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ATC advisory about 2 aircraft in front of reporter aircraft. 1 aircraft dropped to reporter aircraft altitude and approached at high speed when reporter took evasive action. ATC was no longer in contact with other aircraft which were military A10's. Reporter suspects the intercept was intentional.
| Attributes | |
| ACN | 325234 |
| Time | |
| Date | 199601 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : cyn |
| State Reference | NJ |
| Altitude | msl bound lower : 11000 msl bound upper : 11500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Route In Use | enroute airway : zny |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Thunderbolt II (Warthog A-10) |
| Operating Under FAR Part | other : other |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 6300 flight time type : 480 |
| ASRS Report | 325234 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : nmac other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 1000 vertical : 500 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Cruising at 11000 ft MSL, phl-jfk in VMC. Received ATC TA for traffic at 12 O'clock. TCASII showed 1 aircraft at 11:30 (1500 ft above) and another aircraft at 12:30 (500 ft above). I spotted both aircraft at about 10 mi but unable to determine type of aircraft or direction of movement. No help from ATC. Within seconds, 11:30 traffic dropped to my altitude or slightly above while approaching us at high speed. Started climbing left turn to go above rapidly descending 11:30 traffic. Gained 300-500 ft very quickly and missed both aircraft by very short distances and altitudes. Center came back and said 2 A10's had just left frequency in that vicinity. Either both pilot's didn't see us (not likely) or decided to play 'chicken.'
Original NASA ASRS Text
Title: ATC ADVISORY ABOUT 2 ACFT IN FRONT OF RPTR ACFT. 1 ACFT DROPPED TO RPTR ACFT ALT AND APCHED AT HIGH SPD WHEN RPTR TOOK EVASIVE ACTION. ATC WAS NO LONGER IN CONTACT WITH OTHER ACFT WHICH WERE MIL A10'S. RPTR SUSPECTS THE INTERCEPT WAS INTENTIONAL.
Narrative: CRUISING AT 11000 FT MSL, PHL-JFK IN VMC. RECEIVED ATC TA FOR TFC AT 12 O'CLOCK. TCASII SHOWED 1 ACFT AT 11:30 (1500 FT ABOVE) AND ANOTHER ACFT AT 12:30 (500 FT ABOVE). I SPOTTED BOTH ACFT AT ABOUT 10 MI BUT UNABLE TO DETERMINE TYPE OF ACFT OR DIRECTION OF MOVEMENT. NO HELP FROM ATC. WITHIN SECONDS, 11:30 TFC DROPPED TO MY ALT OR SLIGHTLY ABOVE WHILE APCHING US AT HIGH SPD. STARTED CLBING L TURN TO GO ABOVE RAPIDLY DSNDING 11:30 TFC. GAINED 300-500 FT VERY QUICKLY AND MISSED BOTH ACFT BY VERY SHORT DISTANCES AND ALTS. CTR CAME BACK AND SAID 2 A10'S HAD JUST LEFT FREQ IN THAT VICINITY. EITHER BOTH PLT'S DIDN'T SEE US (NOT LIKELY) OR DECIDED TO PLAY 'CHICKEN.'
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.