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Air carrier X false target TCASII RA non adherence to ATC clearance failed to comply with crossing restriction.
| Attributes | |
| ACN | 235359 |
| Time | |
| Date | 199303 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : hdg |
| State Reference | CA |
| Altitude | msl bound lower : 10000 msl bound upper : 10000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ont |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller non radar : 7 controller radar : 5 controller supervisory : 1 |
| ASRS Report | 235359 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : crossing restriction not met conflict : airborne less severe non adherence : clearance |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Air carrier X was direct kayoh intersection at 10000 ft and instructed to cross kayoh at 8000 ft at 210 KTS. Air carrier X was approximately 8 NM northeast of kayoh. I advised air carrier X of 2 targets, 10 or 11 O'clock, 2 or 3 mi, nnwbound, at indicated altitudes of 4800 ft and 5600 ft. Air carrier X was looking for traffic when he initiated a climbing RA. Air carrier X climbed to 11000 ft and stated that TCASII showed target at 9600 ft. Air carrier Y, with TCASII, was 7 mi behind air carrier X. I called the same traffic to air carrier Y. He saw the traffic and stated it was 'way down below.' air carrier Y was at 10000 ft MSL. Air carrier X was unable to comply with the kayoh crossing restrictions, which are described procedures in the coast approach/ontario approach LOA. This may be another case of 'altitude jumping' as I've previously described in another ASRS report. I am about to distribute a survey in order to determine how widespread and frequent the 'altitude jumping' phenomena is.
Original NASA ASRS Text
Title: ACR X FALSE TARGET TCASII RA NON ADHERENCE TO ATC CLRNC FAILED TO COMPLY WITH XING RESTRICTION.
Narrative: ACR X WAS DIRECT KAYOH INTXN AT 10000 FT AND INSTRUCTED TO CROSS KAYOH AT 8000 FT AT 210 KTS. ACR X WAS APPROX 8 NM NE OF KAYOH. I ADVISED ACR X OF 2 TARGETS, 10 OR 11 O'CLOCK, 2 OR 3 MI, NNWBOUND, AT INDICATED ALTS OF 4800 FT AND 5600 FT. ACR X WAS LOOKING FOR TFC WHEN HE INITIATED A CLBING RA. ACR X CLBED TO 11000 FT AND STATED THAT TCASII SHOWED TARGET AT 9600 FT. ACR Y, WITH TCASII, WAS 7 MI BEHIND ACR X. I CALLED THE SAME TFC TO ACR Y. HE SAW THE TFC AND STATED IT WAS 'WAY DOWN BELOW.' ACR Y WAS AT 10000 FT MSL. ACR X WAS UNABLE TO COMPLY WITH THE KAYOH XING RESTRICTIONS, WHICH ARE DESCRIBED PROCS IN THE COAST APCH/ONTARIO APCH LOA. THIS MAY BE ANOTHER CASE OF 'ALT JUMPING' AS I'VE PREVIOUSLY DESCRIBED IN ANOTHER ASRS RPT. I AM ABOUT TO DISTRIBUTE A SURVEY IN ORDER TO DETERMINE HOW WIDESPREAD AND FREQUENT THE 'ALT JUMPING' PHENOMENA IS.
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.