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Altitude deviation altitude overshot in climb results in TCASII RA on same direction traffic, mandating evasive action descent. Altitude excursion. Proximity of traffic. Potential conflict less than standard separation.
| Attributes | |
| ACN | 231943 |
| Time | |
| Date | 199301 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : den |
| State Reference | CO |
| Altitude | msl bound lower : 20300 msl bound upper : 21400 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdv |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude cruise other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Small Transport, Low Wing, 2 Recip Eng |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : commercial pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 176 flight time total : 12894 flight time type : 7657 |
| ASRS Report | 231943 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude altitude deviation : overshoot conflict : airborne less severe non adherence : far non adherence : clearance non adherence : required legal separation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 600 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Flight conditions were cloud layer from FL200 through FL230 with continuous light turbulence. Other aircraft was, according to den ATC an small transport twin. We were notified of traffic by ATC at 12 O'clock 5 mins ahead at FL220 and that we would be given a climb after 5 mins. ATC then notified other aircraft of our position and altitude (I can't remember his response). We then saw him on TCASII. After that, we got an RA 'descend!' verbally, and an indication of 2000 FPM. I disconnected the autoplt and complied. At about 2300 FPM we got a 'monitor vertical speed' verbal message and at FL205 a 'clear of conflict' verbal message. In leveling off, we descended to FL203 and then began to climb back up. According to our TCASII, we missed the traffic by 600 ft. We notified ATC of our TCASII alert.
Original NASA ASRS Text
Title: ALTDEV ALT OVERSHOT IN CLB RESULTS IN TCASII RA ON SAME DIRECTION TFC, MANDATING EVASIVE ACTION DSCNT. ALT EXCURSION. PROX OF TFC. POTENTIAL CONFLICT LTSS.
Narrative: FLT CONDITIONS WERE CLOUD LAYER FROM FL200 THROUGH FL230 WITH CONTINUOUS LIGHT TURB. OTHER ACFT WAS, ACCORDING TO DEN ATC AN SMT TWIN. WE WERE NOTIFIED OF TFC BY ATC AT 12 O'CLOCK 5 MINS AHEAD AT FL220 AND THAT WE WOULD BE GIVEN A CLB AFTER 5 MINS. ATC THEN NOTIFIED OTHER ACFT OF OUR POS AND ALT (I CAN'T REMEMBER HIS RESPONSE). WE THEN SAW HIM ON TCASII. AFTER THAT, WE GOT AN RA 'DSND!' VERBALLY, AND AN INDICATION OF 2000 FPM. I DISCONNECTED THE AUTOPLT AND COMPLIED. AT ABOUT 2300 FPM WE GOT A 'MONITOR VERT SPD' VERBAL MESSAGE AND AT FL205 A 'CLR OF CONFLICT' VERBAL MESSAGE. IN LEVELING OFF, WE DSNDED TO FL203 AND THEN BEGAN TO CLB BACK UP. ACCORDING TO OUR TCASII, WE MISSED THE TFC BY 600 FT. WE NOTIFIED ATC OF OUR TCASII ALERT.
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.