Calibration

The aircraft was completing an aerial work mission (calibration), carrying six crew members. En route, the aircraft impacted trees and crashed in a wooded area located on the slope of Mt Khrebtovaya located in the Bolchoï Khekhtsir Mountain Range. The wreckage was found a day later at an altitude of 786 metres and some 38-40 km southwest from the Khabarovsk-Novy Airport. The aircraft was totally destroyed by impact forces and all six occupants were killed. At the time of the accident, the visibility was reduced to 2 km due to low clouds.

A Cessna S550 Citation S/II of the South African Civil Aviation Authority crashed into the Outeniqua mountains, near the town of Friemersheim. The three occupants were killed and the aircraft was destroyed. The Citation departed Port Elizabeth Airport (FAPE) on a positioning flight to George Airport (FAGG). On approach to FAGG, the flying crew requested to carry out a calibration flight for the very high frequency omnidirectional range (VOR) beacon at FAGG. Due to inclement weather conditions at the time, they were not cleared to conduct VOR calibration. As a result, they decided to land and refuel the aircraft before commencing with the calibration of the Instrument Landing System (ILS) on runway 11 at FAGG. The flying crew requested take-off from runway 11 and an early right turn to intercept radial 250°, 17 nautical miles (nm) DME arc to radial 330° at 3000 feet (ft) climbing to 4,000 feet. The air traffic control (ATC) granted their request. Radar data indicated that at 10:42, the aircraft took off from runway 11 and, once airborne, made a right-hand turn to intercept radial 250° using the George VOR (GRV VOR). The aircraft climbed to 3000ft. Once the aircraft reached 17 nm on the DME from the GRV VOR (DME is co-located with the VOR), it commenced with a right-hand turn to intercept radial 330° while maintaining 17nm DME arc. At 10:46, the ATC at FAGG advised the flying crew that they were now exiting controlled airspace and were advised to broadcast on the special rules frequency. The crew acknowledged the advisory to change frequency and there was no further communication. The aircraft was still being monitored by ATC using secondary surveillance radar. At 10:50, radar data showed the aircraft crossing radial 310° and entered a climb from 3000ft, reaching 3,900 feet. As the aircraft levelled off at 3,900 feet, a rapid descent occurred, and the aircraft lost 1500ft in approximately 9 seconds. Three seconds prior to impact, the aircraft nose pitched up before impacting a ridge at 2,192 feet. The aircraft was destroyed and all three occupants were killed.

The aircraft departed Kanoya AFB at 1315LT on a calibration flight with six people on board. After he complete a counter clockwise arc, the crew started the descent to Kanoya AFB Runway 08R. The visibility was poor due to low clouds. On approach, at an altitude of 3,000 feet, the aircraft entered clouds when the GPWS alarm sounded. Two second later, the crew deactivated the alarm and continued the approach. Ten seconds later, the aircraft impacted trees and crashed on the slope of Mt Takakuma (1,182 metres high) located 10 km north of the airbase. The wreckage was found a day later and all six crew members were killed.

The Aircraft mission was Calibration flight. The flight was planned for departure from Mehrabad airport, Tehran to Kish Island airport. Eight persons were onboard of the aircraft (3 Pilots, 4 Ground technicians, a Security guard member). The flight was under operation of Iran Aseman Airline with valid Air Operation Certificate (AOC No; FS-102). The aircraft has taken off from RWY 29L from THR airport at 15:03 Local time and reached to cruise level FL270.The aircraft has landed on RWY 09 L Kish island airports at 16:44 local time. Four ground technicians have got off from the aircraft and refueling was done. At time 17:44 LMT , the aircraft has taken off RWY 27R and requested to join Right downwind up to 1000 ft. and 8 miles from the airport. After successful performing 7 complete flight (approach & climbing) for Navigation – Aids inspection purposes; at the 8th cycle, just at turning to the final stage of approach before runway threshold the aircraft crashed into the sea and was destroyed at time 18:45 local time. All four occupants were killed.

