 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Flight crew of an air carrier medium large transport failed to level off at the SID prescribed altitudes since they believed that they were cleared unrestr to a higher assigned altitude. ATC subsequently cleared them on since the two crossing restrs not met were well below.
| Attributes | |
| ACN | 385289 |
| Time | |
| Date | 199711 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : sjc |
| State Reference | CA |
| Altitude | msl bound lower : 12000 msl bound upper : 17000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : zoa tower : jnu |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| 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 : flight engineer pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 20000 flight time type : 15000 |
| ASRS Report | 385289 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 270 flight time total : 8000 flight time type : 3500 |
| ASRS Report | 385290 |
| Events | |
| Anomaly | altitude deviation : crossing restriction not met altitude deviation : overshoot non adherence : published procedure non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While departing sjc on the danville one departure in moderate rain and rainshowers, both my first officer and I believed we had been cleared to FL200. That altitude was set in the altitude alert window. Passing approximately 17000 ft center called and asked what altitude we were climbing to. We responded FL200. After a long pause the controller cleared us to FL200. I feel he wanted us to comply with the altitudes on the SID but we both thought we had been cleared unrestr to FL200. There was a lot of WX in the area and we were busy with flying the published SID and avoiding WX using WX radar. Supplemental information from acn 385290: he (controller) paused, and then asked if we crossed sjc at 12000 ft. We said 'no' because our last altitude clearance was to climb to FL200.
Original NASA ASRS Text
Title: FLC OF AN ACR MLG FAILED TO LEVEL OFF AT THE SID PRESCRIBED ALTS SINCE THEY BELIEVED THAT THEY WERE CLRED UNRESTR TO A HIGHER ASSIGNED ALT. ATC SUBSEQUENTLY CLRED THEM ON SINCE THE TWO XING RESTRS NOT MET WERE WELL BELOW.
Narrative: WHILE DEPARTING SJC ON THE DANVILLE ONE DEP IN MODERATE RAIN AND RAINSHOWERS, BOTH MY FO AND I BELIEVED WE HAD BEEN CLRED TO FL200. THAT ALT WAS SET IN THE ALT ALERT WINDOW. PASSING APPROX 17000 FT CTR CALLED AND ASKED WHAT ALT WE WERE CLBING TO. WE RESPONDED FL200. AFTER A LONG PAUSE THE CTLR CLRED US TO FL200. I FEEL HE WANTED US TO COMPLY WITH THE ALTS ON THE SID BUT WE BOTH THOUGHT WE HAD BEEN CLRED UNRESTR TO FL200. THERE WAS A LOT OF WX IN THE AREA AND WE WERE BUSY WITH FLYING THE PUBLISHED SID AND AVOIDING WX USING WX RADAR. SUPPLEMENTAL INFO FROM ACN 385290: HE (CTLR) PAUSED, AND THEN ASKED IF WE CROSSED SJC AT 12000 FT. WE SAID 'NO' BECAUSE OUR LAST ALT CLRNC WAS TO CLB TO FL200.
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.