 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Flight crew of an medium large transport air carrier aircraft stopped descending and climbed in response to a TCASII RA.
| Attributes | |
| ACN | 260653 |
| Time | |
| Date | 199401 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : sjc |
| State Reference | CA |
| Altitude | msl bound lower : 5400 msl bound upper : 6200 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : oak |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | cruise other |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 8500 flight time type : 1500 |
| ASRS Report | 260653 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe 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 | horizontal : 6000 vertical : 100 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On descent into sjc, we were cleared to cross klide at 5000 ft MSL, then for the ILS to runway 30L at sjc. ATC had called out several VFR targets in the immediate area. We visually acquired several but not the one that caused the RA. At 2 DME before klide and as we descended to 5400 ft, we received the 'climb' RA. I looked down at the TCASII scope and saw a red square within 1 NM with a minus 3. I instructed the copilot to follow the RA. We immediately added power and climbed to 6200 ft MSL before got a 'clear of conflict.' we informed ATC and continued our approach into sjc. We never visually acquired the RA target. There are many small airports in the area. Normally there are no conflicts. What is someone doing, flying VFR at an ILS intersection?
Original NASA ASRS Text
Title: FLC OF AN MLG ACR ACFT STOPPED DSNDING AND CLBED IN RESPONSE TO A TCASII RA.
Narrative: ON DSCNT INTO SJC, WE WERE CLRED TO CROSS KLIDE AT 5000 FT MSL, THEN FOR THE ILS TO RWY 30L AT SJC. ATC HAD CALLED OUT SEVERAL VFR TARGETS IN THE IMMEDIATE AREA. WE VISUALLY ACQUIRED SEVERAL BUT NOT THE ONE THAT CAUSED THE RA. AT 2 DME BEFORE KLIDE AND AS WE DSNDED TO 5400 FT, WE RECEIVED THE 'CLB' RA. I LOOKED DOWN AT THE TCASII SCOPE AND SAW A RED SQUARE WITHIN 1 NM WITH A MINUS 3. I INSTRUCTED THE COPLT TO FOLLOW THE RA. WE IMMEDIATELY ADDED PWR AND CLBED TO 6200 FT MSL BEFORE GOT A 'CLR OF CONFLICT.' WE INFORMED ATC AND CONTINUED OUR APCH INTO SJC. WE NEVER VISUALLY ACQUIRED THE RA TARGET. THERE ARE MANY SMALL ARPTS IN THE AREA. NORMALLY THERE ARE NO CONFLICTS. WHAT IS SOMEONE DOING, FLYING VFR AT AN ILS INTXN?
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.