Cessna 402C aircraft G-EYES was engaged in flight calibration training and was making an ILS approach to Runway 23 at Coventry Airport when it was involved in a mid-air collision with a Rand KR-2 aircraft, G-BOLZ, operating in the visual circuit. The collision occurred in Class G (uncontrolled) airspace. The four occupants of G-EYES and the single occupant of G-BOLZ received fatal injuries.

The crew departed Bishkek on a special flight to Issyk Kul and Naryn to proceed with the calibration of the ILS systems. About 30 minutes into the flight from Issyk Kul to Naryn, the right engine started to vibrate while the left engine temperature increased. After the right engine was shut down, the captain asked the flight engineer to reduce the power on the left engine by 80%. While flying in the Karakuzhur Valley and unable to maintain a safe altitude, the pilot remembered he was using in the past an old dirt strip for agricultural operations as he was flying Antonov AN-2. He attempted to land on this airstrip located at an altitude of 2,700 metres. Upon landing, the aircraft collided with rocks (larger than 40 cm) and drainage ditches and came to rest, bursting into flames. All 14 occupants escaped uninjured while the aircraft was destroyed.

The aircraft was dispatched at Xichang Airport to proceed to the calibration of the ILS system. Following a calibration of the runway 36 ILS, the crew initiated a go-around procedure and climbed to 8,000 feet. While completing a 180 turn to join the runway 36 approach pattern, the aircraft impacted a mountain (2,628 metres high) shrouded in clouds and located 15 km southwest of the airport. The aircraft was destroyed and all three crew members were killed. At the time of the accident, the aircraft was cruising at an altitude of 8,400 feet while the minimum altitude for this area is 9,000 feet.

The twin engine aircraft departed Donaueschingen-Villingen Airport in the afternoon on a local calibration mission. After several circuits over the area at an altitude of 7,000 feet, both NDB and DME systems have been calibrated and the crew was returning to the airport at the end of the afternoon. While approaching runway 36 in marginal weather conditions, the crew failed to realize his altitude was insufficient when the aircraft struck trees and crashed in a wooded area located about 15 km from the airport. The aircraft was destroyed and all four occupants were killed. According to published procedures, the crew was supposed to continue the approach at a minimum altitude of 4,500 feet until 11 km from the runway threshold then descending to 2,650 feet. For unknown reasons, the crew started the descent prematurely, causing the aircraft to impact terrain.

The aircraft departed Den Helder-De Kooy Airport on a radar tracking flight over the North Sea. Following an uneventful mission, the crew was returning to De Kooy Airport. After touchdown on runway 03, the crew activated the thrust reverser systems when the aircraft lost controllability. The pilot attempted to maintain control and selected the left throttle from 'reverse' again to turn to the right. Eventually, he feathered the right propeller and cut off the fuel supply, causing the right engine to stop. The aircraft veered off runway to the left and came to rest in a ditch. Both pilots escaped uninjured and the aircraft was damaged beyond repair.

The aircraft, operated by the Romanian Civil Aviation Authority (Autoritatea Aeronautică Civilă Romănă) departed Bucharest-Băneasa Airport on a calibration flight to Satu Mare and Baia Mare Airports, carrying five passengers and three crew members. The goal of the operation was to calibrate the precision approach radar and the IFR equipment at both Satu Mare and Baia Mare Airports. The mission at Satu Mare was completed successfully and the crew continued to Baia Mare Airport located about 43 km to the east. Following three successful approaches, the crew initiated a fourth descent when he was informed by ATC about the deterioration of the weather conditions with snow falls and a reduced visibility to 3 km. On approach, the crew failed to realize his altitude was too low when the aircraft struck trees and crashed onto a house located about 7,5 km short of runway 28. The aircraft and the house were destroyed. All eight occupants were killed as well as two people in the house. A third people on the ground was injured.