|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||0001 To 0600|
|Locale Reference||airport : lax|
|Altitude||agl bound lower : 0|
agl bound upper : 1500
|Controlling Facilities||tracon : lax|
|Operator||common carrier : air carrier|
|Make Model Name||Widebody, Low Wing, 3 Turbojet Eng|
|Navigation In Use||Other|
|Flight Phase||descent : approach|
|Affiliation||company : air carrier|
|Function||flight crew : first officer|
|Qualification||pilot : atp|
pilot : cfi
pilot : instrument
pilot : commercial
|Experience||flight time last 90 days : 150|
flight time total : 5006
flight time type : 700
|Anomaly||inflight encounter : weather|
|Independent Detector||other flight crewa|
|Resolutory Action||none taken : anomaly accepted|
|Primary Problem||Flight Crew Human Performance|
|Air Traffic Incident||other|
While approaching lax, several ATC advisories told us that fog conditions at lax were making visibility go from more than a mi to 0 visibility and back to over a mi again over a period of several mins. Crew discussion revealed a lack of understanding in the cockpit about whether RVR minimums or only visibility minima applied to our ferry flight. It was determined that flight visibility at decision ht was the determining criteria for landing. RVR just prior to FAF was reported as 6000' approach end 6000+' midfield and 600' rollout. Visibility at DH was greater than 1/2 mi. The runway, approach light system, cl runway lights, red terminating bars and threshold markings were all visible and an uneventful landing was accomplished. Discussion prior to takeoff about applicable far's and takeoff and landing minimums for ferry flts (and all flts) would alleviate any confusion during final phases of flight.
Original NASA ASRS Text
Title: FO EXPRESSES CONFUSION ABOUT VISIBILITY MINIMUMS WHEN OPERATING A FERRY FLT.
Narrative: WHILE APCHING LAX, SEVERAL ATC ADVISORIES TOLD US THAT FOG CONDITIONS AT LAX WERE MAKING VISIBILITY GO FROM MORE THAN A MI TO 0 VISIBILITY AND BACK TO OVER A MI AGAIN OVER A PERIOD OF SEVERAL MINS. CREW DISCUSSION REVEALED A LACK OF UNDERSTANDING IN THE COCKPIT ABOUT WHETHER RVR MINIMUMS OR ONLY VISIBILITY MINIMA APPLIED TO OUR FERRY FLT. IT WAS DETERMINED THAT FLT VISIBILITY AT DECISION HT WAS THE DETERMINING CRITERIA FOR LNDG. RVR JUST PRIOR TO FAF WAS RPTED AS 6000' APCH END 6000+' MIDFIELD AND 600' ROLLOUT. VISIBILITY AT DH WAS GREATER THAN 1/2 MI. THE RWY, APCH LIGHT SYS, CL RWY LIGHTS, RED TERMINATING BARS AND THRESHOLD MARKINGS WERE ALL VISIBLE AND AN UNEVENTFUL LNDG WAS ACCOMPLISHED. DISCUSSION PRIOR TO TKOF ABOUT APPLICABLE FAR'S AND TKOF AND LNDG MINIMUMS FOR FERRY FLTS (AND ALL FLTS) WOULD ALLEVIATE ANY CONFUSION DURING FINAL PHASES OF FLT.
Data retrieved from NASA's ASRS site as of August 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.