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A B757 first officer descends out of his assigned altitude when the flight receives a TCASII RA for descending, opposite direction traffic leveling 1000 ft above them during a high rate of descent procedure near mci, mo.
| Attributes | |
| ACN | 508970 |
| Time | |
| Date | 200104 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | navaid : mci.vortac |
| State Reference | MO |
| Altitude | msl bound lower : 27700 msl bound upper : 28000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Flight Phase | cruise : level descent : approach descent : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zkc.artcc |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | descent : intermediate altitude descent : holding |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 10000 flight time type : 700 |
| ASRS Report | 508970 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude |
| Resolutory Action | flight crew : returned to assigned altitude |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Airspace Structure ATC Human Performance |
| Primary Problem | Ambiguous |
Narrative:
Cruising at FL280, received TA followed by 'descend, descend' RA. Disengaged autoplt and descended to FL277 and received 'monitor vertical speed.' returned to assigned altitude and advised ATC was aware of descending traffic at our 11 O'clock position, cleared to FL290. Aircraft did level off at FL290. Apparently, TCASII did not like his rate of descent.
Original NASA ASRS Text
Title: A B757 FO DSNDS OUT OF HIS ASSIGNED ALT WHEN THE FLT RECEIVES A TCASII RA FOR DSNDING, OPPOSITE DIRECTION TFC LEVELING 1000 FT ABOVE THEM DURING A HIGH RATE OF DSCNT PROC NEAR MCI, MO.
Narrative: CRUISING AT FL280, RECEIVED TA FOLLOWED BY 'DSND, DSND' RA. DISENGAGED AUTOPLT AND DSNDED TO FL277 AND RECEIVED 'MONITOR VERT SPD.' RETURNED TO ASSIGNED ALT AND ADVISED ATC WAS AWARE OF DSNDING TFC AT OUR 11 O'CLOCK POS, CLRED TO FL290. ACFT DID LEVEL OFF AT FL290. APPARENTLY, TCASII DID NOT LIKE HIS RATE OF DSCNT.
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.