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Air carrier widebody transport altitude deviation excursion from clearance altitude in response to TCASII RA.
| Attributes | |
| ACN | 185038 |
| Time | |
| Date | 199107 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : buj |
| State Reference | TX |
| Altitude | msl bound lower : 23400 msl bound upper : 24000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zfw |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 3 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 130 flight time total : 6000 |
| ASRS Report | 185038 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| ASRS Report | 185294 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
During cruise at FL240 inbound to buj VOR received a TCAS TA at 1 O'clock, 4 mi, then shortly afterwards received an RA to descend at 1200 FPM for about 600 ft then a level off followed by a TCAS all clear. Returned to FL240. Advised ATC of descent as it was initiated. They had only an MTR that passed over our position at FL370. No visual contact was made throughout encounter. The validity of the RA could not be verified.
Original NASA ASRS Text
Title: ACR WDB ALT DEV EXCURSION FROM CLRNC ALT IN RESPONSE TO TCASII RA.
Narrative: DURING CRUISE AT FL240 INBOUND TO BUJ VOR RECEIVED A TCAS TA AT 1 O'CLOCK, 4 MI, THEN SHORTLY AFTERWARDS RECEIVED AN RA TO DSND AT 1200 FPM FOR ABOUT 600 FT THEN A LEVEL OFF FOLLOWED BY A TCAS ALL CLR. RETURNED TO FL240. ADVISED ATC OF DSCNT AS IT WAS INITIATED. THEY HAD ONLY AN MTR THAT PASSED OVER OUR POS AT FL370. NO VISUAL CONTACT WAS MADE THROUGHOUT ENCOUNTER. THE VALIDITY OF THE RA COULD NOT BE VERIFIED.
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.