The commercial pilot said he applied full power to go around after a bounced landing. Torque
generated by the turboprop engine pulled the airplane to the right, and the pilot stated that he
was unable to arrest the turn. The airplane collided with trees, resulting in substantial damage
to the right wing, fuselage, vertical stabilizer, both horizontal stabilizers, and the rudder. The
pilot reported there were no mechanical malfunctions or failures with the airplane or engine
that would have precluded normal operation.
Category: 2012
The pilot reported that the airplane floated during the landing flare, touched down long,
bounced, and went off the end of the runway. The airplane struck two ditches before coming to
rest on a road. The pilot stated that he should have recognized that braking action would be
significantly reduced with the possibility of hydroplaning, that pulling the power levers to the
stops before touchdown induced a lag in realization of reverse thrust, and that he should have
executed a go-around when the airplane floated before landing. No mechanical failures or
malfunctions of the airplane were reported. Heavy rain was reported about the time of the
accident at a nearby airport.
According to the pilot, during the landing on a grassy area that was parallel to the paved
runway, the airplane touched down and impacted a ditch near an intersecting taxiway. The
airplane became airborne, touched down on the other side of the intersecting taxiway, bounced
again, and then landed hard on the nose gear, which resulted in substantial damage to the
fuselage and subsequent collapse of the nose landing gear. In a telephone interview, the pilot
stated that the ditch was about 200 feet from his initial touchdown point and that he regularly
lands on the grass, in the opposite direction, in order to minimize the wear on the main landing
gear tires. No preaccident mechanical malfunctions or failures were noted with the airplane
that would have precluded normal operation.
The airplane had climbed to an altitude of about 11,000 feet mean sea level (msl) with 12 parachutists
seated inside the airplane on two rear-facing “straddle benches.” The airplane was flying at an indicated
speed of 100 mph with the flaps retracted. The operator’s written guidance for “skydiving jump runs”
indicated that the airspeed should be maintained at 110 to 120 mph and that the flaps should be set at 30
degrees. As the airplane arrived at the planned drop location, the parachutists stood up, opened the door,
and moved farther aft in the airplane to prepare for their jump. Five of the parachutists were positioned
aft of the straddle benches and were hanging onto the outside of the airplane, several of the other
parachutists were standing in the door, and the remainder of the parachutists were standing in the cabin
forward of the door. According to instructions on the operator’s skydiver briefing card, no more than
four jumpers should be allowed to occupy the door area during exit. Several parachutists heard the
sounds of the airplane’s stall warning system, and the airplane then suddenly rolled and began to
descend. All 12 parachutists quickly exited the airplane. Several witnesses reported seeing the airplane
turning and descending in an inverted nose-down attitude and then appear to briefly recover, but it then
entered a nearly vertical dive, which is consistent with a loss of control event as a result of an
aerodynamic stall and subsequent entry into a spin.
The pilot said that, while on short final, the airplane experienced a sudden sink rate when the
wind changed from a head wind to calm conditions. He was unable to arrest the sink rate even
after power was applied because of the lag time for the airplane’s turbine engine to spool up.
The airplane landed hard short of the runway. Postaccident examination of the airplane
revealed that the left side of the fuselage was dented and wrinkled, and the left main landing
gear was bent inboard of the axle and was missing its brake assembly.
As a skydiver was exiting the airplane, his parachute inadvertently deployed and struck the
right horizontal stabilizer. He deployed his reserve parachute and landed without further
incident. After all the skydivers had exited the airplane, the pilot saw that the right horizontal
stabilizer and elevator were damaged. After an uneventful landing, postaccident examination
revealed the right stabilizer spar was bent.
The pilot was returning to the airport after dropping off parachutists at 9,000 feet. He said that
the flight lasted about 30 minutes, and as he turned onto final approach in the traffic pattern,
he pulled the throttle back, and the engine lost power. The pilot performed a forced landing in
a field, and the airplane struck some power poles lying on the ground, resulting in substantial
damage to the airframe. Postaccident examination of the airframe and engine revealed no
evidence of a mechanical malfunction or anomaly that would have precluded normal
operation. Only residual fuel was recovered from the wing tanks, and there was no fuel in the
line from the tanks to the engine. The pilot stated that he should have monitored his fuel
gauges more closely.
Before the flight, the pilot did not obtain a weather briefing and departed without approval from
company personnel. The airplane departed the airport about 0230 and climbed to 14,500 feet mean sea
level. The pilot obtained visual flight rules (VFR) flight following services from air traffic control
(ATC) personnel during the flight. While the airplane was en route, ATC personnel advised the pilot that
an area of moderate precipitation was located about 15 miles ahead along the airplane’s flight path. The
pilot acknowledged the transmission and was then directed to contact another controller. About 3
minutes later, the new controller advised the pilot of an area of moderate to extreme precipitation about
2 miles ahead of the airplane. The pilot responded that he could see the weather and asked the controller
for a recommendation for a reroute. The controller indicated he didn’t have a recommendation, but
finished by saying a turn to the west (a right turn) away from the weather would probably be better. The
pilot responded that he would make a right turn. There was no further radio contact with the pilot. Flight
track data indicated the airplane was in a right turn when radar contact was lost. A review of the radar
data, available weather information, and airplane wreckage indicated the airplane flew through a heavy
to extreme weather radar echo containing a thunderstorm and subsequently broke up in flight.
