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TCASII RA leads to an altitude excursion for an air carrier medium large transport being vectored for an approach at ric.
| Attributes | |
| ACN | 179041 |
| Time | |
| Date | 199105 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : ric |
| State Reference | VA |
| Altitude | msl bound lower : 4000 msl bound upper : 4700 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ric |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 60 flight time total : 11000 |
| ASRS Report | 179041 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 240 flight time total : 3700 flight time type : 200 |
| ASRS Report | 179032 |
| 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 | faa : reviewed incident with flight crew |
| Miss Distance | vertical : 400 |
| Supplementary | |
| Primary Problem | Ambiguous |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were being vectored for a visibility approach by ric approach control to runway 20. We were at 4000' approximately 8 mi northwest of airport. We first received 2 TA's on our TCASII system. It was advising us of traffic 400' below at 11 O'clock, about 3-4 mi leg. While looking for that traffic we received an RA on the traffic 400' below us at 1 O'clock, very close. It showed we needed to start a climb of at least 1000 FPM for avoidance. We were also received oral warnings of, 'climb, climb.' a climb of 3000 FPM was immediately started for 1-2 seconds, then shallowed out to 1200-1500 FPM. After a few hundred ft of climb, we received an oral advisory of, 'clear of traffic, descend to assigned altitude,' which we did. During our climb, approach control was trying to call us to tell us we were climbing into traffic. We learned this after talking to the controller over the phone once we were on the ground. We could not hear any of approach control's communications because of the very loud oral warnings we were getting from our TCASII. We ended up climbing to 4700' before descending back to our altitude. The TCASII system worked as it was supposed to and we followed its instructions as we are trained to do. The biggest problem encountered was that the oral warnings associated with our TCASII are so loud they completely blank out other communications. We cannot turn down the vol as there are no vol controls.
Original NASA ASRS Text
Title: TCASII RA LEADS TO AN ALT EXCURSION FOR AN ACR MLG BEING VECTORED FOR AN APCH AT RIC.
Narrative: WE WERE BEING VECTORED FOR A VIS APCH BY RIC APCH CTL TO RWY 20. WE WERE AT 4000' APPROX 8 MI NW OF ARPT. WE FIRST RECEIVED 2 TA'S ON OUR TCASII SYS. IT WAS ADVISING US OF TFC 400' BELOW AT 11 O'CLOCK, ABOUT 3-4 MI LEG. WHILE LOOKING FOR THAT TFC WE RECEIVED AN RA ON THE TFC 400' BELOW US AT 1 O'CLOCK, VERY CLOSE. IT SHOWED WE NEEDED TO START A CLB OF AT LEAST 1000 FPM FOR AVOIDANCE. WE WERE ALSO RECEIVED ORAL WARNINGS OF, 'CLB, CLB.' A CLB OF 3000 FPM WAS IMMEDIATELY STARTED FOR 1-2 SECS, THEN SHALLOWED OUT TO 1200-1500 FPM. AFTER A FEW HUNDRED FT OF CLB, WE RECEIVED AN ORAL ADVISORY OF, 'CLR OF TFC, DSND TO ASSIGNED ALT,' WHICH WE DID. DURING OUR CLB, APCH CTL WAS TRYING TO CALL US TO TELL US WE WERE CLBING INTO TFC. WE LEARNED THIS AFTER TALKING TO THE CTLR OVER THE PHONE ONCE WE WERE ON THE GND. WE COULD NOT HEAR ANY OF APCH CTL'S COMS BECAUSE OF THE VERY LOUD ORAL WARNINGS WE WERE GETTING FROM OUR TCASII. WE ENDED UP CLBING TO 4700' BEFORE DSNDING BACK TO OUR ALT. THE TCASII SYS WORKED AS IT WAS SUPPOSED TO AND WE FOLLOWED ITS INSTRUCTIONS AS WE ARE TRAINED TO DO. THE BIGGEST PROB ENCOUNTERED WAS THAT THE ORAL WARNINGS ASSOCIATED WITH OUR TCASII ARE SO LOUD THEY COMPLETELY BLANK OUT OTHER COMS. WE CANNOT TURN DOWN THE VOL AS THERE ARE NO VOL CTLS.
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.