Narrative:

I was training on the r-side at sector 25/28 when my trainer and I observed aircraft X off course. I immediately took action to correct this route of flight and get him going in the right direction. When we asked him; he said he originally filed wages...flw.TANDY3.sna; however; he was rerouted via the OFFSHORE7 sxc transition. Once he acknowledged the route he had been given; he asked; 'did we screw that up?' we took down the aircraft information and forwarded it to our flm. This problem seems to be happening on an ever-increasing basis with no one carrier flying the route improperly more frequently than another as far as I have seen. I would recommend an investigation into what the reason for the FMS's of certain aircraft (assuming that's the problem) are taking these aircraft off course in the same general type of deviation to the east of course. As I mentioned; no aircraft type or company seems to be more frequently deviating than the other. My only other thought would be that the way the pilots receive their clearances may be confusing or proper confirmation of receipt is not obtained.

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Original NASA ASRS Text

Title: ZLA instructor and Developmental report of incorrect routing not particular to one airline or aircraft type they are seeing more often.

Narrative: I was training on the R-side at sector 25/28 when my trainer and I observed Aircraft X off course. I immediately took action to correct this route of flight and get him going in the right direction. When we asked him; he said he originally filed WAGES...FLW.TANDY3.SNA; however; he was rerouted via the OFFSHORE7 SXC transition. Once he acknowledged the route he had been given; he asked; 'Did we screw that up?' We took down the aircraft information and forwarded it to our FLM. This problem seems to be happening on an ever-increasing basis with no one carrier flying the route improperly more frequently than another as far as I have seen. I would recommend an investigation into what the reason for the FMS's of certain aircraft (assuming that's the problem) are taking these aircraft off course in the same general type of deviation to the east of course. As I mentioned; no aircraft type or company seems to be more frequently deviating than the other. My only other thought would be that the way the pilots receive their clearances may be confusing or proper confirmation of receipt is not obtained.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.