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An air carrier crew descends below charted altitude on the husky visual approach to sea, wa. ATC controller notices and reminds them of the restr.
| Attributes | |
| ACN | 510631 |
| Time | |
| Date | 200105 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sea.airport |
| State Reference | WA |
| Altitude | msl single value : 5000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : s46.tracon tower : phl.tower |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer & glide slope : 16r other |
| Flight Phase | descent : approach |
| Route In Use | approach : charted visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time type : 715 |
| ASRS Report | 510631 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance non adherence : published procedure |
| Independent Detector | other controllerb |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Chart Or Publication |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were cleared the husky arrival to runway 16R. We started our descent abeam husky stadium to maintain a normal 3:1 descent profile. ATC advised us not to descend until reaching 13 DME from sea. The charted arrival does not adequately depict this as a 'hard' altitude restr. This is especially true, because if you are at 5000 ft at 13 DME, you are above a normal descent path.
Original NASA ASRS Text
Title: AN ACR CREW DSNDS BELOW CHARTED ALT ON THE HUSKY VISUAL APCH TO SEA, WA. ATC CTLR NOTICES AND REMINDS THEM OF THE RESTR.
Narrative: WE WERE CLRED THE HUSKY ARR TO RWY 16R. WE STARTED OUR DSCNT ABEAM HUSKY STADIUM TO MAINTAIN A NORMAL 3:1 DSCNT PROFILE. ATC ADVISED US NOT TO DSND UNTIL REACHING 13 DME FROM SEA. THE CHARTED ARR DOES NOT ADEQUATELY DEPICT THIS AS A 'HARD' ALT RESTR. THIS IS ESPECIALLY TRUE, BECAUSE IF YOU ARE AT 5000 FT AT 13 DME, YOU ARE ABOVE A NORMAL DSCNT PATH.
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.