 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
An air carrier flight crew descends their aircraft when receiving a TCASII RA on small aircraft traffic in sight ahead, same direction, 500 ft higher southeast of pdz, ca.
| Attributes | |
| ACN | 448106 |
| Time | |
| Date | 199909 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : pdz.vor |
| State Reference | CA |
| Altitude | msl bound lower : 4500 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : sct.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other other vortac |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure sid : prado 5 enroute airway : ns.airway |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : sct.tracon |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Retractable Gear |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other vortac |
| Flight Phase | cruise : level |
| Route In Use | enroute airway : ns.airway |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi pilot : atp pilot : multi engine |
| Experience | flight time last 90 days : 150 flight time total : 5000 |
| ASRS Report | 448106 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne critical |
| Independent Detector | atc equipment other atc equipment : radar aircraft equipment : tcas other controllera other flight crewa other flight crewb |
| Resolutory Action | controller : issued advisory flight crew : took evasive action |
| Miss Distance | horizontal : 0 vertical : 500 |
| Supplementary | |
| Problem Areas | Airspace Structure Flight Crew Human Performance Aircraft |
| Primary Problem | Flight Crew Human Performance |
Narrative:
On departure out of ont on the prado 5 departure, we were given an altitude of 5000 ft MSL which we arrived at and maintained. Just past pdz, traffic was called out by approach at 5500 ft. As we approached the traffic, the TCASII called an RA and commanded a descent, which the PF obeyed. We descended approximately 500 ft to avoid the traffic (a low wing single engine aircraft). We returned to 5000 ft when clear of traffic and advised socal departure. It appeared to us that the other aircraft was not at 5500 ft as indicated by socal either due to equipment errors or due to the aircraft initiating a descent.
Original NASA ASRS Text
Title: AN ACR FLC DSNDS THEIR ACFT WHEN RECEIVING A TCASII RA ON SMA TFC IN SIGHT AHEAD, SAME DIRECTION, 500 FT HIGHER SE OF PDZ, CA.
Narrative: ON DEP OUT OF ONT ON THE PRADO 5 DEP, WE WERE GIVEN AN ALT OF 5000 FT MSL WHICH WE ARRIVED AT AND MAINTAINED. JUST PAST PDZ, TFC WAS CALLED OUT BY APCH AT 5500 FT. AS WE APCHED THE TFC, THE TCASII CALLED AN RA AND COMMANDED A DSCNT, WHICH THE PF OBEYED. WE DSNDED APPROX 500 FT TO AVOID THE TFC (A LOW WING SINGLE ENG ACFT). WE RETURNED TO 5000 FT WHEN CLR OF TFC AND ADVISED SOCAL DEP. IT APPEARED TO US THAT THE OTHER ACFT WAS NOT AT 5500 FT AS INDICATED BY SOCAL EITHER DUE TO EQUIP ERRORS OR DUE TO THE ACFT INITIATING A DSCNT.
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.