Crash of a Short 360-200 off Saint Martin: 2 killed

Date & Time: Oct 29, 2014 at 1840 LT
Type of aircraft:
Operator:
Registration:
N380MQ
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Saint Martin - San Juan
MSN:
3702
YOM:
1986
Flight number:
SKZ7101
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
2
Captain / Total flying hours:
5318
Captain / Total hours on type:
361.00
Copilot / Total flying hours:
1040
Copilot / Total hours on type:
510
Aircraft flight hours:
25061
Aircraft flight cycles:
32824
Circumstances:
On October 29, 2014, at about 1840 Atlantic Standard Time, a Shorts SD3-60, United States registered N380MQ was destroyed when it crashed into the sea shortly after takeoff from Runway 28 at Princess Juliana International Airport, Sint Maarten, Dutch Antilles, Kingdom of the Netherlands. The two crewmembers on board sustained fatal injuries. The aircraft was operated by SkyWay Enterprises Inc. on a scheduled FedEx contract cargo flight to Luis Munoz Marin International Airport, San Juan, Puerto Rico. At 1839 local, Juliana Tower cleared the aircraft for takeoff Runway 28 - maintain heading 230 until passing 4000 feet. At 1840 local, Tower observed the aircraft descending visually and the radar target and data block disappeared. There were no distress calls. Night conditions and rain prevailed at the time of the accident. Coast Guard search crews discovered aircraft debris close to the shoreline about 1 ½ hours later. The Sint Maarten Civil Aviation Authority initiated an investigation in accordance with ICAO Annex 13. Local investigation authority personnel were joined by Accredited Representatives and advisors from the following states: the USA (NTSB/FAA), United Kingdom (AAIB and Shorts Brothers PLC), and Canada (TSB, TC, PWC). Organization of the investigation included the following groups: Operations, Accident Site and Wreckage, Powerplants, Aircraft Maintenance, Air Traffic Services, Meteorology, and GPS Study. The operator made available personnel for interviews but deferred to participate in the groups. Flight recorders were not installed nor required on this cargo configured aircraft. The original FDR and CVR were removed following conversion to cargo only operations. A handheld GPS recovered from submerged wreckage was successfully downloaded. Data revealed the aircraft past the departure runway threshold on takeoff and attained a maximum GPS recorded altitude of 433 feet at 119 knots groundspeed at 18:39:30. The two remaining data points were over the sea and recorded decreasing altitude and increasing airspeed. The wreckage was recovered from the sea and examined by technical experts. Assessment of the evidence concluded there were no airframe or engine malfunctions that would have affected the airworthiness of the aircraft. The experts concluded that the aircraft struck the sea while under normal engine operation. Operations and human performance investigators evaluated the evidence and analyzed extensive interviews. The investigation concluded that the aircraft departed from the expected flight path in an unusual attitude. The pilot flying most likely experienced a somatographic illusion as a result of a stressful takeoff and acceleration from flap retraction. The pilot’s reaction to pitch down while initiating a required heading change led to an extreme unusual attitude. Circumstances indicate the pilot monitoring did not perceive/respond/intervene to correct the flight path and recover from the unusual attitude. The aircraft exceeded the normal maneuvering parameters, the crew experienced a loss of control, and lacking adequate altitude for recovery, the aircraft crashed into the sea.
Probable cause:
The investigation believes the PF experienced a loss of control while initiating a turn to the required departure heading after take-off. Flap retraction and its associated acceleration combined to set in motion a somatogravic illusion for the PF. The PF’s reaction to pitch down while initiating a turn most likely led to an extreme unusual attitude and the subsequent crash. PM awareness to the imminent loss of control and any attempt to intervene could not be determined. Evidence show that Crew resource management (CRM) performance was insufficient to avoid the crash. Contributing factors to the loss of control were environmental conditions including departure from an unfamiliar runway with loss of visual references (black hole), night and rain with gusting winds.
Final Report:

