An air carrier aircraft on las 19L short final was issued an ATC go around as another air carrier wa...

Attributes
ACN	781514
Time
Date	200804
Place
Locale Reference	airport : las.airport
State Reference	NV
Altitude	msl single value : 500
Aircraft 1
Controlling Facilities	tower : las.tower
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 182 flight time total : 14749 flight time type : 595
ASRS Report	781514
Person 2
Affiliation	government : faa
Function	controller : local
Events
Anomaly	conflict : nmac non adherence : published procedure non adherence : required legal separation
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued new clearance controller : separated traffic flight crew : executed go around flight crew : took evasive action
Supplementary
Problem Areas	Airport ATC Human Performance
Primary Problem	ATC Human Performance

Narrative:

Possible las ATC separation/protocol error. At approximately 400-500 ft AGL on stabilized visual approach (no instrument approach backup) to las runway 19L; the tower instructed us to go around; 'air carrier X go around.' somewhat stunned; and for a split second trying to analyze why and seeing nothing apparently wrong; I proceeded to go around making the appropriate callouts and flying the go around profile runway heading. As I pitched up I saw an air carrier B737 at my altitude having also gone around or taken off a runway 25. Noting that I was actually on a potential collision course; as I was beginning to make an evasive left turn for safety; the tower issued a left turn to a heading 170 degrees. Just as I reached the heading he wanted me back to runway heading. I was unaware of the specific operations on the 25 runways due to different tower frequencys; thus a bit surprised of the go around and other traffic. The tower did not give a reason for the go around and I felt the reason and procedure was a little odd as did some observers from another jet; referencing an air show kind of event; that I later learned.

Original NASA ASRS Text

Title: AN ACR ACFT ON LAS 19L SHORT FINAL WAS ISSUED AN ATC GAR AS ANOTHER ACR WAS DEPARTING RWY 25.

Narrative: POSSIBLE LAS ATC SEPARATION/PROTOCOL ERROR. AT APPROX 400-500 FT AGL ON STABILIZED VISUAL APCH (NO INST APCH BACKUP) TO LAS RWY 19L; THE TWR INSTRUCTED US TO GO AROUND; 'ACR X GO AROUND.' SOMEWHAT STUNNED; AND FOR A SPLIT SECOND TRYING TO ANALYZE WHY AND SEEING NOTHING APPARENTLY WRONG; I PROCEEDED TO GO AROUND MAKING THE APPROPRIATE CALLOUTS AND FLYING THE GAR PROFILE RWY HDG. AS I PITCHED UP I SAW AN ACR B737 AT MY ALT HAVING ALSO GONE AROUND OR TAKEN OFF A RWY 25. NOTING THAT I WAS ACTUALLY ON A POTENTIAL COLLISION COURSE; AS I WAS BEGINNING TO MAKE AN EVASIVE L TURN FOR SAFETY; THE TWR ISSUED A L TURN TO A HDG 170 DEGS. JUST AS I REACHED THE HDG HE WANTED ME BACK TO RWY HDG. I WAS UNAWARE OF THE SPECIFIC OPS ON THE 25 RWYS DUE TO DIFFERENT TWR FREQS; THUS A BIT SURPRISED OF THE GAR AND OTHER TFC. THE TWR DID NOT GIVE A REASON FOR THE GAR AND I FELT THE REASON AND PROC WAS A LITTLE ODD AS DID SOME OBSERVERS FROM ANOTHER JET; REFING AN AIR SHOW KIND OF EVENT; THAT I LATER LEARNED.

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.

An air carrier aircraft on las 19L short final was issued an ATC go around as another air carrier was departing runway 25.