Byte Boador

  • Mensagens: 124
“Success is not final, failure is not fatal.
It is the courage to continue that counts“

Winston Churchill

Byte Boador

  • Mensagens: 124
Mais algumas informações relativamente a este acidente com um challenger 604:

https://aviation-safety.net/database/record.php?id=20180311-0
“Success is not final, failure is not fatal.
It is the courage to continue that counts“

Winston Churchill

Byte Boador

  • Mensagens: 124
https://aviation-safety.net/database/record.php?id=20180311-0

Citação
A Turkish Challenger 604 corporate jet impacted a mountain near Shahr-e Kurd in Iran, killing all 11 on board.
The aircraft departed Sharjah, UAE at 13:11 UTC on a flight to Istanbul, Turkey. The aircraft entered Tehran FIR fifteen minutes later and the Tehran ACC controller cleared the flight to climb to FL360 according to its flight plan. About 14:32, the pilot requested FL380, which was approved. Before reaching that altitude, the left and right airspeeds began to diverge by more than 10 knots. The left (captain's) airspeed indicator showed an increase while the right hand (copilot's) airspeed indicator showed a decrease.
A caution aural alert notified the flight crew of the difference. Remarks by the flight crew suggested that an 'EFIS COMP MON' caution message appeared on the EICAS.
As the aircraft was climbing, the crew reduced thrust to idle. Approximately 63 seconds later, while approaching FL380, the overspeed aural warning (clacker) began to sound, indicating that the indicated Mach had exceeded M 0.85. Based on the Quick Reference Handbook (QRH) of the aircraft, the pilot flying should validate the IAS based on the aircraft flight manual and define the reliable Air Data Computer (ADC) and select the reliable Air Data source. The pilot did not follow this procedure and directly reduced engine power to decrease the IAS after hearing the clacker. The actual airspeed thus reached a stall condition.
The copilot tried to begin reading of the 'EFIS COMP MON' abnormal procedure for three times but due to pilot interruption, she could not complete it. Due to decreasing speed, the stall aural warning began to sound, in addition to stick shaker and stick pusher activating repeatedly. The crew then should have referred to another emergency procedure to recover from the stall condition.
While the stick pusher acted to pitch down the aircraft to prevent a stall condition, the captain was mistakenly assumed an overspeed situation due to the previous erroneous overspeed warning and pulled on the control column. The aircraft entered a series of pitch and roll oscillations.
The autopilot was disengaged by the crew before stall warning, which ended the oscillations. Engine power began to decrease on both sides until both engines flamed out in a stall condition.
From that point on FDR data was lost because the electric bus did not continue to receive power from the engine generators. The CVR recording continued for a further approximately 1 minute and 20 seconds on emergency battery power. Stall warnings, stick shaker and stick pusher activations continued until the end of the recording.
The aircraft then impacted mountainous terrain.

Unstable weather conditions were present along the flight route over Iran, which included moderate up to severe turbulence and icing conditions up to 45000ft.
“Success is not final, failure is not fatal.
It is the courage to continue that counts“

Winston Churchill

Resposta rápida

Com a resposta rápida pode escrever uma mensagem quando está a ver um tópico sem carregar uma nova página. Pode, ainda, usar o código BBC e os risonhos como usaria numa mensagem normal.

Nota: esta mensagem não irá aparecer até ter sido aprovada por um moderador.
Nome: Email:
Verificação:

 

Tópicos Relacionados

  Assunto / Iniciado por Respostas Última mensagem
2 Respostas
1011 Visualizações
Última mensagem 11 de Agosto 2014, 14:50:17
por D-Zign
0 Respostas
568 Visualizações
Última mensagem 03 de Setembro 2014, 17:25:21
por Flyz
2 Respostas
670 Visualizações
Última mensagem 19 de Fevereiro 2015, 02:17:36
por A350XWB
2 Respostas
718 Visualizações
Última mensagem 17 de Novembro 2016, 23:18:03
por iSeven
0 Respostas
203 Visualizações
Última mensagem 09 de Novembro 2018, 14:43:44
por Tiago Maia

Total 62+0=62 ms, db 0 ms, php 62 ms