Mudanças nos vôos sobre ocêano

As companhias aéreas estão apertando para usar bi-motor em vôos longos sobre os oceanos.

Essas aeronaves são mais baratas para operar, pequenas e rentáveis. O problema é que isto também é mais arriscado para o usuário desses vôos.

O FAA recentemente abriu a porta para este tipo de operação, aumentando o tempo de vôo que um bi-motor pode ficar longe de um bom aeroporto, as regras originais eram de 180 minutos com a aeronave voando com um motor, agora passou para 320 minutos voando mono até chegar em um aeroporto de alternativa. 

Vamos ilustrar a diferença:

CHECKLIST DE UM 777 EM EMERGÊNCIA (2 MOTORES)

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B-777 OVERWATER ENGINE FAILURE Suggested sequence of events

1. Crew maintains control of A/C.
2. Crew handles QRC immediate action items correctly.
3. Crew agrees upon enroute diversion alternate (SATCOM- DSP)
4. PF begins off-track maneuver. HDG SEL 90 from track in direction of alternate
5. Crew turns on all external lights.
6. PF begins drift down. Call for MCP alt set to VNAV ENG OUT cruise alt. EO speed or 320/.83 whichever is most reasonable considering terrain.
7. PF ensures MCT, monitors A/C performance, PNF handles comm.
8. PNF declares emergency with mayday on guard, common and/or HF as appropriate
9. PNF gives position, Flight ID, Track, Longitude/Latitude and altitude with all calls.
10. PNF requests clearance to enroute alternate with GP facility or guard relay.
11. Crew recalls pilots on break to cockpit via PA.
12. PNF records FMC position in scratch pad to be entered on plotting chart and to be forwarded to dispatch via MFD "MAYDAY" report or SATCOM link.
13. PNF completes checklist reference items.
14. PNF builds offset 25NM Pacific/30NM Atlantic (Offset execute or LNAV armed optional HDGSEL may be required if ETOPS alternate behind) Cross tracks below FL 290 Pacific/FL285 Atlantic.
15. PNF copies clearance to alternate.
16. Crew proceeds to alternate at 325kts /mach .83 when able at SE altitude.
17. PNF communicates with DD, FA's, SAMC and Pax as required.
18. Crew initiates preparation for ditching and/or evacuation if necessary.
19. Crew prepares estimates for FIRs or diversion airport.
20. Crew plots FMC position every 15 minutes on plotting chart on line drawn from initial diversion point to alternate.
21. Crew reviews ditching procedures if necessary.
22. Crew requests RCC information via DD if necessary.
23. Crew briefs approach, evacuation potential, runway exit plan and crew member assignments as necessary.
* If the EO SPD (slower drift down IAL) is chosen, about 2 minutes will be available for deceleration at altitude on the track before a descent becomes necessary and the initial rate of descent will be very slow with MAX CONT thrust set on the good engine. If 320/.83 is entered, the initial rate of descent will be higher exiting the track.




CHECKLIST DE UM 747 EM EMERGÊNCIA. (4 MOTORES)


B-747 OVERWATER ENGINE FAILURE Suggested sequence of events:



1. Continue to destination

    Continue para o destino.
2. 3 engine approach & landing no change from 4 engine approach.

    Aproximação e pouso com 03 motores é igual como se estivesse com 04.

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Atualmente milhares e milhares de vôos de longa distancia são operados sobre os oceanos.
Seja o ju­iz:

As companhias aérea ganham mais dinheiro ou os orgãos governamentais visem

mais segurança.