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Mode C showed air carrier high over intersection on arrival route while pilot reporter maintains that he was at the assigned altitude.
| Attributes | |
| ACN | 140501 |
| Time | |
| Date | 199003 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : pmd airport : bur |
| State Reference | CA |
| Altitude | msl bound lower : 8000 msl bound upper : 9000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : edw artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 180 flight time total : 10000 flight time type : 550 |
| ASRS Report | 140501 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : undershoot altitude deviation : crossing restriction not met non adherence : clearance other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
On descent into bur while on published arrival we were cleared to cross janny and maintain 8000', which we did, even after radar vectors off the published route. Edwards approach was upset because they showed us 1 mi east of janny at 8600' and bur approach had us a mi west at 9000'. We showed arriving at janny at 8000'. After the landing I gave edwards approach a call and talked to the shift supervisor. The concern here is that a victor arwy crossed the arrival at janny and there is a lot of 9000' traffic on that route. Since these arwys are 4 mi wide there is somewhat of a traffic conflict there. Most of this is due to definitions, i.e., intxns are a point in space and victor arwys have width. To be safe here one should be level at 8000' at least 2 mi early. The supervisor also said (company and company) fmo airplanes were a real problem here.
Original NASA ASRS Text
Title: MODE C SHOWED ACR HIGH OVER INTERSECTION ON ARR ROUTE WHILE PLT REPORTER MAINTAINS THAT HE WAS AT THE ASSIGNED ALT.
Narrative: ON DSCNT INTO BUR WHILE ON PUBLISHED ARR WE WERE CLRED TO CROSS JANNY AND MAINTAIN 8000', WHICH WE DID, EVEN AFTER RADAR VECTORS OFF THE PUBLISHED RTE. EDWARDS APCH WAS UPSET BECAUSE THEY SHOWED US 1 MI E OF JANNY AT 8600' AND BUR APCH HAD US A MI W AT 9000'. WE SHOWED ARRIVING AT JANNY AT 8000'. AFTER THE LNDG I GAVE EDWARDS APCH A CALL AND TALKED TO THE SHIFT SUPVR. THE CONCERN HERE IS THAT A VICTOR ARWY CROSSED THE ARR AT JANNY AND THERE IS A LOT OF 9000' TFC ON THAT RTE. SINCE THESE ARWYS ARE 4 MI WIDE THERE IS SOMEWHAT OF A TFC CONFLICT THERE. MOST OF THIS IS DUE TO DEFINITIONS, I.E., INTXNS ARE A POINT IN SPACE AND VICTOR ARWYS HAVE WIDTH. TO BE SAFE HERE ONE SHOULD BE LEVEL AT 8000' AT LEAST 2 MI EARLY. THE SUPVR ALSO SAID (COMPANY AND COMPANY) FMO AIRPLANES WERE A REAL PROB HERE.
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.