Tower advised RVR had dropped below takeoff mins as medium large transport was accelerating. Captain elected to continue takeoff. Lifted off before reaching middle RVR area.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	194828
Time
Date	199111
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sea
State Reference	WA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp pilot : commercial pilot : instrument
Experience	flight time last 90 days : 100 flight time total : 13000 flight time type : 700
ASRS Report	194828
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : atp
Events
Anomaly	non adherence : far non adherence : published procedure other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

On runway 34L at sea, awaiting takeoff clearance, RVR touchdown 6000 (we could see downtown sea). RVR midfield and rollout 700 (fog bank). After takeoff clearance and while accelerating, tower advised us that midfield RVR dropped to 400 making takeoff illegal. I continued with takeoff since I knew we would be airborne before reaching fog bank, and we were. Had I aborted takeoff, rollout would have been into fog bank. Airplane was always in VMC.

Original NASA ASRS Text

Title: TWR ADVISED RVR HAD DROPPED BELOW TKOF MINS AS MLG WAS ACCELERATING. CAPT ELECTED TO CONTINUE TKOF. LIFTED OFF BEFORE REACHING MIDDLE RVR AREA.

Narrative: ON RWY 34L AT SEA, AWAITING TKOF CLRNC, RVR TOUCHDOWN 6000 (WE COULD SEE DOWNTOWN SEA). RVR MIDFIELD AND ROLLOUT 700 (FOG BANK). AFTER TKOF CLRNC AND WHILE ACCELERATING, TWR ADVISED US THAT MIDFIELD RVR DROPPED TO 400 MAKING TKOF ILLEGAL. I CONTINUED WITH TKOF SINCE I KNEW WE WOULD BE AIRBORNE BEFORE REACHING FOG BANK, AND WE WERE. HAD I ABORTED TKOF, ROLLOUT WOULD HAVE BEEN INTO FOG BANK. AIRPLANE WAS ALWAYS IN VMC.

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.