 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Captain of mdt air carrier aircraft responded to TCASII RA and climbed above assigned altitude and cleared traffic by approximately 100 ft resulting in a near midair collision.
| Attributes | |
| ACN | 207630 |
| Time | |
| Date | 199204 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : bdr |
| State Reference | CT |
| Altitude | msl bound lower : 9000 msl bound upper : 9300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Transport, High Wing, 2 Turboprop Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 8000 flight time type : 3055 |
| ASRS Report | 207630 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : nmac non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Miss Distance | horizontal : 100 vertical : 400 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We had just crossed bdr VOR and were intercepting the 054 degree radial for V229. TCASII issued TA (intruder) at 1:30 -300. Moments later ATC called the traffic as unconfirmed VFR. We did not see him. Then TCASII issued RA (threat) 'climb.' I disconnected autoplt and climbed at the indicated rate from 9000 to 9300 at which point TCASII announced 'clear of conflict.' the first officer sighted the threat aircraft as it passed directly beneath us. During the climb we had advised ATC of the RA and our response to it. ATC was unaware that we were TCASII equipped as the company had not filed the flight plan to indicate such. He had not been prepared for a TCASII event. He then pointed out that we were 2 mi east of V229 which seemed unnecessary as we had just crossed the VOR and were in the process of intercepting the course.
Original NASA ASRS Text
Title: CAPT OF MDT ACR ACFT RESPONDED TO TCASII RA AND CLBED ABOVE ASSIGNED ALT AND CLRED TFC BY APPROX 100 FT RESULTING IN A NMAC.
Narrative: WE HAD JUST CROSSED BDR VOR AND WERE INTERCEPTING THE 054 DEG RADIAL FOR V229. TCASII ISSUED TA (INTRUDER) AT 1:30 -300. MOMENTS LATER ATC CALLED THE TFC AS UNCONFIRMED VFR. WE DID NOT SEE HIM. THEN TCASII ISSUED RA (THREAT) 'CLB.' I DISCONNECTED AUTOPLT AND CLBED AT THE INDICATED RATE FROM 9000 TO 9300 AT WHICH POINT TCASII ANNOUNCED 'CLR OF CONFLICT.' THE FO SIGHTED THE THREAT ACFT AS IT PASSED DIRECTLY BENEATH US. DURING THE CLB WE HAD ADVISED ATC OF THE RA AND OUR RESPONSE TO IT. ATC WAS UNAWARE THAT WE WERE TCASII EQUIPPED AS THE COMPANY HAD NOT FILED THE FLT PLAN TO INDICATE SUCH. HE HAD NOT BEEN PREPARED FOR A TCASII EVENT. HE THEN POINTED OUT THAT WE WERE 2 MI E OF V229 WHICH SEEMED UNNECESSARY AS WE HAD JUST CROSSED THE VOR AND WERE IN THE PROCESS OF INTERCEPTING THE COURSE.
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.