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SR 111 Investigation Report

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1.9.3  Transition Procedures and Controller Communications

The usual transition procedure for an aircraft in high-level airspace inbound to Halifax is to transition from a high-level en route air traffic controller to a low-level airspace controller, and then to a third controller responsible for traffic within the Halifax terminal control area. The airspace is controlled by the Moncton ACC, located in Riverview, New Brunswick. In this instance, the high-level en route controller coordinated with both the low-level controller and the Halifax terminal controller to reduce the number of RF changes required and to help expedite the descent. At 0118:16, the high-level en route controller instructed SR 111 to contact the Halifax terminal controller on frequency 119.2 MHz. Moncton ACC allocated one controller, with exclusive use of frequency 119.2 MHz, to meet the communications needs of SR 111 on approach to Halifax.

A detailed comparison was made between the transcript of the ATC transmissions and the recommended phraseology in the Nav Canada ATC MANOPS. Although there were occasional instances of minor omissions or substitutions, there was no indication that any of the advisories, clearances, or requests made by ATC were misunderstood or missed by the crew of SR 111. Similarly, the transmissions by the pilots of SR 111 were consistent with accepted industry standards and practices.

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Updated: 2003-03-27

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Important Notices