREW HOLE THREADS WERE NOT PULLED. THE NUMBER 6 CYLINDER VALVE ROCKER ARM COVER HAD 5 OF ITS 6 SCREWS MISSING. THE REMAINING SCREW WAS LOOSE. THE NUMBER 6 CYLINDER'S BOTTOM SPARK PLUG LEAD NUT WAS DISCONNECTED. ITS THREADS WERE NOT PULLED. EXAMINATION OF THE ENGINE REVEALED ABOUT 70 PERCENT OF THE OIL SCREEN WAS COVERED BY SILVER AND BRONZE COLORED METALLIC DEBRIS. HOLES WERE OBSERVED ON THE ENGINE'S LEFT CRANKCASE SECTION NEAR CYLINDERS NUMBER 2 AND 6. THE ENGINE'S INTERNAL COMPONENTS SUFFERED DAMAGE TYPICAL OF OIL LOSS AND HEAT DISTRESS. THE FRACTURE FACE FEATURES ON THE ENGINE'S FRACTURED LEFT CRANKCASE SECTION WERE TYPICAL OF OVERSTRESS.