 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Approach controller allows a cessna aircraft to penetrate class C airspace without coordination causing a conflict with a VFR BE90 aircraft in the traffic pattern. The local controller reporter claims that the approach controller did not comply with the LOA.
| Attributes | |
| ACN | 352208 |
| Time | |
| Date | 199611 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : smf |
| State Reference | CA |
| Altitude | msl bound lower : 1500 msl bound upper : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : smf |
| Operator | general aviation : personal |
| Make Model Name | King Air C90 E90 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | other |
| Flight Plan | VFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Fixed Gear |
| Flight Phase | descent other |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : non radar |
| Experience | controller military : 3 controller non radar : 3 flight time total : 150 |
| ASRS Report | 352208 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | non adherence : published procedure other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Deviation |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
Small transport X, BE90, was in smf VFR traffic pattern on left downwind to runway 16L at 1500 ft. The local controller observed a limited data block crossing the airport at 2000 ft MSL descending. Local controllers slew and enter on limited data block to obtain full data block. By smf ATCT/mcc TRACON LOA the TRACON is required to coordinate aircraft operations within class C surface area below 2500 ft west of runway 16L/34R centerline and below 2000 ft east of runway 16L/34R centerline. Nga Y was descending through 1500 ft without coordination. Nga Y was under control of mcc TRACON north feeder. The smf local controller issued traffic to small transport X on nga Y. Aircraft's radar targets merged with less than 500 ft vertical separation. Mcc TRACON does not have smf class C surface area depicted on radar video maps. No interfacility coordination was affected.
Original NASA ASRS Text
Title: APCH CTLR ALLOWS A CESSNA ACFT TO PENETRATE CLASS C AIRSPACE WITHOUT COORD CAUSING A CONFLICT WITH A VFR BE90 ACFT IN THE TFC PATTERN. THE LCL CTLR RPTR CLAIMS THAT THE APCH CTLR DID NOT COMPLY WITH THE LOA.
Narrative: SMT X, BE90, WAS IN SMF VFR TFC PATTERN ON L DOWNWIND TO RWY 16L AT 1500 FT. THE LCL CTLR OBSERVED A LIMITED DATA BLOCK XING THE ARPT AT 2000 FT MSL DSNDING. LCL CTLRS SLEW AND ENTER ON LIMITED DATA BLOCK TO OBTAIN FULL DATA BLOCK. BY SMF ATCT/MCC TRACON LOA THE TRACON IS REQUIRED TO COORDINATE ACFT OPS WITHIN CLASS C SURFACE AREA BELOW 2500 FT W OF RWY 16L/34R CTRLINE AND BELOW 2000 FT E OF RWY 16L/34R CTRLINE. NGA Y WAS DSNDING THROUGH 1500 FT WITHOUT COORD. NGA Y WAS UNDER CTL OF MCC TRACON N FEEDER. THE SMF LCL CTLR ISSUED TFC TO SMT X ON NGA Y. ACFT'S RADAR TARGETS MERGED WITH LESS THAN 500 FT VERT SEPARATION. MCC TRACON DOES NOT HAVE SMF CLASS C SURFACE AREA DEPICTED ON RADAR VIDEO MAPS. NO INTERFAC COORD WAS AFFECTED.
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.