Crash of a Piper PA-31T-620 Cheyenne II in Cascais: 5 killed

Date & Time: Apr 17, 2017 at 1204 LT
Type of aircraft:
Operator:
Registration:
HB-LTI
Flight Phase:
Flight Type:
Survivors:
No
Site:
Schedule:
Cascais – Marseille
MSN:
31T-8020091
YOM:
1980
Country:
Region:
Crew on board:
1
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
5
Captain / Total flying hours:
4900
Aircraft flight hours:
8323
Circumstances:
Shortly after takeoff from runway 17 at Cascais-Tires Airport, while climbing, the twin engine aircraft went out of control and crashed in flames on a Lidl parking lot located southeast of the airfield. The aircraft was destroyed by impact forces and a post crash fire and all four occupants were killed. The driver of a truck hit by the plane was also killed. Three other people were slightly injured. An adjacent house was destroyed by fire.
Probable cause:
The Safety Investigation Authority GPIAAF, determines the probable causes of this accident to be:
- The pilot’s failure to maintain the airplane control following the power loss in the left critical engine. The root cause for the left engine failure could not be determined due to the extensive impact damages and intensive fire.
Contributing factors:
- Lack of proper pilot training especially concerning the emergency scenario of critical engine failure immediately after takeoff.
Final Report:

Crash of a Beechcraft E90 King Air in Sotillo de las Palomas: 4 killed

Date & Time: Dec 4, 2016 at 1617 LT
Type of aircraft:
Registration:
N79CT
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Madrid – Cascais
MSN:
LW-303
YOM:
1979
Country:
Region:
Crew on board:
1
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
4
Circumstances:
The twin engine aircraft departed Madrid-Cuatro Vientos Airport on a private flight to Cascais, Portugal, carrying three passengers and one pilot. One of the reasons for the flight was to repair the weather radar at a Portuguese maintenance center that specialized in this equipment. The pilot had to delay the takeoff until 1557LT due to bad weather conditions. The aerodrome of Cuatros Vietnos was in instrument conditions (IMC), which forced its closing from 0900LT until 1444LT. At 1615LT, the aircraft was en route, climbing from flight level 190 to its authorized cruise level of 210. Moments later, according to a detailed analysis of the data taken from the radar, there was a yaw to the left, and the aircraft started to turn in this direction and suddenly lose altitude. After this event, the airspeed fell quickly and gradually until the aircraft stalled. The aircraft went into a spin, which after some time turned into a flat spin. As the airplane descended out of control, and with the spin fully developped, loads were placed on the horizontal tail that exceeded the design loads, causing the tail to break up in flight into five parts before the aircraft impacted the ground. The aircraft was completely destroyed by the impact and sibsequent fire, and its four occupants were killed in the accident.
Probable cause:
The investigation has concluded that this accident was caused by the loss of control of the aircraft in flight due to a stall and subsequent spin. Due to the high degree of destruction of the aircraft's wreckage after the ground impact and subsequent fire, and the lack of other pertinent data to do so, it has not been possible to determine with precision the sequence of the process leading to the aircraft stall/spin.
The investigation identified the following contributing factors:
- The decision to make the flight with adverse meteorological conditions (IMC) along the planned route, considering the fact that the weather radar was not operational.
- The forecast of moderate to strong icing conditions in areas of the route (presence of cumulonimbus with caps of up to 35,000 feet and with temperatures between -17°C and -19°C at flight level FL180) suggests that the formation of ice or its accumulation on the aircraft has been a significant contributory factor in this accident
- The use of the autopilot and the failure to disengage it when the emergency situation arose, as it is concluded from the detailed analysis of the radar data, could have contributed significantly to the process that resulted in the loss of control of the aircraft.
- The inadequate training of the pilot (who lacked the type rating for the accident aircraft) in abnormal or emergency situations on the accident aircraft.
Final Report:

Crash of a PAC 750XL in Cascais: 1 killed

Date & Time: Feb 12, 2010 at 1700 LT
Operator:
Registration:
D-FGOJ
Survivors:
Yes
Schedule:
Évora - Cascais
MSN:
139
YOM:
2008
Country:
Region:
Crew on board:
1
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
1
Circumstances:
The aircraft departed Evora Airport in the afternoon for a local flight with two skydivers, one photographer and a pilot on board. Few minutes after take off, the photographer output a weapon and ordered both skydivers to jump. After they left the cabin, the photographer then threatened the pilot and ordered him to divert to Cascais-Tires Airport. After landing, the aircraft veered off runway, lost its undercarriage and came to rest in a grassy area near the apron. The pilot was able to escape while the photographer shot himself and died. Aircraft was damaged beyond repair, both wings being partially sheared off.
Probable cause:
Aircraft and crew hijacked in flight by a 'photographer'.
Final Report:

Crash of a Britten-Norman BN-2A Islander in Serra de Monchique

Date & Time: Nov 6, 1982
Type of aircraft:
Operator:
Registration:
CS-AJO
Flight Phase:
Survivors:
Yes
Site:
Schedule:
Cascais – Portimão
MSN:
125
YOM:
1970
Country:
Region:
Crew on board:
1
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
En route from Cascais to Portimão, the pilot encountered poor weather conditions when the airplane lost height and crashed on a hill located in Serra de Monchique. All four occupants were rescued.

Crash of a De Havilland DH.80 in Cascais: 1 killed

Date & Time: Jul 19, 1936
Registration:
EC-VAA
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Cascais – Madrid
MSN:
2246
YOM:
1932
Country:
Region:
Crew on board:
1
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
1
Circumstances:
The single engine aircraft was performing a special flight from Cascais to Madrid with one pilot and one passenger on board. Shortly after takeoff, the aircraft encountered problems to gain height, hit trees and crashed. While the pilot was slightly injured, the passenger was killed. The Spanish civil war started three days earlier and the passenger, General José Sanjurjo Sacanell, was flying to Madrid to take the lead of the insurrection.
Crew:
Juan Ansaldo, pilot.
Passenger:
General José Sanjurjo Sacanell.
Probable cause:
It appears the aircraft was overloaded as the bags were too heavy.