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Psc controller vectors DHC8 off course due to opposite direction atx PA34 who has climbed from assigned altitude due to alternator problems.
| Attributes | |
| ACN | 501808 |
| Time | |
| Date | 200102 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : psc.vor |
| State Reference | WA |
| Altitude | msl bound lower : 6000 msl bound upper : 6500 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : psc.tracon |
| Operator | common carrier : air taxi |
| Make Model Name | PA-34-200 Seneca I |
| Operating Under FAR Part | Part 135 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : psc.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Dash 8 Series Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 11 controller time certified in position1 : 11 |
| ASRS Report | 501808 |
| Person 2 | |
| Affiliation | company : air taxi |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : critical altitude deviation : excursion from assigned altitude conflict : airborne less severe inflight encounter : weather non adherence : clearance |
| Independent Detector | atc equipment other atc equipment : radar other controllera |
| Resolutory Action | controller : issued new clearance controller : issued advisory flight crew : returned to original clearance flight crew : returned to assigned altitude |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 21000 vertical : 50 |
| Supplementary | |
| Problem Areas | Weather Flight Crew Human Performance Aircraft |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Aircraft #1 was wbound on an airway at 6000 ft, aircraft #2 was heading 115 degrees at 7000 ft. I noticed aircraft #1 had climbed to 6500 ft and assigned 6000 ft again, there was no response, I turned aircraft #2 left heading 030 degrees. The aircraft passed each other approximately 3.5 mi lateral and 500 ft vertical. The pilot of aircraft #1 told us later that he just got the aircraft the day before and that he had lost the left engine's alternator. After messing around with the alternators, he noticed his altimeter was at 6500 ft.
Original NASA ASRS Text
Title: PSC CTLR VECTORS DHC8 OFF COURSE DUE TO OPPOSITE DIRECTION ATX PA34 WHO HAS CLBED FROM ASSIGNED ALT DUE TO ALTERNATOR PROBS.
Narrative: ACFT #1 WAS WBOUND ON AN AIRWAY AT 6000 FT, ACFT #2 WAS HDG 115 DEGS AT 7000 FT. I NOTICED ACFT #1 HAD CLBED TO 6500 FT AND ASSIGNED 6000 FT AGAIN, THERE WAS NO RESPONSE, I TURNED ACFT #2 L HDG 030 DEGS. THE ACFT PASSED EACH OTHER APPROX 3.5 MI LATERAL AND 500 FT VERT. THE PLT OF ACFT #1 TOLD US LATER THAT HE JUST GOT THE ACFT THE DAY BEFORE AND THAT HE HAD LOST THE L ENG'S ALTERNATOR. AFTER MESSING AROUND WITH THE ALTERNATORS, HE NOTICED HIS ALTIMETER WAS AT 6500 FT.
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.