Subscribe Free
in General Aviation / ATM & Regulatory

GCAA investigation into DA62 crash at Dubai

Posted 1 June 2020 · Add Comment

Accident investigators into the crash of a Diamond DA62 conduction calibration services at Dubai International Airport last year remain puzzled by the actions of the captain of the light aircraft as it repeatedly breached minimum separation distances from commercial traffic before the fatal wake-turbulence accident in May last year.


  

DA-62 was on a calibration mission at Dubai International when it crashed having suffered wake turbulance. PICTURE (C) Dubai Media Office


Analysis by the UAE’s regulator, the GCAA, showed the Flight Calibration Services DA62, which had been conducting approaches to runway 30L, had been 90 seconds behind a Thai Airways International Airbus A350-900 descending to the parallel 30R.

Vortices from the A350's left and right wing drifted with the crosswind at about 4.5m/s and respectively reached the 30L approach path after 74 seconds and 87 seconds, GCAA said

The analysis calculates that the vortices decayed to about 81% of their initial circulation strength at the point they reached the DA62 at 1,300ft altitude. The aircraft lost height, rolled and then dived steeply into the ground. None of the four on board survived the impact.

The preliminary report confirmed that wake vortex was the likely cause of the accident.

There had already been ten approaches by the DA62 with the captain having discretion to self-separate horizontally. Two A380s and four Boeing 777s were among the aircraft followed by the DA62, which trailed them by just 5-6nm compared with the Dubai standard of 9nm for the 777 and 11nm for the A380.

The captain had previously informed that Dubai air navigation service that he was experienced with calibration flights at the airport and was "content to be tighter" than normal wake separation. Investigators said that other company pilots described him as safety conscious and they sometimes consulted him on flight operational issues.

"The investigation carefully considered possible causes for the captain's misjudgment which led him to generally reduce the separation from other air traffic, but could not determine his reasoning," GCAA said.

According to Flightglobal’s analysis of the accident report, during the 10th approach the aircraft was 200ft below and 3.7nm behind the A350-900 - compared with the 6nm separation standard for ICAO and 9nm standard for Dubai - when it was struck by the wake vortex.
Airbus analysis using ICAO separation said the vortex would have been 35-49% of its maximum strength at the point of the DA62 encounter,” the report said.
 

* required field

Post a comment

Other Stories
Advertisement
Latest News

Falcon 6X gears up for first flight

Dassault Aviation is making steady progress toward an early 2021 planned first flight for its latest and roomiest aircraft, the Falcon 6X, despite the upheaval caused by the coronavirus epidemic.

Green recovery must embrace sustainable aviation fuels

The International Air Transport Association (IATA) has emphasised the aviation industry’s commitment to its emissions reduction goals.

Flydubai: Welcome to Dubai

Flydubai has begun welcoming tourists to Dubai following the lifting of flight restrictions that were put in place in response to the COVID-19 pandemic.

Why a holiday company took a trip into the unknown

Jordan has always been a tough location in which to operate. One young airline fighting to make its mark in the local market is Fly Jordan Airlines.

Iraq repatriation flight returns South Africans home

CemAir has welcomed 80 South Africans home from Iraq and Jordan on a special repatriation flight which touched down at OR Tambo International Airport on Wednesday morning.

Etihad in codeshare with Air Arabia Abu Dhabi

Etihad Airways has entered a codeshare agreement with Abu Dhabi’s first low-cost airline, Air Arabia Abu Dhabi.

GAS_SK2805200920
See us at
SaudiAirshow21BT2011180221GAS BT0907290920MAPS2020 BT1102171120