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O90 controller attempts to initiate a climb restr on departing B737 when recognizing procedural separation problem with PA28 on VOR approach to pao.
| Attributes | |
| ACN | 460544 |
| Time | |
| Date | 200001 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sjc.airport |
| State Reference | CA |
| Altitude | msl single value : 3000 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : o90.tracon tower : sjc.tower |
| Operator | general aviation : personal |
| Make Model Name | PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other vortac |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument non precision |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : sjc.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | climbout : takeoff climbout : initial |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : radar |
| Experience | controller limited radar : 2 controller military : 3 controller radar : 2 controller supervisory : 2 controller time certified in position1 : 1.66 |
| ASRS Report | 460544 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | other controllera other controllerb other other : 3 |
| Resolutory Action | controller : issued new clearance |
| Miss Distance | vertical : 1000 |
| Supplementary | |
| Problem Areas | ATC Human Performance Airspace Structure |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Inter Facility Coordination Failure Operational Error |
Narrative:
PA28 was on a VOR approach to pao, crossing the sjc VOR at 3000 ft. B737 was cleared for takeoff climbing to 5000 ft. Departure advised 'stop the B737 at 2000 ft.' as B737 climbed out, controller advised aircraft to 'maintain 2000 ft.' no response from B737. Controller again advised 'maintain 2000 ft.' still no response. The position had gone dead. Controller turned to ground control and said 'stop B737 at 2000 ft.' ground control keyed up local on his position and advised 'maintain 2000 ft.' again no response. Ground control again and more urgently advised 'maintain 2000 ft !' pilot finally responded. Local control position returned to normal by itself. The VOR approach into pao is unsafe and this is exactly why.
Original NASA ASRS Text
Title: O90 CTLR ATTEMPTS TO INITIATE A CLB RESTR ON DEPARTING B737 WHEN RECOGNIZING PROCEDURAL SEPARATION PROB WITH PA28 ON VOR APCH TO PAO.
Narrative: PA28 WAS ON A VOR APCH TO PAO, XING THE SJC VOR AT 3000 FT. B737 WAS CLRED FOR TKOF CLBING TO 5000 FT. DEP ADVISED 'STOP THE B737 AT 2000 FT.' AS B737 CLBED OUT, CTLR ADVISED ACFT TO 'MAINTAIN 2000 FT.' NO RESPONSE FROM B737. CTLR AGAIN ADVISED 'MAINTAIN 2000 FT.' STILL NO RESPONSE. THE POS HAD GONE DEAD. CTLR TURNED TO GND CTL AND SAID 'STOP B737 AT 2000 FT.' GND CTL KEYED UP LCL ON HIS POS AND ADVISED 'MAINTAIN 2000 FT.' AGAIN NO RESPONSE. GND CTL AGAIN AND MORE URGENTLY ADVISED 'MAINTAIN 2000 FT !' PLT FINALLY RESPONDED. LCL CTL POS RETURNED TO NORMAL BY ITSELF. THE VOR APCH INTO PAO IS UNSAFE AND THIS IS EXACTLY WHY.
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.