Postaccident examination revealed no mechanical malfunctions or anomalies with the airframe and
engines that would have precluded normal operation.
The pilot reported that, during the final leg of the approach, the airplane was above the
intended approach path and speed. Over the threshold of the runway, the airplane encountered
a gust of wind. The pilot announced on the common traffic advisory frequency his intention to
perform a go-around maneuver. He was unable to perform the maneuver prior to the hard
landing; he then proceeded to overrun the runway and the airplane nosed over, which resulted
in substantial damage to the left wing. The pilot reported that there were no mechanical
malfunctions or failures with the airplane that would have precluded normal operation. The
recorded wind at the airport about the time of the accident was variable at 4 knots and for the
hour before and an hour after the accident the wind was recorded as calm.
The pilot stated that he departed the airport for the 15-minute skydiving flight with about 20
gallons of fuel onboard. After completing a jump run, he was returning to the airport and
maneuvered the airplane on final approach. When the airplane was about 3 miles from the
runway and about 1,200 feet above ground level, the engine experienced a partial loss of
power. The pilot configured the airplane for the best glide speed, and, shortly thereafter, the
engine quit producing any power. The airplane subsequently collided with trees in an orchard
about 600 yards from the approach end of the runway.
The pilot stated that he departed the airport with six parachutists for a jump flight. As the
airplane approached 1,000 feet above ground level, he noticed that the airplane wasn’t
climbing. He checked the engine gauges and noticed that the engine analyzer was flashing
“CHT” and the cylinder head temperature was 454 degrees F. As the pilot pitched the nose
down and turned back to the airport, he heard a muffled “thud” sound and saw white smoke
pour from the engine. As he prepared for a forced landing, four of the parachutists jumped
from the airplane. The pilot then performed a forced landing in a field, coming to a stop near a
dirt berm. An examination revealed a hole in the engine crankcase, near the No. 4 cylinder.
Various pieces of metal, including part of a “quick oil drain plug” were found in the engine oil
sump. The No. 4 connecting rod journal appeared distorted and displayed extensive heat
signatures. The crankshaft journals on either side of the No. 4 rod journals did not appear to be
distorted or to contain the same heat signatures and were coated with engine oil. The rod and
crankshaft bearings were scored. The signatures on the engine were consistent with the loss of
lubricant to the No. 4 connecting rod journal. A reason for the loss of engine oil to the journal
was not found.
The pilot said that he normally flew the airplane with the fuel selector positioned to the right
main fuel tank during skydiving operations. However, on the day of the accident, maintenance
was performed on the airplane, and three engine run-ups were performed using the left main
fuel tank. The pilot ferried the airplane back to its home base uneventfully with the left main
fuel tank selected. Before the accident flight, the pilot verified that there was adequate fuel in
the right main fuel tank; however, he did not reposition the fuel selector to the right main fuel
tank. During climb, about 800 feet above ground level, the airplane experienced a total loss of
engine power. The pilot was unable to restart the engine and performed a forced landing.
Subsequent examination revealed that the airplane’s right main fuel tank had been
compromised and was leaking fuel, whereas the left main fuel tank was intact and devoid of
fuel. Additionally, data downloaded from the airplane’s engine monitor revealed that the
engine power loss was preceded by a loss of fuel flow. Postaccident examination did not reveal
any preimpact mechanical malfunctions or failures that would have precluded normal
operation.
The balloon pilot conducted multiple sport parachute flights throughout the day without
obtaining a weather briefing. A SIGMET for severe thunderstorms, hail, and cloud tops to
45,000 feet was in effect for the area surrounding the takeoff and accident sites. Shortly after
the balloon lifted off on the accident flight, the ground crew was advised of a severe storm
warning for the area and observed the storm on radar via their cellular telephones. The crew
contacted the pilot by radio to advise him that the storm was growing quickly. The pilot
informed the ground crew that he would attempt to climb over the storm but shortly thereafter
expressed doubts that the balloon would be able to rise over it.
The pilot stated that, before starting the engine by manually rotating the propeller, he set the
brakes, throttle, and trim. He exited the airplane and proceeded to rotate the propeller. When
the engine started, it went to full rpm, and the airplane started to move forward on the taxiway
at a high speed. The airplane veered off the taxiway and continued its high speed taxi until it
impacted a hangar door, damaging the engine, both wings, and the right main landing gear.
The pilot reported that he had not chocked the airplane and thought the brake was set. He
further reported there were no mechanical problems with the airplane.