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Flight crew of medium large transport given VFR traffic 500' below. TCAS ii gave warning then RA climb. Flight crew climbed 400'. TCAS ii indicated solution at 800' separation. Flight crew advised controller regarding deviation.
| Attributes | |
| ACN | 169174 |
| Time | |
| Date | 199101 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : orf |
| State Reference | VA |
| Altitude | msl bound lower : 10000 msl bound upper : 10400 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : orf tower : day |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude cruise other descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : cfi pilot : commercial pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 110 flight time total : 6022 flight time type : 252 |
| ASRS Report | 169174 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Miss Distance | vertical : 800 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
TCAS ii was operative in aircraft. Approach control called traffic at 9500', 'an small aircraft VFR in your 12 O'clock.' the TCAS ii announced, 'traffic, traffic,' then 'climb, climb.' we never saw traffic after RA, so we followed TCAS ii instructions and climbed to 10400'. The TCAS ii announced, 'clear of traffic.' we returned to 1000' and notified ATC of our deviation from assigned altitude. No further events occurred.
Original NASA ASRS Text
Title: FLT CREW OF MLG GIVEN VFR TRAFFIC 500' BELOW. TCAS II GAVE WARNING THEN RA CLIMB. FLT CREW CLIMBED 400'. TCAS II INDICATED SOLUTION AT 800' SEPARATION. FLT CREW ADVISED CTLR REGARDING DEVIATION.
Narrative: TCAS II WAS OPERATIVE IN ACFT. APCH CTL CALLED TFC AT 9500', 'AN SMA VFR IN YOUR 12 O'CLOCK.' THE TCAS II ANNOUNCED, 'TFC, TFC,' THEN 'CLB, CLB.' WE NEVER SAW TFC AFTER RA, SO WE FOLLOWED TCAS II INSTRUCTIONS AND CLBED TO 10400'. THE TCAS II ANNOUNCED, 'CLR OF TFC.' WE RETURNED TO 1000' AND NOTIFIED ATC OF OUR DEVIATION FROM ASSIGNED ALT. NO FURTHER EVENTS OCCURRED.
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.