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Flight crew of an large transport air carrier aircraft overshot climb intermediate altitude in response to a TCASII RA resulting in ATC intervention to protect crossing traffic above.
| Attributes | |
| ACN | 258435 |
| Time | |
| Date | 199312 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sea |
| State Reference | WA |
| Altitude | msl bound lower : 9000 msl bound upper : 9300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : sea tracon : csg |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| 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 : atp pilot : flight engineer |
| Experience | flight time last 90 days : 160 flight time total : 14000 flight time type : 400 |
| ASRS Report | 258435 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 700 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Climbing out of sea on the mountain 3 departure with an assigned level off altitude of 9000. At approximately 8500 TCASII detected a target directly on the nose with a reading of 002. This being interpreted as a target dead ahead and 200 ft above. Both pilots became momentarily distracted looking outside. We shortly realized that the target was no threat as we were reading absolute altitude, not relative, but then realized we were climbing through 9000 with crossing traffic at 10000. ATC immediately alerted us to descend to 9000, but by then we were already descending out of 9300.
Original NASA ASRS Text
Title: FLC OF AN LGT ACR ACFT OVERSHOT CLB INTERMEDIATE ALT IN RESPONSE TO A TCASII RA RESULTING IN ATC INTERVENTION TO PROTECT XING TFC ABOVE.
Narrative: CLBING OUT OF SEA ON THE MOUNTAIN 3 DEP WITH AN ASSIGNED LEVEL OFF ALT OF 9000. AT APPROX 8500 TCASII DETECTED A TARGET DIRECTLY ON THE NOSE WITH A READING OF 002. THIS BEING INTERPRETED AS A TARGET DEAD AHEAD AND 200 FT ABOVE. BOTH PLTS BECAME MOMENTARILY DISTRACTED LOOKING OUTSIDE. WE SHORTLY REALIZED THAT THE TARGET WAS NO THREAT AS WE WERE READING ABSOLUTE ALT, NOT RELATIVE, BUT THEN REALIZED WE WERE CLBING THROUGH 9000 WITH XING TFC AT 10000. ATC IMMEDIATELY ALERTED US TO DSND TO 9000, BUT BY THEN WE WERE ALREADY DSNDING OUT OF 9300.
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.