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A B737-700 flight crew departs their assigned altitude when TCASII RA commands a climb. Crew and ATC realize it is in conflict with traffic 1000 ft above.
| Attributes | |
| ACN | 391560 |
| Time | |
| Date | 199801 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : osi airport : oak |
| State Reference | CA |
| Altitude | msl bound lower : 10000 msl bound upper : 10500 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : oak |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Route In Use | departure other departure sid : sid enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain instruction : trainee |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 17000 flight time type : 14000 |
| ASRS Report | 391560 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer observation : company check pilot oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 15700 flight time type : 12000 |
| ASRS Report | 391561 |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance non adherence : required legal separation other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa |
| Resolutory Action | aircraft : equipment problem dissipated flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Miss Distance | horizontal : 9000 vertical : 500 |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
I was the left seat pilot at the controls of flight, a B737-700 training flight departing oak for the pmd area. Check airman (PIC) was in the right seat. We had just leveled at 10000 ft (assigned) when we received a TCASII RA instructing us to 'climb, climb.' we began the commanded climb and immediately realized an aircraft was above us (I believe at 11000 ft). Bay approach queried us, and after leveling at 10500 ft we descended back to our previously assigned altitude. Further TCASII displays were normal for the flight.
Original NASA ASRS Text
Title: A B737-700 FLC DEPARTS THEIR ASSIGNED ALT WHEN TCASII RA COMMANDS A CLB. CREW AND ATC REALIZE IT IS IN CONFLICT WITH TFC 1000 FT ABOVE.
Narrative: I WAS THE L SEAT PLT AT THE CTLS OF FLT, A B737-700 TRAINING FLT DEPARTING OAK FOR THE PMD AREA. CHK AIRMAN (PIC) WAS IN THE R SEAT. WE HAD JUST LEVELED AT 10000 FT (ASSIGNED) WHEN WE RECEIVED A TCASII RA INSTRUCTING US TO 'CLB, CLB.' WE BEGAN THE COMMANDED CLB AND IMMEDIATELY REALIZED AN ACFT WAS ABOVE US (I BELIEVE AT 11000 FT). BAY APCH QUERIED US, AND AFTER LEVELING AT 10500 FT WE DSNDED BACK TO OUR PREVIOUSLY ASSIGNED ALT. FURTHER TCASII DISPLAYS WERE NORMAL FOR THE FLT.
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.