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Air carrier X non adherence to ATC clearance TCASII RA excursion from assigned altitude. Pilot deviation.
| Attributes | |
| ACN | 174212 |
| Time | |
| Date | 199103 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : clt |
| State Reference | NC |
| Altitude | msl bound lower : 8000 msl bound upper : 9000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : clt |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 30 flight time total : 18000 flight time type : 2000 |
| ASRS Report | 174212 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 800 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Air carrier X informed controller that we would climb. He said no! RA said, 'climb now.' air carrier X climbed 300' and returned to 9000' after visibility contact and TCAS clear. Callback conversation with reporter revealed the following: reporter stated the TCASII system being used gives a lot of false targets. When the flight crew received the RA, they informed the controller they would climb. When the controller said 'no,' he did not issue traffic. Traffic was an medium large transport in a high rate of climb to assigned altitude 8000'.
Original NASA ASRS Text
Title: ACR X NON ADHERENCE TO ATC CLRNC TCASII RA EXCURSION FROM ASSIGNED ALT. PLT DEVIATION.
Narrative: ACR X INFORMED CTLR THAT WE WOULD CLB. HE SAID NO! RA SAID, 'CLB NOW.' ACR X CLBED 300' AND RETURNED TO 9000' AFTER VIS CONTACT AND TCAS CLR. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: RPTR STATED THE TCASII SYS BEING USED GIVES A LOT OF FALSE TARGETS. WHEN THE FLT CREW RECEIVED THE RA, THEY INFORMED THE CTLR THEY WOULD CLB. WHEN THE CTLR SAID 'NO,' HE DID NOT ISSUE TFC. TFC WAS AN MLG IN A HIGH RATE OF CLB TO ASSIGNED ALT 8000'.
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.