Air carrier large transport may or may not have exceeded downwind landing limit.

Attributes
ACN	144876
Time
Date	199005
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : las
State Reference	NV
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 100 flight time total : 3500 flight time type : 700
ASRS Report	144876
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : far
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Las was landing runway 1. Wind was reported on approach as '050 at 12' by tower. Captain asked for runway 25. Tower said, 'are you sure?' captain said yes. I said, 'are you sure that's not more than a 10 KT tailwind.' he said, 'if not, it's close--and we're light anyway.' on final approach to runway 25, tower called out wind at '040 at 12.' upon landing I pulled out crosswind chart. It showed we had an actual tailwind of 10.1 KTS, .1 KT over the limit. Nothing will probably come of this, but I thought I'd send a NASA form in anyway. Since we were on approach, the wind was close to the limit, I felt it more prudent not to debate it under those conditions. I did get the captain to agree that if the wind was reported more unfavorable than 050 at 12 at anytime during the approach, we would go around.

Original NASA ASRS Text

Title: ACR LGT MAY OR MAY NOT HAVE EXCEEDED DOWNWIND LNDG LIMIT.

Narrative: LAS WAS LNDG RWY 1. WIND WAS RPTED ON APCH AS '050 AT 12' BY TWR. CAPT ASKED FOR RWY 25. TWR SAID, 'ARE YOU SURE?' CAPT SAID YES. I SAID, 'ARE YOU SURE THAT'S NOT MORE THAN A 10 KT TAILWIND.' HE SAID, 'IF NOT, IT'S CLOSE--AND WE'RE LIGHT ANYWAY.' ON FINAL APCH TO RWY 25, TWR CALLED OUT WIND AT '040 AT 12.' UPON LNDG I PULLED OUT XWIND CHART. IT SHOWED WE HAD AN ACTUAL TAILWIND OF 10.1 KTS, .1 KT OVER THE LIMIT. NOTHING WILL PROBABLY COME OF THIS, BUT I THOUGHT I'D SEND A NASA FORM IN ANYWAY. SINCE WE WERE ON APCH, THE WIND WAS CLOSE TO THE LIMIT, I FELT IT MORE PRUDENT NOT TO DEBATE IT UNDER THOSE CONDITIONS. I DID GET THE CAPT TO AGREE THAT IF THE WIND WAS RPTED MORE UNFAVORABLE THAN 050 AT 12 AT ANYTIME DURING THE APCH, WE WOULD GO AROUND.

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.