Flight crew fails to return to ramp after disconnecting one generator CSD on taxi-out.

Attributes
ACN	174642
Time
Date	199104
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : iah
State Reference	TX
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zoa
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : cfi pilot : atp
Experience	flight time last 90 days : 210 flight time total : 9000 flight time type : 5000
ASRS Report	174642
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi
Experience	flight time last 90 days : 40 flight time total : 7200 flight time type : 1100
ASRS Report	174517
Events
Anomaly	aircraft equipment problem : critical non adherence : far non adherence : published procedure other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified 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:

On taxi-out, had a gen field and breaker light come on. Operating manual says to disconnect CSD. We disconnected, making the gen inoperative. After takeoff, looking at MEL it said we were not allowed to placard gen inoperative. We should have read MEL on ground and taxied back in and had maintenance placard gen. Supplemental information from acn 174788: there was a great desire to continue with our on-time performance for the sequence, especially with this 'kick off' flight, and we overlooked basic written guidance.

Original NASA ASRS Text

Title: FLT CREW FAILS TO RETURN TO RAMP AFTER DISCONNECTING ONE GENERATOR CSD ON TAXI-OUT.

Narrative: ON TAXI-OUT, HAD A GEN FIELD AND BREAKER LIGHT COME ON. OPERATING MANUAL SAYS TO DISCONNECT CSD. WE DISCONNECTED, MAKING THE GEN INOP. AFTER TKOF, LOOKING AT MEL IT SAID WE WERE NOT ALLOWED TO PLACARD GEN INOP. WE SHOULD HAVE READ MEL ON GND AND TAXIED BACK IN AND HAD MAINT PLACARD GEN. SUPPLEMENTAL INFO FROM ACN 174788: THERE WAS A GREAT DESIRE TO CONTINUE WITH OUR ON-TIME PERFORMANCE FOR THE SEQUENCE, ESPECIALLY WITH THIS 'KICK OFF' FLT, AND WE OVERLOOKED BASIC WRITTEN GUIDANCE.

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.