 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Potential conflict averted by flight crew response to TCASII RA as intruder aircraft Y is IMC in VFR flight. Altitude deviation altitude excursion.
| Attributes | |
| ACN | 232583 |
| Time | |
| Date | 199301 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : nas |
| State Reference | FO |
| Altitude | msl bound lower : 9000 msl bound upper : 9500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : nas artcc : ztl |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Small Transport |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 4000 flight time type : 2000 |
| ASRS Report | 232583 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude inflight encounter : vfr in imc non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 500 vertical : 1000 |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On arrival to nassau, approach stopped our descent at 9000 ft and reported light civil aircraft on climb out passing 8000 ft for 8500 ft. We were above a broken cloud layer of cumulus. We did not pick up aircraft visually but had target on TCASII. TCASII then gave a TA and then an RA with a climb command to plus 2000 FPM. As aircraft was not in sight, I complied with the RA with a climb as high as 9500 ft MSL. Captain picked out aircraft popping through clouds (on VFR flight plan). Aircraft passed by without conflict. Rest of flight normal.
Original NASA ASRS Text
Title: POTENTIAL CONFLICT AVERTED BY FLC RESPONSE TO TCASII RA AS INTRUDER ACFT Y IS IMC IN VFR FLT. ALTDEV ALT EXCURSION.
Narrative: ON ARR TO NASSAU, APCH STOPPED OUR DSCNT AT 9000 FT AND RPTED LIGHT CIVIL ACFT ON CLBOUT PASSING 8000 FT FOR 8500 FT. WE WERE ABOVE A BROKEN CLOUD LAYER OF CUMULUS. WE DID NOT PICK UP ACFT VISUALLY BUT HAD TARGET ON TCASII. TCASII THEN GAVE A TA AND THEN AN RA WITH A CLB COMMAND TO PLUS 2000 FPM. AS ACFT WAS NOT IN SIGHT, I COMPLIED WITH THE RA WITH A CLB AS HIGH AS 9500 FT MSL. CAPT PICKED OUT ACFT POPPING THROUGH CLOUDS (ON VFR FLT PLAN). ACFT PASSED BY WITHOUT CONFLICT. REST OF FLT NORMAL.
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.