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Aircraft conducting aerial survey at 16;500 was instructed to stop altitude squawk by ATC; close proximity traffic reported TCAS event; visual separation was being applied during the entire event.
| Attributes | |
| ACN | 847013 |
| Time | |
| Date | 200908 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ATL.Airport |
| State Reference | GA |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Small Aircraft |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Flight Plan | VFR |
| Aircraft 2 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Flying Single Pilot |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Instructor |
| Experience | Flight Crew Last 90 Days 100 Flight Crew Total 4300 Flight Crew Type 600 |
| Events | |
| Anomaly | Conflict Airborne Conflict |
| Miss Distance | Horizontal 1500 Vertical 1500 |
Narrative:
A routine aerial survey flight was being conducted in a north/south direction in the vicinity of ZZZ VOR. The mission was being conducted under part 91 at a constant altitude of 16;500 MSL. A VFR flight plan was filed and activated and the flight was conducted under VFR flight following with center. Center instructed us to 'turn off the altitude squawk' on our transponder and notify ATC of any altitude changes. No other altitude changes were made for the duration of the survey flight. The flight continued in the area for another 45min-1hour and ATC notified our aircraft of traffic in the area descending below our altitude. I called traffic 'in sight; passing below; no factor.' the other aircraft received a TCAS alert and notified center. Visual separation was maintained throughout this occurrence.
Original NASA ASRS Text
Title: Aircraft conducting aerial survey at 16;500 was instructed to stop altitude squawk by ATC; close proximity traffic reported TCAS event; visual separation was being applied during the entire event.
Narrative: A routine aerial survey flight was being conducted in a north/south direction in the vicinity of ZZZ VOR. The mission was being conducted under Part 91 at a constant altitude of 16;500 MSL. A VFR flight plan was filed and activated and the flight was conducted under VFR flight following with Center. Center instructed us to 'turn off the altitude squawk' on our transponder and notify ATC of any altitude changes. No other altitude changes were made for the duration of the survey flight. The flight continued in the area for another 45min-1hour and ATC notified our aircraft of traffic in the area descending below our altitude. I called traffic 'in sight; passing below; no factor.' The other aircraft received a TCAS alert and notified Center. Visual separation was maintained throughout this occurrence.
Data retrieved from NASA's ASRS site as of April 2012 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.