Takeoff below authorized minimums.

Attributes
ACN	114379
Time
Date	198906
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : phl
State Reference	PA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : private pilot : instrument pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 170 flight time total : 8000 flight time type : 3000
ASRS Report	114379
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 300 flight time total : 8000 flight time type : 1000
ASRS Report	114407
Events
Anomaly	non adherence : far 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

Narrative:

Cleared for takeoff by kphl tower on runway 09L when visibility reported by ATIS 1/8 mi. I did not realize that 09L at kphl had no transmissometers and requires 1/4 mi visibility. Actual visibility on runway was between 3500-4000' (using runway remaining markers). RVR reported by tower to landing aircraft on 09R to be 3500-4000'. Since we had been cleared by tower for takeoff, I did not question their call, not realizing that no transmissometers were installed on 09L. I believe controllers should be brought into the loop on takeoff mins especially in situations when 2 parallel runways exist and only one has appropriate equipment for low visibility takeoff. Supplemental information from acn 114407: I then asked the captain (it was his leg) if he wanted me to check to see if we were legal for 9L. He said no, he 'could see 3000'.'

Original NASA ASRS Text

Title: TKOF BELOW AUTHORIZED MINIMUMS.

Narrative: CLRED FOR TKOF BY KPHL TWR ON RWY 09L WHEN VISIBILITY REPORTED BY ATIS 1/8 MI. I DID NOT REALIZE THAT 09L AT KPHL HAD NO TRANSMISSOMETERS AND REQUIRES 1/4 MI VISIBILITY. ACTUAL VISIBILITY ON RWY WAS BETWEEN 3500-4000' (USING RWY REMAINING MARKERS). RVR REPORTED BY TWR TO LNDG ACFT ON 09R TO BE 3500-4000'. SINCE WE HAD BEEN CLRED BY TWR FOR TKOF, I DID NOT QUESTION THEIR CALL, NOT REALIZING THAT NO TRANSMISSOMETERS WERE INSTALLED ON 09L. I BELIEVE CTLRS SHOULD BE BROUGHT INTO THE LOOP ON TKOF MINS ESPECIALLY IN SITUATIONS WHEN 2 PARALLEL RWYS EXIST AND ONLY ONE HAS APPROPRIATE EQUIPMENT FOR LOW VISIBILITY TKOF. SUPPLEMENTAL INFORMATION FROM ACN 114407: I THEN ASKED THE CAPT (IT WAS HIS LEG) IF HE WANTED ME TO CHECK TO SEE IF WE WERE LEGAL FOR 9L. HE SAID NO, HE 'COULD SEE 3000'.'

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.