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Small aircraft didn't follow ATC instruction and got close to another aircraft on approach, also left frequency without clearance.
| Attributes | |
| ACN | 171505 |
| Time | |
| Date | 199102 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : pwt |
| State Reference | WA |
| Altitude | msl bound lower : 2000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : sea artcc : zbw |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Fixed Gear |
| Flight Phase | descent : approach |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Small Aircraft |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 17 |
| ASRS Report | 171505 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument |
| Events | |
| Anomaly | non adherence : clearance non adherence : published procedure |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Miss Distance | horizontal : 6000 vertical : 1000 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Small aircraft X aircraft being vectored for NDB 01 approach. Small aircraft Y aircraft on full procedure NDB 01 approach. Small aircraft Y aircraft told to maintain 3000' MSL until procedure turn inbound and issued opp direction traffic, but small aircraft Y aircraft did not acknowledge traffic. Small aircraft Y aircraft made very short approach, unusual procedure turn, and was not on frequency. Small aircraft Y aircraft turned in 1 mi behind small aircraft X aircraft. Attempted to contact both aircraft by various means and another aircraft.
Original NASA ASRS Text
Title: SMA DIDN'T FOLLOW ATC INSTRUCTION AND GOT CLOSE TO ANOTHER ACFT ON APCH, ALSO LEFT FREQ WITHOUT CLRNC.
Narrative: SMA X ACFT BEING VECTORED FOR NDB 01 APCH. SMA Y ACFT ON FULL PROC NDB 01 APCH. SMA Y ACFT TOLD TO MAINTAIN 3000' MSL UNTIL PROC TURN INBND AND ISSUED OPP DIRECTION TFC, BUT SMA Y ACFT DID NOT ACKNOWLEDGE TFC. SMA Y ACFT MADE VERY SHORT APCH, UNUSUAL PROC TURN, AND WAS NOT ON FREQ. SMA Y ACFT TURNED IN 1 MI BEHIND SMA X ACFT. ATTEMPTED TO CONTACT BOTH ACFT BY VARIOUS MEANS AND ANOTHER ACFT.
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.