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Uberlingen: Bashkirian 2937 and DHL 611

Printed page 5. PDF page 7.

continued to do so even after TCAS advised them to climb. This manoeuvre was performed contrary to the generated TCAS RA. The following systemic causes have been identified: � The integration of ACAS/TCAS II into the system aviation was insufficient
Open final report at PDF page 7BFU AX001-1-2/02: collision near Ueberlingen

Uberlingen: Bashkirian 2937 and DHL 611

Printed page 51. PDF page 53.

equipment, as will best avert collision". Annex 10 (Attachment A, paragraph 3.5.8.10.3 "Contrary pilot response. Manoeuvres opposite to sense of an RA may result in a reduction in vertical separation with the threat aircraft and therefore must be avoided. This
Open final report at PDF page 53BFU AX001-1-2/02: collision near Ueberlingen

Uberlingen: Bashkirian 2937 and DHL 611

Printed page 53. PDF page 55.

Traffic Control separation service. � ........... � If a TCAS 2000 RA requires manoeuvring contrary to an ATC clearance, satisfy the RA in a way that most nearly complies with the ATC clearance. If it is possible to both respond
Open final report at PDF page 55BFU AX001-1-2/02: collision near Ueberlingen

Uberlingen: Bashkirian 2937 and DHL 611

Printed page 55. PDF page 57.

Resolution Advisory, a controller should not issue instructions to that aircraft which are contrary to the Resolution Advisory as communicated by the pilot. [...] 4. Radiotelephony Reporting Procedures 4.1 The ICAO provisions published already approved do not yet address the
Open final report at PDF page 57BFU AX001-1-2/02: collision near Ueberlingen

Uberlingen: Bashkirian 2937 and DHL 611

Printed page 62. PDF page 64.

to be paid to the fact that the manoeuvre should never be performed in a di- rection contrary to the RA. The RA should be disregarded only if the potential conflicting traffic has been positively identi- fied and if it
Open final report at PDF page 64BFU AX001-1-2/02: collision near Ueberlingen

Uberlingen: Bashkirian 2937 and DHL 611

Printed page 63. PDF page 65.

flights. The remarks concerning RAs in the manual end with the statement: maneuvering contrary to an RA is not recommended since TCAS may be coordinating maneuvers with other airplanes. Flight Crew Training Prior to working for the operator both flight
Open final report at PDF page 65BFU AX001-1-2/02: collision near Ueberlingen