Follow along with the video below to see how to install our site as a web app on your home screen.
Nota: This feature may not be available in some browsers.
Information released by Rosaviatsia on Nov 28th 2013 based on preliminary investigation results by MAK states, that the captain of the flight (47, ATPL, 2736 hours total, 2509 hours on type, 528 hours in command) was rated for CAT I ILS approaches only, the first officer (47, no type of pilot rating provided, 2093 hours total, 1943 hours on type) was rated for CAT II ILS approaches.
According to preliminary information the crew was significantly (4km) off the approach track prompting ATC to query the crew. Corrections were made, the aircraft remained significantly right of the extended runway centerline however until the crew selected heading 250 into autopilot (heading select mode) and the aircraft intercepted the localizer automatically about 2nm short of the runway threshold at about 1000 feet AGL, the glideslope did not capture due to height however. After passing the missed approach point the crew discussed a go-around and communicated with dispatch, then disengaged both autopilots engaged in the automatic approach and continued manually on flight director. Engines accelerated to 83% N1 (near Go-Around Thrust) and continued at that speed until almost impact.
The aircraft began to pitch up under the influence of engine acceleration and flaps retraction reaching 25 degrees nose up, the stabilizer trim system wound - most likely automatically - nose down commanding the aircraft into a dive. In the meantime the crew retracted the gear, there had been no input on the yoke since deactivation of autopilot until that time, the airspeed had decayed from 150 to 125 KIAS. The crew now applied full forward pressure, the aircraft began to accelerate again after reaching a minimum speed of 117 KIAS at 700 meters/2300 feet above the runway, and began to rapidly descent, EGPWS alerts "SINK RATE" and "PULL UP" sounded, there was no reaction to the extreme nose down attitude however and the vertical acceleration became negative. The aircraft impacted ground at 75 degrees nose down at about 450 kph at coordinates N55.608818 E49.276852, the impact occurred 45 seconds after initiating the go-around and 20 seconds after reaching the maximum height.
Initial safety recommendations released are to provide simulator training on balked landings, especially when close to the target altitude for the climb, provide training on recognition of complex spatial disorientation and upset recovery, provide training on operation and characteristics of aircraft systems especially autopilot and flight director during approach and missed approach, study the features of navigation system (FMS), consider revision of air traffic control procedures to provide more assistance to crews with technical failures including providing vectors to guide the aircraft onto the runway and conduct a conference to share technical flight experiences amongst operators.
Scenario One:
Automatic Flight Director System (AFDS) configured for autoland: CMD A & B engaged with localizer and glideslope captured and “FLARE armed” and annunciated on the Flight Mode annunciator (FMA). Auto throttle engaged.
Pushing the TOGA buttons will engage the Take Off / Go Around mode & Flight Director guidance will "come alive"
The auto throttle will automatically move forward to produce reduced go around (RGA) thrust
The autopilot will remain engaged and will pitch upwards to follow the Flight Director (FD) guidance
Landing gear will need to be raised and flaps retracted on schedule
A “bug up” will be observed on the speed tape of the Primary Flight Director (PFD) which indicates flap retraction speeds
Scenario Two
Automatic Flight Director System (AFDS) configured for manual landing: CMD A or B engaged. Auto throttle engaged.
Pushing TOGA buttons will engage the Take Off / Go Around mode & Flight Director Guidance will "come alive"
The auto throttle will automatically move forward to produce reduced go-around thrust. However, the autopilot will disconnect
The crew will need to take control and manually fly to follow the Flight Director guidance (around 15 Degrees nose up)
Landing gear will need to be raised and flaps retracted on schedule
A “bug up” will be observed on the speed tape of the Primary Flight Director (PFD) which indicates flap retraction speeds
Er wordt ook minder gevlogen. Had graag per gevlogen km gezien.Aantal ongelukken luchtvaart nog nooit zo laag
Aantal doden luchtvaart nog nooit zo laag | nu.nl/algemeen | Het laatste nieuws het eerst op nu.nl
Er wordt ook minder gevlogen. Had graag per gevlogen km gezien.
Vraag aan Raymond:
Op het moment dat de piloten heading 250 opgaven aan de autopiloot om de localizer te pakken te krijgen, is toen de AFDS automatisch van autoland naar manual land geschakeld? Of is het zelfs mogelijk dat dit al gebeurde op het moment dat het toestel de glideslope niet te pakken kreeg? (Dat lijkt namelijk een voorwaarde voor autoland)
Na het activeren van TOGA gaan de motoren door de autothrottle automatisch meer stuwdruk leveren, maar de autopiloten stoppen er mee! Ik denk dat de piloten dit niet of te laat door hebben gehad!