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An A320 low time PIC crosses cedes below the depicted altitude on the STAR after being cleared direct to archi for the visual to sfo, ca.
| Attributes | |
| ACN | 467380 |
| Time | |
| Date | 200003 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | intersection : cedes |
| State Reference | CA |
| Altitude | msl bound lower : 10500 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : o90.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : approach descent : intermediate altitude |
| Route In Use | approach : charted visual arrival star : modesto |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 15500 flight time type : 38 |
| ASRS Report | 467380 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : multi engine pilot : commercial |
| Events | |
| Anomaly | altitude deviation : crossing restriction not met altitude deviation : excursion from assigned altitude non adherence : published procedure non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance |
| Supplementary | |
| Problem Areas | Company Environmental Factor Flight Crew Human Performance ATC Human Performance Aircraft |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Approaching cedes, cleared to cross at 250 KTS and 11000 ft. Just prior to cedes, cleared direct archi for FMS bridge visual runway 28R. Began descent in automation to cross archi at or above 7000 ft. Contacted controller to verify altitude clearance, said 11000 ft, he noticed altitude approaching 10500 ft. Advised us to maintain 10000 ft and shortly thereafter cleared to 7000 ft for archi. New pilot on airbus, 2ND trip, 2ND time into sfo for this same approach. Knew this arrival keeps you 'high' all the way to the bridge. Correct method of this semi-RNAV/navigation approach was unclr. Determine now, should just stay in navigation for lateral guidance and use vertical speed for vertical profile with idle power and speed brake. (There are 2 vertical discontinuities on arrival in FMS on this procedure which preclude using full RNAV procedures.) as occurred previous week, autoplt disengaged at vertical 'too steep path' point just past archi. Bottom line -- clearance to other point does not relieve previous altitude restr, unless so stated by controller. We were also looking for preceding traffic called out by ATC.
Original NASA ASRS Text
Title: AN A320 LOW TIME PIC CROSSES CEDES BELOW THE DEPICTED ALT ON THE STAR AFTER BEING CLRED DIRECT TO ARCHI FOR THE VISUAL TO SFO, CA.
Narrative: APCHING CEDES, CLRED TO CROSS AT 250 KTS AND 11000 FT. JUST PRIOR TO CEDES, CLRED DIRECT ARCHI FOR FMS BRIDGE VISUAL RWY 28R. BEGAN DSCNT IN AUTOMATION TO CROSS ARCHI AT OR ABOVE 7000 FT. CONTACTED CTLR TO VERIFY ALT CLRNC, SAID 11000 FT, HE NOTICED ALT APCHING 10500 FT. ADVISED US TO MAINTAIN 10000 FT AND SHORTLY THEREAFTER CLRED TO 7000 FT FOR ARCHI. NEW PLT ON AIRBUS, 2ND TRIP, 2ND TIME INTO SFO FOR THIS SAME APCH. KNEW THIS ARR KEEPS YOU 'HIGH' ALL THE WAY TO THE BRIDGE. CORRECT METHOD OF THIS SEMI-RNAV/NAV APCH WAS UNCLR. DETERMINE NOW, SHOULD JUST STAY IN NAV FOR LATERAL GUIDANCE AND USE VERT SPD FOR VERT PROFILE WITH IDLE PWR AND SPD BRAKE. (THERE ARE 2 VERT DISCONTINUITIES ON ARR IN FMS ON THIS PROC WHICH PRECLUDE USING FULL RNAV PROCS.) AS OCCURRED PREVIOUS WK, AUTOPLT DISENGAGED AT VERT 'TOO STEEP PATH' POINT JUST PAST ARCHI. BOTTOM LINE -- CLRNC TO OTHER POINT DOES NOT RELIEVE PREVIOUS ALT RESTR, UNLESS SO STATED BY CTLR. WE WERE ALSO LOOKING FOR PRECEDING TFC CALLED OUT BY ATC.
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.