Air carrier cargo captain made a takeoff below minimums at den.

Attributes
ACN	521053
Time
Date	200108
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : den.airport
State Reference	CO
Altitude	agl single value : 0
Environment
Flight Conditions	IMC
Weather Elements	Fog
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : multi engine pilot : cfi
Experience	flight time last 90 days : 60 flight time total : 8000 flight time type : 3000
ASRS Report	521053
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	inflight encounter : weather non adherence : published procedure non adherence : far non adherence : company policies other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Flight Crew Human Performance Weather
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

In training, we have been given takeoffs at 500 ft RVR to qualify us for 500 ft RVR takeoffs. It has been my understanding that since we are trained for CAT I approachs to 1800 ft RVR, if the approach plate says 2400 ft RVR we can still do it down to 1800 ft RVR. Therefore, since we have just been trained for 500 ft RVR takeoffs, we could do a takeoff at 500 ft RVR even if the plate says 600 ft RVR.

Original NASA ASRS Text

Title: ACR CARGO CAPT MADE A TKOF BELOW MINIMUMS AT DEN.

Narrative: IN TRAINING, WE HAVE BEEN GIVEN TKOFS AT 500 FT RVR TO QUALIFY US FOR 500 FT RVR TKOFS. IT HAS BEEN MY UNDERSTANDING THAT SINCE WE ARE TRAINED FOR CAT I APCHS TO 1800 FT RVR, IF THE APCH PLATE SAYS 2400 FT RVR WE CAN STILL DO IT DOWN TO 1800 FT RVR. THEREFORE, SINCE WE HAVE JUST BEEN TRAINED FOR 500 FT RVR TKOFS, WE COULD DO A TKOF AT 500 FT RVR EVEN IF THE PLATE SAYS 600 FT RVR.

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.