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SF34 crew had track deviation which resulted in loss of spacing.
| Attributes | |
| ACN | 465081 |
| Time | |
| Date | 200003 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : gdm.vortac |
| State Reference | MA |
| Altitude | msl single value : 6500 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zbw.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | SF 340B |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | descent : vacating altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zbw.artcc |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise : level |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 150 flight time total : 11000 flight time type : 3500 |
| ASRS Report | 465081 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial pilot : cfi |
| Experience | flight time last 90 days : 150 flight time total : 3200 flight time type : 800 |
| ASRS Report | 464925 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : clearance non adherence : required legal separation other spatial deviation |
| Independent Detector | other controllera other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance controller : issued alert |
| Consequence | faa : investigated faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 22800 vertical : 400 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On mar/xa/00, I was operating an lga-mht flight. I was PNF. Just prior gdm VOR, I went off the ATC frequency to get the ATIS for mht. Upon returning to the frequency, the first officer (PNF) was turning to the outbound radial from gdm. He then remarked that ZBW wanted us to maintain our heading prior to gdm and promptly turned back to it. Center observed the outbound turn and instructed us to turn back. We advised we were doing so. Center also advised us of traffic which we observed on TCASII. There was no TA or RA from the system. The flight proceeded uneventfully to mht. ZBW called us on the ground at mht and said there may have been a loss of separation with the other aircraft. Their review of the radar tape showed this to be the case, 3.8 NM and 400 ft.
Original NASA ASRS Text
Title: SF34 CREW HAD TRACK DEV WHICH RESULTED IN LOSS OF SPACING.
Narrative: ON MAR/XA/00, I WAS OPERATING AN LGA-MHT FLT. I WAS PNF. JUST PRIOR GDM VOR, I WENT OFF THE ATC FREQ TO GET THE ATIS FOR MHT. UPON RETURNING TO THE FREQ, THE FO (PNF) WAS TURNING TO THE OUTBOUND RADIAL FROM GDM. HE THEN REMARKED THAT ZBW WANTED US TO MAINTAIN OUR HDG PRIOR TO GDM AND PROMPTLY TURNED BACK TO IT. CTR OBSERVED THE OUTBOUND TURN AND INSTRUCTED US TO TURN BACK. WE ADVISED WE WERE DOING SO. CTR ALSO ADVISED US OF TFC WHICH WE OBSERVED ON TCASII. THERE WAS NO TA OR RA FROM THE SYS. THE FLT PROCEEDED UNEVENTFULLY TO MHT. ZBW CALLED US ON THE GND AT MHT AND SAID THERE MAY HAVE BEEN A LOSS OF SEPARATION WITH THE OTHER ACFT. THEIR REVIEW OF THE RADAR TAPE SHOWED THIS TO BE THE CASE, 3.8 NM AND 400 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.