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An IFR PA31 misunderstands assigned heading and conflicts with an arriving C560 in descent to ith.
| Attributes | |
| ACN | 706708 |
| Time | |
| Date | 200608 |
| Place | |
| State Reference | NY |
| Altitude | msl single value : 6000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : elm.tracon |
| Operator | general aviation : personal |
| Make Model Name | PA-31 Navajo Chieftan/Mojave/Navajo T1020 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : initial |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : elm.tracon |
| Operator | general aviation : corporate |
| Make Model Name | Citation V |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller limited radar : 13 controller radar : 6 |
| ASRS Report | 706708 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Events | |
| Anomaly | conflict : airborne critical non adherence : clearance non adherence : required legal separation other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Airspace Structure ATC Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Pilot aircraft #1 requested IFR clearance (over ith) and was issued cleared to hancock 186019 as filed (series of VOR fixes for aerial survey) after being radar idented. I then pointed aircraft #1 out to syr approach as first fix was art 146042 and commenced handoff to ZNY. Aircraft #2 was descending to ith with bgm approach approximately 9000 ft descending to 6000 ft and 25 mi southeast. I coordination with bgm initially to put aircraft #2 on 270 degree heading to avoid aircraft #1 who should have proceeded nebound. I climbed aircraft #1 to 8000 ft and handoff to ZNY was completed. Aircraft #1 did not change to ZNY as instructed. Aircraft #2 checked on frequency descending to 6000 ft. Aircraft #1 appeared to be sbound and I then called to see if he was still on frequency and he answered so I issued a turn to 180 degrees; and then turned aircraft #2 to 360 degrees. Both aircraft commenced a turn and courses were then parallel. I queried the pilot as to why he was sbound and he said he thought he was cleared to the hnk fix first (clearance destination). He apparently missed the 'as filed' portion of clearance or misunderstood. The airspace is at 3 corners of approach controls and ZNY overhead; requiring a great deal of coordination for the simple error of aircraft #1 turning sbound instead of nebound.
Original NASA ASRS Text
Title: AN IFR PA31 MISUNDERSTANDS ASSIGNED HDG AND CONFLICTS WITH AN ARRIVING C560 IN DSCNT TO ITH.
Narrative: PLT ACFT #1 REQUESTED IFR CLRNC (OVER ITH) AND WAS ISSUED CLRED TO HANCOCK 186019 AS FILED (SERIES OF VOR FIXES FOR AERIAL SURVEY) AFTER BEING RADAR IDENTED. I THEN POINTED ACFT #1 OUT TO SYR APCH AS FIRST FIX WAS ART 146042 AND COMMENCED HDOF TO ZNY. ACFT #2 WAS DSNDING TO ITH WITH BGM APCH APPROX 9000 FT DSNDING TO 6000 FT AND 25 MI SE. I COORD WITH BGM INITIALLY TO PUT ACFT #2 ON 270 DEG HDG TO AVOID ACFT #1 WHO SHOULD HAVE PROCEEDED NEBOUND. I CLBED ACFT #1 TO 8000 FT AND HDOF TO ZNY WAS COMPLETED. ACFT #1 DID NOT CHANGE TO ZNY AS INSTRUCTED. ACFT #2 CHKED ON FREQ DSNDING TO 6000 FT. ACFT #1 APPEARED TO BE SBOUND AND I THEN CALLED TO SEE IF HE WAS STILL ON FREQ AND HE ANSWERED SO I ISSUED A TURN TO 180 DEGS; AND THEN TURNED ACFT #2 TO 360 DEGS. BOTH ACFT COMMENCED A TURN AND COURSES WERE THEN PARALLEL. I QUERIED THE PLT AS TO WHY HE WAS SBOUND AND HE SAID HE THOUGHT HE WAS CLRED TO THE HNK FIX FIRST (CLRNC DEST). HE APPARENTLY MISSED THE 'AS FILED' PORTION OF CLRNC OR MISUNDERSTOOD. THE AIRSPACE IS AT 3 CORNERS OF APCH CTLS AND ZNY OVERHEAD; REQUIRING A GREAT DEAL OF COORD FOR THE SIMPLE ERROR OF ACFT #1 TURNING SBOUND INSTEAD OF NEBOUND.
Data retrieved from NASA's ASRS site as of January 2009 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.