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After being issued a clearance, 'via the skebr 1 arrival, except maintain 8000 ft,' an air carrier crew failed to comply with altitude restrs.
| Attributes | |
| ACN | 559048 |
| Time | |
| Date | 200208 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : l30.tracon |
| State Reference | NV |
| Altitude | msl bound lower : 8000 msl bound upper : 12000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : l30.tracon |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | descent : approach |
| Route In Use | arrival star : skebr |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 10 |
| ASRS Report | 559048 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain |
| Events | |
| Anomaly | altitude deviation : crossing restriction not met non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other controllera |
| Consequence | faa : investigated |
| Supplementary | |
| Problem Areas | Chart Or Publication Flight Crew Human Performance Airspace Structure ATC Human Performance |
| Primary Problem | Ambiguous |
Narrative:
Air carrier X, on skebr arrival, was issued 'descend via skebr 1 arrival except maintain 8000 ft.' the readback by air carrier X was correct. Air carrier X failed to comply with altitude restrs on the arrival. Air carrier X descended through 12000 ft to 8000 ft prior to ipumy. A quality assurance review was filed at L30 (las TRACON). Genot #1/500 north 7110.299 gives an example of the phraseology to be used. The genot also explains what is expected of the crew. This phraseology seems to be confusing the crews.
Original NASA ASRS Text
Title: AFTER BEING ISSUED A CLRNC, 'VIA THE SKEBR 1 ARR, EXCEPT MAINTAIN 8000 FT,' AN ACR CREW FAILED TO COMPLY WITH ALT RESTRS.
Narrative: ACR X, ON SKEBR ARR, WAS ISSUED 'DSND VIA SKEBR 1 ARR EXCEPT MAINTAIN 8000 FT.' THE READBACK BY ACR X WAS CORRECT. ACR X FAILED TO COMPLY WITH ALT RESTRS ON THE ARR. ACR X DSNDED THROUGH 12000 FT TO 8000 FT PRIOR TO IPUMY. A QUALITY ASSURANCE REVIEW WAS FILED AT L30 (LAS TRACON). GENOT #1/500 N 7110.299 GIVES AN EXAMPLE OF THE PHRASEOLOGY TO BE USED. THE GENOT ALSO EXPLAINS WHAT IS EXPECTED OF THE CREW. THIS PHRASEOLOGY SEEMS TO BE CONFUSING THE CREWS.
Data retrieved from NASA's ASRS site as of July 2007 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.