Reporter dumped fuel on taxiway while transferring fuel and taxiing.

Attributes
ACN	287605
Time
Date	199411
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : teb
State Reference	NJ
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Night
Aircraft 1
Controlling Facilities	artcc : zid
Operator	common carrier : air taxi
Make Model Name	Learjet 36
Operating Under FAR Part	Part 135
Flight Phase	ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : commercial pilot : instrument pilot : atp
Experience	flight time last 90 days : 200 flight time total : 11300 flight time type : 1500
ASRS Report	287605
Person 2
Affiliation	company : air taxi
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	other anomaly other
Independent Detector	other other : unspecified cockpit
Resolutory Action	flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

The aircraft is lear-36, it has a fuel dump switch. In all but the earliest lr-35/36's, that switch is 'guarded,' to prevent inadvertent dumping. (Can you see what's coming?) somewhere in the process of transferring fuel forward (from fuselage tanks to wings) and/or while 'balancing' fuel (transferring fuel from 1 wing to the other), I must've opened the dump switch. I spilled about 35 gallons of fuel, along 3500 ft of taxiway. Is there an 'airworthiness directive' or 'service bulletin' that applies to the dump switches in these earliest lear-30 series birds? 'Remove/replace pilot system.'

Original NASA ASRS Text

Title: RPTR DUMPED FUEL ON TXWY WHILE TRANSFERRING FUEL AND TAXIING.

Narrative: THE ACFT IS LEAR-36, IT HAS A FUEL DUMP SWITCH. IN ALL BUT THE EARLIEST LR-35/36'S, THAT SWITCH IS 'GUARDED,' TO PREVENT INADVERTENT DUMPING. (CAN YOU SEE WHAT'S COMING?) SOMEWHERE IN THE PROCESS OF TRANSFERRING FUEL FORWARD (FROM FUSELAGE TANKS TO WINGS) AND/OR WHILE 'BALANCING' FUEL (TRANSFERRING FUEL FROM 1 WING TO THE OTHER), I MUST'VE OPENED THE DUMP SWITCH. I SPILLED ABOUT 35 GALLONS OF FUEL, ALONG 3500 FT OF TXWY. IS THERE AN 'AIRWORTHINESS DIRECTIVE' OR 'SVC BULLETIN' THAT APPLIES TO THE DUMP SWITCHES IN THESE EARLIEST LEAR-30 SERIES BIRDS? 'REMOVE/REPLACE PLT SYS.'

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.