Mesquite

On October 2, 2020, about 1512 central daylight time (CDT), a Piper PA-46-500TP, N62ZM, was substantially damaged when it was involved in an accident near Lake Elmo, Minnesota. The airline transport pilot sustained serious injuries. The airplane was operated as a Title 14 Code of Federal Regulations (CFR) Part 91 personal flight. The pilot reported that shortly after takeoff from runway 32 at the Lake Elmo airport (21D) and following landing gear retraction, he noticed a “hiccup” in the engine power and immediately started a turn back towards the airport. During the turn, all engine power was lost and the pilot executed a forced landing into a field of standing corn. The airplane impacted the terrain, bounced, and came to rest upright in the corn about ½ mile northwest of the departure end of runway 32. The airplane sustained substantial damage to the right wing as a result of the impact and post-crash fire. The airplane was equipped with a Pratt & Whitney PT6A turboprop engine.

While approaching class B airspace, the airline transport pilot was in communication with a controller who later stated that the pilot's speech was slurred, and the controller repeatedly asked if the oxygen system on the airplane was working properly. As the airplane approached a nearby airport, about 85 miles from his destination airport, the pilot stated he had the airport in sight and repeatedly requested a visual approach. The controller instructed the pilot to continue his flight to his destination, in a southwest direction. As the controller attempted to maintain communications, the pilot dropped off radar shortly after passing the nearby airport and subsequently landed at the nearby airport, which was not his destination airport. According to a surveillance video and impact marks on the runway, the airplane landed hard about halfway down the runway and slid to a stop on the left side of the runway. The airplane fuselage and wings were mostly consumed by postimpact fire. After authorities arrived onsite, the pilot was arrested for operating an aircraft under the influence of alcohol. The pilot was found to have a blood alcohol level of .288, which likely contributed to the pilot landing at the incorrect airport and his subsequent loss of airplane control during landing.

The pilot and eight parachutists were returning from a skydive meet. The pilot had obtained a weather briefing, which advised of instrument meteorological conditions at the destination, and filed a VFR flight plan, but it was never activated. Witnesses heard, but could not see, a twin engine turboprop pass over the airport, heading north out over the Great Salt Lake. They described the weather conditions as being a low ceiling with 1/4-mile visibility, light snow, haze, and fog. They said it was almost dark. The airplane impacted the water approximately 1/2-mile off shore. It had been stripped of all avionics except for one transceiver and a handheld GPS receiver. One member of the skydive club, who had flown with the pilot, said he had previously encountered poor weather conditions and descended over the Great Salt Lake until he could see the ground, then proceeded to the airport. Another member related a similar experience, but said they descended over the Great Salt Lake in the vicinity of the accident site. The pilot was able to navigate in deteriorating weather conditions to Tooele Airport, using various landmarks. Examination of the airframe, engines, and propellers did not reveal evidence of any anomalies that would have precluded normal operation.

After climbing to 18,400 feet msl, the pilot reported a turbocharger problem and reversed course. He said he 'may lose the left engine' and that he was unable to maintain altitude. He diverted to an alternate airport. During a right turn onto final approach, the airplane was observed to cross (overshoot) the extended centerline of the runway. It continued in a right turn back toward the centerline, and then entered a left turn to intercept the inbound course. The turn steepened, and then the airplane entered a spin and crashed 1/2 mile short of the runway. A warped flange and evidence of exhaust gas leakage were found on the Inconel exhaust system Wye collector, at the wastegate outlet of the left engine. Neither propeller was in a feather position. There was evidence that the left engine was providing low power during impact. A note on the pilot's clipboard indicated that the (left engine) fuel flow and cylinder head temperature went to zero, and the manifold pressure dropped to 10 inches. The note also indicated that the pilot switched the 'boost pump' to high, the fuel flow went to 260 psi, and manifold pressure increased to 18.5 inches. Calculations showed that the airplane's gross weight (GW) and center-of-gravity (CG) were 7,645 pounds and 158.32 inches. The maximum allowable GW and CG were 7,450 pounds and 158 inches. During impact, the flaps were fully extended. The 'Engine Inoperative Landing' procedure stated, 'Wing Flaps - DOWN when landing is assured.' Most of the pilot's flight time in the Cessna 421 was before 1985; no record was found of recurrent training in the airplane since 1984. Annual and turbocharger inspections were made at 78 and 120 flight hours, respectively, before the accident, but no logbook entries were made concerning maintenance or replacement parts for the exhaust system. All eight occupants were killed.

While en route, the pilot was cleared to deviate 20° left of course to avoid thunderstorm activity that ARTCC radar showed was right of course. The pilot reported turbulences, but demurred descending to a lower altitude despite a pirep of clear weather below. He then reported 'in a cell' with turbulences. Radar and radio contact with the aircraft were lost. Another pilot, who flew approximately 15 miles further south, reported no weather, but said there was extreme weather to the north with near constant lightning. Subsequently, N340MV impacted the ground in a steep nose-down, left wing low attitude, after a 14,000 feet descent. The landing gear was extended when the plane crashed. An exam of the wreckage revealed no preimpact structural failure or aircraft component malfunction. Also, the wreckage showed no evidence of weather damage from hail or lightning. However, weather info showed there was high altitude thunderstorm activity with turbulences in the area at the time of the mishap. Both occupants were killed.