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ZLA controller described an airspace infraction when traffic issued a 'descend via' clearance descended below a crossing altitude on the procedure.
| Attributes | |
| ACN | 1040971 |
| Time | |
| Date | 201210 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | LAS.Airport |
| State Reference | NV |
| Aircraft 1 | |
| Make Model Name | A319 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Route In Use | STAR KEPEC |
| Flight Plan | IFR |
| Person 1 | |
| Function | Enroute |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | ATC Issue All Types Conflict NMAC Deviation - Procedural Clearance |
Narrative:
Advised pilot to 'descend via the KEPEC3 expect after clarr maintain 130'. He read it back correctly but descended below the misen crossing restriction; which is FL240. Another controller called me to let me know the low sector was open. When I noticed what he was talking about I questioned the pilot and he said he thought I gave him the descent clearance to 130. I checked the tapes and he read it back correctly. I normally do not give that clearance (descend via except) but I was in a briefing with the pilot's company and they said the pilots know what that clearance means. I will not give that clearance again.
Original NASA ASRS Text
Title: ZLA Controller described an airspace infraction when traffic issued a 'descend via' clearance descended below a crossing altitude on the procedure.
Narrative: Advised pilot to 'descend via the KEPEC3 expect after CLARR maintain 130'. He read it back correctly but descended below the MISEN crossing restriction; which is FL240. Another Controller called me to let me know the low sector was open. When I noticed what he was talking about I questioned the pilot and he said he thought I gave him the descent clearance to 130. I checked the tapes and he read it back correctly. I normally do not give that clearance (descend via except) but I was in a briefing with the pilot's company and they said the pilots know what that clearance means. I will not give that clearance again.
Data retrieved from NASA's ASRS site as of July 2013 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.