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Flight crew of a B737-300 stopped arrival descent and climbed in response to a TCASII RA and then made an evasive action turn to avoid a cessna citation observed coming at them and also making an evasive action turn. ARTCC controller issued a TA.
| Attributes | |
| ACN | 451896 |
| Time | |
| Date | 199910 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | intersection : nesto |
| State Reference | PA |
| Altitude | msl single value : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob.artcc tower : iad.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other other vortac |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival : profile descent |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zob.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Cessna Citation Undifferentiated or Other Model |
| Navigation In Use | other vortac |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure : vfr |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 16000 flight time type : 8500 |
| ASRS Report | 451896 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 11000 flight time type : 6500 |
| ASRS Report | 451678 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne critical other anomaly other |
| Independent Detector | aircraft equipment : tcas other flight crewa other flight crewb |
| Resolutory Action | controller : issued advisory flight crew : took evasive action |
| Miss Distance | horizontal : 3000 vertical : 200 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
Descending to cross nesto intersection at 10000 ft a target popped up on 10 NM range on TCASII. First officer asked ZOB about traffic and he replied 'citation, climbing to 11500 ft VFR.' this was followed by a TA and TCASII followed by an RA, 'climb, climb, climb.' I disconnected autoplt and initiated a climb (was like I stopped the descent). The first officer stated 'I have the traffic.' as I queried her where it was I saw the citation at 12 O'clock position in a right bank evasive maneuver. I also banked right. Estimate 1/2 NM separation and citation was either at my altitude or slightly higher. I was on a VNAV profile descent and was on profile. Upon landing I called the area engineering safety office and asked for his advice. He set up a conference call to ZOB and we talked with operations manager. He assured me a quality assurance review would take place.
Original NASA ASRS Text
Title: FLC OF A B737-300 STOPPED ARR DSCNT AND CLBED IN RESPONSE TO A TCASII RA AND THEN MADE AN EVASIVE ACTION TURN TO AVOID A CESSNA CITATION OBSERVED COMING AT THEM AND ALSO MAKING AN EVASIVE ACTION TURN. ARTCC CTLR ISSUED A TA.
Narrative: DSNDING TO CROSS NESTO INTXN AT 10000 FT A TARGET POPPED UP ON 10 NM RANGE ON TCASII. FO ASKED ZOB ABOUT TFC AND HE REPLIED 'CITATION, CLBING TO 11500 FT VFR.' THIS WAS FOLLOWED BY A TA AND TCASII FOLLOWED BY AN RA, 'CLB, CLB, CLB.' I DISCONNECTED AUTOPLT AND INITIATED A CLB (WAS LIKE I STOPPED THE DSCNT). THE FO STATED 'I HAVE THE TFC.' AS I QUERIED HER WHERE IT WAS I SAW THE CITATION AT 12 O'CLOCK POS IN A R BANK EVASIVE MANEUVER. I ALSO BANKED R. ESTIMATE 1/2 NM SEPARATION AND CITATION WAS EITHER AT MY ALT OR SLIGHTLY HIGHER. I WAS ON A VNAV PROFILE DSCNT AND WAS ON PROFILE. UPON LNDG I CALLED THE AREA ENGINEERING SAFETY OFFICE AND ASKED FOR HIS ADVICE. HE SET UP A CONFERENCE CALL TO ZOB AND WE TALKED WITH OPS MGR. HE ASSURED ME A QUALITY ASSURANCE REVIEW WOULD TAKE PLACE.
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.