Taxiway excursion during ramp operation pushback.

Attributes
ACN	274505
Time
Date	199406
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : msy
State Reference	LA
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	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : atp
Experience	flight time last 90 days : 150 flight time total : 4000 flight time type : 400
ASRS Report	274505
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : atp
Experience	flight time last 90 days : 140 flight time total : 3000 flight time type : 480
ASRS Report	273207
Events
Anomaly	non adherence : far non adherence other other anomaly other other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Air Traffic Incident	Pilot Deviation
Situations
Airport	other physical facility

Narrative:

On pwrback guideman did not signal aircraft to move forward in time to prevent left main mount from going off taxiway. Neither wing walkers had noticed that the aircraft was off the taxiway. Air crew was unaware of position of wheel until power was applied and no forward movement was noticed. Guidemen were totally incompetent in their situational awareness. Supplemental information from acn 273207: wing walkers were used and did not signal guideman of proximity of the edge of pavement. No damage. Aircraft brought back onto pavement under own power. Inspected and released for flight.

Original NASA ASRS Text

Title: TXWY EXCURSION DURING RAMP OP PUSHBACK.

Narrative: ON PWRBACK GUIDEMAN DID NOT SIGNAL ACFT TO MOVE FORWARD IN TIME TO PREVENT L MAIN MOUNT FROM GOING OFF TXWY. NEITHER WING WALKERS HAD NOTICED THAT THE ACFT WAS OFF THE TXWY. AIR CREW WAS UNAWARE OF POS OF WHEEL UNTIL PWR WAS APPLIED AND NO FORWARD MOVEMENT WAS NOTICED. GUIDEMEN WERE TOTALLY INCOMPETENT IN THEIR SITUATIONAL AWARENESS. SUPPLEMENTAL INFO FROM ACN 273207: WING WALKERS WERE USED AND DID NOT SIGNAL GUIDEMAN OF PROX OF THE EDGE OF PAVEMENT. NO DAMAGE. ACFT BROUGHT BACK ONTO PAVEMENT UNDER OWN PWR. INSPECTED AND RELEASED FOR FLT.

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.