|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1801 To 2400|
|Locale Reference||airport : pdx.airport|
|Operator||common carrier : air carrier|
|Make Model Name||Commercial Fixed Wing|
|Operating Under FAR Part||Part 121|
|Flight Phase||descent : approach|
|Affiliation||company : air carrier|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : atp|
|Anomaly||conflict : airborne critical|
non adherence : company policies
non adherence : published procedure
|Independent Detector||other flight crewa|
|Resolutory Action||flight crew : returned to original clearance|
flight crew : took precautionary avoidance action
|Problem Areas||Airspace Structure|
Flight Crew Human Performance
|Primary Problem||Flight Crew Human Performance|
During a commuter visual approach to runway 10R in pdx; I sighted a single engine cessna departing opposite direction from pearson. I lost sight of the traffic as it was climbing steeply to the west underneath my aircraft. Simultaneously; the TCAS issued a TA followed by a reduce descent RA at about 1200 ft AGL. The first officer responded by raising the nose to level flight (in the green arc). A few seconds later; the TCAS changed the RA to 'climb' with a target vertical speed of 2000 FPM. I commanded the first officer 'go missed;' and turned my attention back inside to assist with power application. I found the first officer raising the nose further; and adding a small amount of power. He never did initiate the missed approach; but the TCAS announced 'clear of conflict.' the gear was already extended prior to the RA; so we completed confign for landing. The TCAS then self-selected TA only due to our altitude on approach and gave 2 additional TA calls. As we were still in position to make the stabilized approach criteria; we continued the approach and landed. The aircraft departing pearson impinged on the TCAS envelope with its rapid climb. The first officer failed to conduct a missed approach due to the climb RA. First; I think he was unfamiliar with the guidance in the company manual regarding conducting a missed approach procedure in response to a climb RA while in the landing confign. In addition; with all of the radio chatter and the TCAS yelling at us; he did not hear me command the missed approach. At the time of the second; climb RA; I felt that the airplane's energy state had dwindled to a point where a significant power application was needed in order to obtain the rates of climb required; even momentarily. I was reaching for the controls to take over when the TCAS announced clear of conflict. The delay between the RA; my command to miss; and my decision to take over resulted in our failure to obtain rates of climb anywhere near that displayed on the TCAS arc.
Original NASA ASRS Text
Title: ACR CAPT REPORTED HIS FO FAILED TO FOLLOW COMPANY PROCEDURES WHEN REACTING TO AN RA ON APCH TO PDX.
Narrative: DURING A COMMUTER VISUAL APCH TO RWY 10R IN PDX; I SIGHTED A SINGLE ENG CESSNA DEPARTING OPPOSITE DIRECTION FROM PEARSON. I LOST SIGHT OF THE TFC AS IT WAS CLBING STEEPLY TO THE W UNDERNEATH MY ACFT. SIMULTANEOUSLY; THE TCAS ISSUED A TA FOLLOWED BY A REDUCE DSCNT RA AT ABOUT 1200 FT AGL. THE FO RESPONDED BY RAISING THE NOSE TO LEVEL FLT (IN THE GREEN ARC). A FEW SECONDS LATER; THE TCAS CHANGED THE RA TO 'CLB' WITH A TARGET VERT SPD OF 2000 FPM. I COMMANDED THE FO 'GO MISSED;' AND TURNED MY ATTN BACK INSIDE TO ASSIST WITH PWR APPLICATION. I FOUND THE FO RAISING THE NOSE FURTHER; AND ADDING A SMALL AMOUNT OF PWR. HE NEVER DID INITIATE THE MISSED APCH; BUT THE TCAS ANNOUNCED 'CLR OF CONFLICT.' THE GEAR WAS ALREADY EXTENDED PRIOR TO THE RA; SO WE COMPLETED CONFIGN FOR LNDG. THE TCAS THEN SELF-SELECTED TA ONLY DUE TO OUR ALT ON APCH AND GAVE 2 ADDITIONAL TA CALLS. AS WE WERE STILL IN POS TO MAKE THE STABILIZED APCH CRITERIA; WE CONTINUED THE APCH AND LANDED. THE ACFT DEPARTING PEARSON IMPINGED ON THE TCAS ENVELOPE WITH ITS RAPID CLB. THE FO FAILED TO CONDUCT A MISSED APCH DUE TO THE CLB RA. FIRST; I THINK HE WAS UNFAMILIAR WITH THE GUIDANCE IN THE COMPANY MANUAL REGARDING CONDUCTING A MISSED APCH PROC IN RESPONSE TO A CLB RA WHILE IN THE LNDG CONFIGN. IN ADDITION; WITH ALL OF THE RADIO CHATTER AND THE TCAS YELLING AT US; HE DID NOT HEAR ME COMMAND THE MISSED APCH. AT THE TIME OF THE SECOND; CLB RA; I FELT THAT THE AIRPLANE'S ENERGY STATE HAD DWINDLED TO A POINT WHERE A SIGNIFICANT PWR APPLICATION WAS NEEDED IN ORDER TO OBTAIN THE RATES OF CLB REQUIRED; EVEN MOMENTARILY. I WAS REACHING FOR THE CTLS TO TAKE OVER WHEN THE TCAS ANNOUNCED CLR OF CONFLICT. THE DELAY BTWN THE RA; MY COMMAND TO MISS; AND MY DECISION TO TAKE OVER RESULTED IN OUR FAILURE TO OBTAIN RATES OF CLB ANYWHERE NEAR THAT DISPLAYED ON THE TCAS ARC.
Data retrieved from NASA's ASRS site as of May 2009 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.