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Unauthorized penetration of control zone by small aircraft which had cancelled IFR to neighboring airport and requested a SVFR to destination.
| Attributes | |
| ACN | 131547 |
| Time | |
| Date | 198912 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : pdx airport : ttd |
| State Reference | OR |
| Altitude | msl bound lower : 1000 msl bound upper : 1000 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : pdx |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Retractable Gear |
| Flight Phase | cruise other cruise other cruise other |
| Route In Use | approach : svfr arrival other |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent : approach |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument pilot : private |
| Experience | flight time last 90 days : 40 flight time total : 1300 flight time type : 500 |
| ASRS Report | 131547 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe inflight encounter : weather non adherence : clearance non adherence : far non adherence : required legal separation other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Miss Distance | horizontal : 7000 vertical : 600 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
IFR flight from sio to ttd. Requested NDB-a, which is only INS approach to ttd, but it crosses ILS 28R at pdx. Instructed to hold at cabba, efc 10 mins, then 15 mins more due to heavy traffic on ILS 28R. As other planes were landing at ttd SVFR, I cancelled IFR and requested SVFR to avoid conflict with pdx. Instructed to fly to southeast gresham and remain clear of control zone at or below 1200' MSL and squawk 1200. Flew to southeast gresham and asked pdx approach if ok to circle here. Circled southeast gresham at 1000' for 10 mins waiting clearance. Cleared to enter control zone from south at or below 1200'. Handed off to ttd tower. Low broken scud with tops 800-1000'. Very difficult to locate airport or position by pilotage. Pdx DME OTS. Used ADF to remain east of pdx control zone. Flew N1 then east on top to ttd at 1000'. Saw air carrier on ILS 28R pdx about 1 1/2 mi and 600' above. As WX on top was cavu, we saw each other and no evasive action was necessary. Pdx tower said that I had strayed into their control zone by 2 mi. I don't believe so, as my ADF indicated east of laker. I should have been more patient and remained IFR. Pdx approach could have assisted with vectors. A wbound approach would be helpful at ttd. I think ATC should not cut loose VFR traffic landing at GA ports adjacent to large commercial airports. This is when radar is of greater value in promoting safety.
Original NASA ASRS Text
Title: UNAUTH PENETRATION OF CONTROL ZONE BY SMA WHICH HAD CANCELLED IFR TO NEIGHBORING ARPT AND REQUESTED A SVFR TO DEST.
Narrative: IFR FLT FROM SIO TO TTD. REQUESTED NDB-A, WHICH IS ONLY INS APCH TO TTD, BUT IT CROSSES ILS 28R AT PDX. INSTRUCTED TO HOLD AT CABBA, EFC 10 MINS, THEN 15 MINS MORE DUE TO HEAVY TFC ON ILS 28R. AS OTHER PLANES WERE LNDG AT TTD SVFR, I CANCELLED IFR AND REQUESTED SVFR TO AVOID CONFLICT WITH PDX. INSTRUCTED TO FLY TO SE GRESHAM AND REMAIN CLR OF CTL ZONE AT OR BELOW 1200' MSL AND SQUAWK 1200. FLEW TO SE GRESHAM AND ASKED PDX APCH IF OK TO CIRCLE HERE. CIRCLED SE GRESHAM AT 1000' FOR 10 MINS WAITING CLRNC. CLRED TO ENTER CTL ZONE FROM S AT OR BELOW 1200'. HANDED OFF TO TTD TWR. LOW BROKEN SCUD WITH TOPS 800-1000'. VERY DIFFICULT TO LOCATE ARPT OR POS BY PILOTAGE. PDX DME OTS. USED ADF TO REMAIN E OF PDX CTL ZONE. FLEW N1 THEN E ON TOP TO TTD AT 1000'. SAW ACR ON ILS 28R PDX ABOUT 1 1/2 MI AND 600' ABOVE. AS WX ON TOP WAS CAVU, WE SAW EACH OTHER AND NO EVASIVE ACTION WAS NECESSARY. PDX TWR SAID THAT I HAD STRAYED INTO THEIR CTL ZONE BY 2 MI. I DON'T BELIEVE SO, AS MY ADF INDICATED E OF LAKER. I SHOULD HAVE BEEN MORE PATIENT AND REMAINED IFR. PDX APCH COULD HAVE ASSISTED WITH VECTORS. A WBOUND APCH WOULD BE HELPFUL AT TTD. I THINK ATC SHOULD NOT CUT LOOSE VFR TFC LNDG AT GA PORTS ADJACENT TO LARGE COMMERCIAL ARPTS. THIS IS WHEN RADAR IS OF GREATER VALUE IN PROMOTING SAFETY.
Data retrieved from NASA's ASRS site as of August 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.