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B737 crew landing sea is issued a visual approach clearance to runway 34L and report unable to see another B737 along side for runway 34R.
| Attributes | |
| ACN | 588915 |
| Time | |
| Date | 200307 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sea.airport |
| State Reference | WA |
| Altitude | msl single value : 5000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : s46.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : s46.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach landing : go around |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 588915 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : commercial pilot : instrument |
| ASRS Report | 588916 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : radar aircraft equipment : tcas other controllera other flight crewa other flight crewb other other : 3 |
| Resolutory Action | flight crew : executed go around other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Ambiguous |
Narrative:
We were cleared for a visual approach for sea runway 34R and a B737 was cleared for a visual for sea runway 34L. We reported aircraft Y in sight and kept the aircraft in sight throughout the approach (until they went missed). We were not told to follow anyone. Aircraft Y was following a B757. Our vector and turn on to final put us right next to each other. We were not staggered. One of the aircraft Y pilots was obviously concerned by the tone in his voice and we heard their TCASII in the background. This reminded me to switch our TCASII to TA only. As I switched the TCASII to TA only we received an RA. We complied and were able to continue the approach to a normal landing. ATC asked us during the approach, 'do you have the B757 in sight,' referring to the aircraft Y was following. We stated that we did not. Aircraft Y called ATC and said something to the effect 'how can air carrier not see us we're right next to him, we're going around.' they turned left and discontinued their approach. I should have switched the TCASII to TA only earlier, but realized my mistake and thought we received a 'monitor vertical speed' RA, which we complied to, felt continuing the approach was appropriate.
Original NASA ASRS Text
Title: B737 CREW LNDG SEA IS ISSUED A VISUAL APCH CLRNC TO RWY 34L AND RPT UNABLE TO SEE ANOTHER B737 ALONG SIDE FOR RWY 34R.
Narrative: WE WERE CLRED FOR A VISUAL APCH FOR SEA RWY 34R AND A B737 WAS CLRED FOR A VISUAL FOR SEA RWY 34L. WE RPTED ACFT Y IN SIGHT AND KEPT THE ACFT IN SIGHT THROUGHOUT THE APCH (UNTIL THEY WENT MISSED). WE WERE NOT TOLD TO FOLLOW ANYONE. ACFT Y WAS FOLLOWING A B757. OUR VECTOR AND TURN ON TO FINAL PUT US RIGHT NEXT TO EACH OTHER. WE WERE NOT STAGGERED. ONE OF THE ACFT Y PLTS WAS OBVIOUSLY CONCERNED BY THE TONE IN HIS VOICE AND WE HEARD THEIR TCASII IN THE BACKGROUND. THIS REMINDED ME TO SWITCH OUR TCASII TO TA ONLY. AS I SWITCHED THE TCASII TO TA ONLY WE RECEIVED AN RA. WE COMPLIED AND WERE ABLE TO CONTINUE THE APCH TO A NORMAL LNDG. ATC ASKED US DURING THE APCH, 'DO YOU HAVE THE B757 IN SIGHT,' REFERRING TO THE ACFT Y WAS FOLLOWING. WE STATED THAT WE DID NOT. ACFT Y CALLED ATC AND SAID SOMETHING TO THE EFFECT 'HOW CAN ACR NOT SEE US WE'RE RIGHT NEXT TO HIM, WE'RE GOING AROUND.' THEY TURNED L AND DISCONTINUED THEIR APCH. I SHOULD HAVE SWITCHED THE TCASII TO TA ONLY EARLIER, BUT REALIZED MY MISTAKE AND THOUGHT WE RECEIVED A 'MONITOR VERT SPD' RA, WHICH WE COMPLIED TO, FELT CONTINUING THE APCH WAS APPROPRIATE.
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.