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Flight crew of an medium large transport air carrier aircraft took evasive action and climbed from assigned altitude in response to a TCASII RA during high altitude cruise.
| Attributes | |
| ACN | 248642 |
| Time | |
| Date | 199308 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : aml |
| State Reference | VA |
| Altitude | msl bound lower : 29000 msl bound upper : 30000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : corporate |
| Make Model Name | Light Transport |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 90 flight time total : 20000 flight time type : 90 |
| ASRS Report | 248642 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 15800 flight time type : 1400 |
| ASRS Report | 248506 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | vertical : 1000 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
TCASII showed traffic at our altitude closing rapidly from 3 O'clock position. TCASII advised climb. We left 29000 ft and climbed to 30000 ft. TCASII showed target going beneath us. After traffic was clear, we returned to 29000 ft. We notified ATC. The controller said an light transport was the traffic, but insisted that the light transport was at 28000 ft. We did not see traffic.
Original NASA ASRS Text
Title: FLC OF AN MLG ACR ACFT TOOK EVASIVE ACTION AND CLBED FROM ASSIGNED ALT IN RESPONSE TO A TCASII RA DURING HIGH ALT CRUISE.
Narrative: TCASII SHOWED TFC AT OUR ALT CLOSING RAPIDLY FROM 3 O'CLOCK POS. TCASII ADVISED CLB. WE LEFT 29000 FT AND CLBED TO 30000 FT. TCASII SHOWED TARGET GOING BENEATH US. AFTER TFC WAS CLR, WE RETURNED TO 29000 FT. WE NOTIFIED ATC. THE CTLR SAID AN LTT WAS THE TFC, BUT INSISTED THAT THE LTT WAS AT 28000 FT. WE DID NOT SEE TFC.
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.