Crash of a Short 360-300 in Watertown

Date & Time: Feb 5, 2006 at 1654 LT
Type of aircraft:
Operator:
Registration:
N372AC
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Milwaukee - Milwaukee
MSN:
3720
YOM:
1987
Crew on board:
2
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
1524
Captain / Total hours on type:
630.00
Copilot / Total flying hours:
519
Copilot / Total hours on type:
122
Aircraft flight hours:
21996
Circumstances:
Prior to departure, both flight crews decided that they would join-up while in flight to take video and still pictures of each airplane. Both aircraft were Shorts Brothers SD-360-300 turboprop airplanes. While flying in formation, N3735W announced over the radio that they would turn right, toward N372AC, and descend. During the turn, N3735W's left wing impacted the left wing and engine of N372AC. After the collision, N372AC rolled to the left and pitched down significantly before the flight crew regained control of the airplane. After the collision, N372AC was losing hydraulic fluid and eventually had a complete hydraulic system failure. The airplane made an emergency landing at a nearby airport with its flaps retracted and its landing gear partially extended. The airplane overran the end of the runway, coming to rest about 100 feet from the departure threshold. White paint transfer markings and scrapes were observed on the left wing deice boot, the outboard side of the left engine cowling was crushed inboard, the left wing-strut leading edge was torn open and bent, and the lower fuselage skin, immediately forward of the landing gear wheel wells and stub wing, was torn from left to right, consistent with a propeller strike. N3735W impacted terrain and the airplane was destroyed during a subsequent ground fire. The flight crew and passenger were killed. The outboard three-quarters of the left wing was separated from the main wreckage and was not fire damaged. The upper wing surface had linear scrapes diagonally across the wing skin. The left aileron from N3735W was found on the runway where N372AC had landed.
Probable cause:
The other airplane's flight crew failure to maintain clearance while maneuvering during formation flight. Contributing to the accident was the decision of both flight crews to fly in formation.
Final Report:

Crash of a Short 360-300 in Watertown: 3 killed

Date & Time: Feb 5, 2006 at 1654 LT
Type of aircraft:
Operator:
Registration:
N3735W
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Milwaukee - Milwaukee
MSN:
3735
YOM:
1988
Crew on board:
2
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
3
Captain / Total flying hours:
1643
Captain / Total hours on type:
1181.00
Copilot / Total flying hours:
7015
Copilot / Total hours on type:
4984
Aircraft flight hours:
10077
Circumstances:
Prior to departure, both flight crews decided that they would join-up while in flight to take video and still pictures of each airplane. Both aircraft were Shorts Brothers SD-360-300 turboprop airplanes. While flying in formation, N3735W announced over the radio that they would turn right, toward N372AC, and descend. During the turn, N3735W's left wing impacted the left wing and engine of N372AC. After the collision, N372AC rolled to the left and pitched down significantly before the flight crew regained control of the airplane. After the collision, N372AC was losing hydraulic fluid and eventually had a complete hydraulic system failure. The airplane made an emergency landing at a nearby airport with its flaps retracted and its landing gear partially extended. The airplane overran the end of the runway, coming to rest about 100 feet from the departure threshold. White paint transfer markings and scrapes were observed on the left wing deice boot, the outboard side of the left engine cowling was crushed inboard, the left wing-strut leading edge was torn open and bent, and the lower fuselage skin, immediately forward of the landing gear wheel wells and stub wing, was torn from left to right, consistent with a propeller strike. N3735W impacted terrain and the airplane was destroyed during a subsequent ground fire. The flight crew and passenger were killed. The outboard three-quarters of the left wing was separated from the main wreckage and was not fire damaged. The upper wing surface had linear scrapes diagonally across the wing skin. The left aileron from N3735W was found on the runway where N372AC had landed.
Probable cause:
The flight crew failed to maintain clearance from another aircraft as they turned to break formation flight while maneuvering. Contributing to the accident was the decision of both flight crews to fly in formation.
Final Report: