Flight crew of an large transport air carrier aircraft climbed and started a go around during a visu...

Attributes
ACN	258397
Time
Date	199312
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lax
State Reference	CA
Altitude	msl bound lower : 4000 msl bound upper : 4000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : lax
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent : approach descent other
Route In Use	approach : visual arrival other
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise other
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : commercial pilot : cfi pilot : atp pilot : instrument
Experience	flight time last 90 days : 220 flight time total : 6000 flight time type : 1800
ASRS Report	258397
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : required legal separation non adherence : clearance other anomaly other other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	controller : issued new clearance other other
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 0 vertical : 1000
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Approach cleared us to cross fuelr at 8000 ft then descend to 5000 ft. After fuelr ATC cleared us for a visual to 25R. ATC advised traffic on visual to 25L. We had a TCASII but not visually. Traffic behind lower. We were slowed to 170 KTS. Advised descending out of 5000 ft, we got an RA on TCASII to climb. Captain elected to follow and execute a go around. Climbed. I advised approach, then tower. Tower told us to descend to 2000 ft. Starting the descent, approaching runway beyond limma, descended to 4000 ft. Tower advised traffic (in lax corridor). Got another RA to climb, got visual on traffic. He passed beneath us. Advised tower. They cleared us to 3000 ft. We were vectored for visual to 24R without incident. During taxi in, tower supervisor requested crew call. Captain called. Hearing only one SID, I determined supervisor and captain were at odds on decision to go around and procedures we followed. We are trained to react to an RA. However, in terminal areas, VFR conditions, ATC control, parallel approachs, we have authority/authorized to turn TCASII to TA only. Feel contributing factors were confusing on air carrier procedure. As we were slowed to 170 KTS, to descend on visual the other aircraft was faster at a steady altitude. Being parallel approachs, TCASII computer read a possible conflict. Computer has no way of knowing particular unusual circumstances. Better coordination between crew and ATC (i.e., ATC advising us aircraft in back of us had us in sight -- no problem). Second conflict I feel more dangerous since we were in VFR corridor over lax. Conflict avoided because of visual contact.

Original NASA ASRS Text

Title: FLC OF AN LGT ACR ACFT CLBED AND STARTED A GAR DURING A VISUAL APCH TO PARALLEL RWYS IN RESPONSE TO A TCASII RA.

Narrative: APCH CLRED US TO CROSS FUELR AT 8000 FT THEN DSND TO 5000 FT. AFTER FUELR ATC CLRED US FOR A VISUAL TO 25R. ATC ADVISED TFC ON VISUAL TO 25L. WE HAD A TCASII BUT NOT VISUALLY. TFC BEHIND LOWER. WE WERE SLOWED TO 170 KTS. ADVISED DSNDING OUT OF 5000 FT, WE GOT AN RA ON TCASII TO CLB. CAPT ELECTED TO FOLLOW AND EXECUTE A GAR. CLBED. I ADVISED APCH, THEN TWR. TWR TOLD US TO DSND TO 2000 FT. STARTING THE DSCNT, APCHING RWY BEYOND LIMMA, DSNDED TO 4000 FT. TWR ADVISED TFC (IN LAX CORRIDOR). GOT ANOTHER RA TO CLB, GOT VISUAL ON TFC. HE PASSED BENEATH US. ADVISED TWR. THEY CLRED US TO 3000 FT. WE WERE VECTORED FOR VISUAL TO 24R WITHOUT INCIDENT. DURING TAXI IN, TWR SUPVR REQUESTED CREW CALL. CAPT CALLED. HEARING ONLY ONE SID, I DETERMINED SUPVR AND CAPT WERE AT ODDS ON DECISION TO GAR AND PROCS WE FOLLOWED. WE ARE TRAINED TO REACT TO AN RA. HOWEVER, IN TERMINAL AREAS, VFR CONDITIONS, ATC CTL, PARALLEL APCHS, WE HAVE AUTH TO TURN TCASII TO TA ONLY. FEEL CONTRIBUTING FACTORS WERE CONFUSING ON ACR PROC. AS WE WERE SLOWED TO 170 KTS, TO DSND ON VISUAL THE OTHER ACFT WAS FASTER AT A STEADY ALT. BEING PARALLEL APCHS, TCASII COMPUTER READ A POSSIBLE CONFLICT. COMPUTER HAS NO WAY OF KNOWING PARTICULAR UNUSUAL CIRCUMSTANCES. BETTER COORD BTWN CREW AND ATC (I.E., ATC ADVISING US ACFT IN BACK OF US HAD US IN SIGHT -- NO PROB). SECOND CONFLICT I FEEL MORE DANGEROUS SINCE WE WERE IN VFR CORRIDOR OVER LAX. CONFLICT AVOIDED BECAUSE OF VISUAL CONTACT.

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.

Flight crew of an large transport air carrier aircraft climbed and started a go around during a visual approach to parallel runways in response to a TCASII RA.