B757 took off when braking action nil was reported.

Attributes
ACN	354131
Time
Date	199611
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : msp
State Reference	MN
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	tower : dfw
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : atp
Experience	flight time last 90 days : 200 flight time total : 11000 flight time type : 1000
ASRS Report	354131
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : far non adherence : published procedure
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:

While taxiing for takeoff, runway braking was reported as poor by landing aircraft. Before takeoff, airport saab reported surface friction on runway as .17 mu. Below .18 mu is nil braking. Captain decided to takeoff anyway to make landing curfew at destination airport.

Original NASA ASRS Text

Title: B757 TOOK OFF WHEN BRAKING ACTION NIL WAS RPTED.

Narrative: WHILE TAXIING FOR TKOF, RWY BRAKING WAS RPTED AS POOR BY LNDG ACFT. BEFORE TKOF, ARPT SAAB RPTED SURFACE FRICTION ON RWY AS .17 MU. BELOW .18 MU IS NIL BRAKING. CAPT DECIDED TO TKOF ANYWAY TO MAKE LNDG CURFEW AT DEST ARPT.

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.