Cessna 421B Golden Eagle II

The twin engine aircraft, operated by STS Avijacija (STS Aviation), departed Banja Luka on a charter flight to Tuzla, carrying two passengers and one pilot taking part to a foxes vaccination program. While cruising at low altitude, the airplane entered an area of clouds when it impacted trees and crashed on the slope of a mountain located near the Monastery of Ozren, southeast part of the Serbian Republic of Bosnia, bursting into flames. Both passengers were seriously injured and the pilot was killed.

The private pilot reported that he was approaching the airport for landing in the multi-engine airplane when both engines began to surge. The pilot attempted to switch to the auxiliary fuel tanks, but inadvertently switched the left engine fuel selector to the off position. The left engine subsequently experienced a total loss of engine power. On final approach for landing, the airplane impacted terrain and was subsequently consumed by a postimpact fire; the fuel onboard the airplane at the time of the accident could not be determined. An examination of the airplane's engines and systems revealed no mechanical anomalies that would have precluded normal operation.

The twin engine aircraft was performing a flight from Abbotsford to Tofino with two people on board (a father aged 51 and his son aged 25). On approach to Tofino Airport, on Vancouver Island, the aircraft impacted ground and crashed on Vargas Island, off Tofino. The burnt wreckage was found the following day and both occupants were killed.

En route from Cuernavaca to Guadalajara, while in cruising altitude, the pilot informed ATC about technical problems with the right engine. He was cleared to divert to Morelia Airport for an emergency landing. On final approach to runway 05, the twin engine aircraft crashed in an open field located about 2 km short of runway. All six occupants evacuated with minor injuries and the aircraft was damaged beyond repair.

The commercial pilot was distracted by the nose cargo door popping open during takeoff; the airplane stalled and collided with trees off the end of the runway. The pilot said there were no mechanical problems with the airplane or engines and that he was fixated on the cargo door and lost control of the airplane. He also said that due to stress, he was not mentally prepared to handle the emergency situation.

Following an uneventful flight from Bridgetown-Grantley Adams Airport, the pilot landed at Castries-George F. L. Charles (Vigie) Airport. Upon touchdown, the left main gear collapsed. The aircraft veered off runway and came to rest against a fence. The pilot was uninjured and the aircraft was damaged beyond repair.

The airplane impacted terrain shortly after takeoff. The wreckage distribution was consistent with a high airspeed, low angle-of-attack impact. Examination of the ground scars and wreckage indicated that the landing gear was down, the flaps were down, and the engines were operating at a high power setting at the time of impact. An examination of the airframe, engines, and related systems revealed no mechanical malfunctions or failures. According to the owner’s manual for the airplane, the flaps should have been retracted and the landing gear should have been brought up as soon as a climb profile was established. Based upon the location of the wreckage, the direction of the impact, and the location of the airport, it is likely that the airplane crashed within one or two minutes after takeoff. The extended landing gear and flaps degraded the climb performance of the airplane. The pilot held an airline transport pilot certificate and had recent night flight experience. Toxicological results were positive for azacyclonol and ibuprofen but were not at levels that would have affected his performance. According to family members, the pilot normally slept from 2230 or 2300 to 0700; the accident occurred at 0015. Although the investigation was unable to determine how long the pilot had been awake before the accident or his sleep schedule in the three days prior to the accident, it is possible that the pilot was fatigued, as the accident occurred at a time when the pilot was normally asleep. The company did not have, and was not required to have guidance or a policy addressing fatigue management.

Three minutes after takeoff from Tegucigalpa-Toncontin Airport, while in initial climb, the twin engine aircraft went out of control and crashed few km from the airport, bursting into flames. The aircraft was totally destroyed and all three occupants were killed.

Prior to the accident flight witnesses observed the pilot "haphazardly" pouring oil into the right engine. The pilot then ran the engines at mid-range power for approximately 20 minutes. The airplane subsequently taxied out of the ramp area and departed. Fire was observed emanating from the right engine after rotation. The airplane continued in a shallow climb from the runway, flying low, with the right engine on fire. The airplane then banked right to return to the airport and descended into a residential area. Examination of the right engine revealed an exhaust leak at the No. 4 cylinder exhaust riser flange. Additionally, one of the flange boltholes was elongated, most likely from the resulting vibration. The fuel nozzle and B-nut were secure in the No. 4 cylinder; however, its respective fuel line was separated about 8 inches from the nozzle. No determination could be made as to when the fuel line separated (preimpact or postimpact) due to the impact and postcrash fire damage. Examination of the right engine turbocharger revealed that the compressor wheel exhibited uniform deposits of an aluminum alloy mixture, consistent with ingestion during operation, and most likely from the melting of the aluminum fresh air duct. Additionally, the right propeller was found near the low pitch position, which was contrary to the owner's manual emergency procedure to secure the engine and feather the propeller in the event of an engine fire.

On September 15, 2008 Cessna 421B, N7560Q, was substantially damaged after it collided with mountainous terrain approximately 28 miles northwest of Ojinaga, Mexico, near the border town of Presidio, Texas. The air transport rated pilot and the three passengers were fatally injured. The pilot contacted the Fort Worth Automated Flight Service Station (AFSS), Fort Worth, Texas, at 1016, approximately 15 minutes after he departed El Paso International Airport, El Paso, Texas, and filed a visual flight rules flight plan to Presidio, Texas. The pilot informed an AFSS specialist that he intended to enter Mexican airspace for the purpose of flying over the Luis Leon Dam, but had no intentions of landing in Mexico. The pilot did not request a weather briefing for the flight however, he was informed by the specialist that visual flight rules were not recommended due to mountain obscuration. Onboard the airplane were the pilot, the United States and Mexican Commissioners of the International Boundary and Water Commission (IBWC), and the Executive Director for the Rio Grande Council of Governments. The purpose of the flight was to assess Rio Grande flood conditions at Presidio-Ojinaga and to coordinate joint US-Mexican efforts with local officials to address flood control concerns in the area due to heavy inflows to the Rio Grande from reservoirs inside Mexico as a result of recent storms. The airplane wreckage was located on September 17, 2008, by the Marfa Sector of the US Customs and Border Protection Air and Marine Division, on the west side of the Sierra Grande Mountains, at an approximate elevation of 6,500 feet mean sea level (msl). The airplane came to rest approximately 100-150 feet below the top of a ridgeline on a heading of 055 degrees along victor-airway V81.