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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Medium large transport aircraft on SID with crossing restr. Both flight crew claim they crossed the fix at required altitude and then commenced climb in accordance with clearance. Controller intervened and apparently thought they had not made restr. Reporter's scenarios differ as to problem with altitude over pom.
| Attributes | |
| ACN | 381890 |
| Time | |
| Date | 199710 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : pom airport : ont |
| State Reference | CA |
| Altitude | msl bound lower : 8000 msl bound upper : 9000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : lax |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude cruise other |
| Route In Use | departure other departure sid : sid |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 7000 flight time type : 4000 |
| ASRS Report | 381890 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 300 flight time total : 6000 flight time type : 2500 |
| ASRS Report | 382723 |
| Events | |
| Anomaly | altitude deviation : crossing restriction not met non adherence : clearance non adherence : published procedure other anomaly other |
| Independent Detector | atc equipment other atc equipment : unspecified other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
Clearance delivery ont international cleared us pom 6 daggett transition to 14000 ft. On departure, passing over pom VOR, passing 8000 ft for climb to 14000 ft, socal advised us to stop at 9000 ft as we were passing through 9000 ft. Then said our crossing restr was 8000 ft. Our instruments showed us already over pom VOR. There seemed to be a conflict between our instruments and socal radar screen. Supplemental information from acn 382723: leveled at 8000 ft about 2 DME prior to VOR with multiple TCASII alerts, one at 9:30-10 O'clock within 500 ft about 2-3 mi and another crossing left to right about 3-5 mi climbing through 9000 ft. We remained level at 8000 ft trying to get visual contact on traffic. At about 3.5 DME on other side of pom VOR, socal asked us if we were instructed to remain at 8000 ft and seemed aggravated, at which time we continued climbing to 14000 ft.
Original NASA ASRS Text
Title: MLG ACFT ON SID WITH XING RESTR. BOTH FLC CLAIM THEY CROSSED THE FIX AT REQUIRED ALT AND THEN COMMENCED CLB IN ACCORDANCE WITH CLRNC. CTLR INTERVENED AND APPARENTLY THOUGHT THEY HAD NOT MADE RESTR. RPTR'S SCENARIOS DIFFER AS TO PROB WITH ALT OVER POM.
Narrative: CLRNC DELIVERY ONT INTL CLRED US POM 6 DAGGETT TRANSITION TO 14000 FT. ON DEP, PASSING OVER POM VOR, PASSING 8000 FT FOR CLB TO 14000 FT, SOCAL ADVISED US TO STOP AT 9000 FT AS WE WERE PASSING THROUGH 9000 FT. THEN SAID OUR XING RESTR WAS 8000 FT. OUR INSTS SHOWED US ALREADY OVER POM VOR. THERE SEEMED TO BE A CONFLICT BTWN OUR INSTS AND SOCAL RADAR SCREEN. SUPPLEMENTAL INFO FROM ACN 382723: LEVELED AT 8000 FT ABOUT 2 DME PRIOR TO VOR WITH MULTIPLE TCASII ALERTS, ONE AT 9:30-10 O'CLOCK WITHIN 500 FT ABOUT 2-3 MI AND ANOTHER XING L TO R ABOUT 3-5 MI CLBING THROUGH 9000 FT. WE REMAINED LEVEL AT 8000 FT TRYING TO GET VISUAL CONTACT ON TFC. AT ABOUT 3.5 DME ON OTHER SIDE OF POM VOR, SOCAL ASKED US IF WE WERE INSTRUCTED TO REMAIN AT 8000 FT AND SEEMED AGGRAVATED, AT WHICH TIME WE CONTINUED CLBING TO 14000 FT.
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.