A319 captain reported experiencing an uncontrolled turn to the right during single engine taxi as th...

Attributes
ACN	1462847
Time
Date	201707
Local Time Of Day	0601-1200
Place
Locale Reference	PHL.Airport
State Reference	PA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	A319
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Total 13433 Flight Crew Type 12160
Events
Anomaly	Ground Event / Encounter Loss Of Aircraft Control

Narrative:

During single-engine taxi (wet taxiways); we were holding short of runway 27R on taxiway echo facing south. ATC cleared us to cross runway 27R. When power was applied to the number 1 engine; a delay occurred in engine spool-up. When the aircraft started to move forward; it suddenly veered right. Nose wheel steering input could not stop the right turning moment; so the number 1 throttle was retarded and the aircraft was stopped. The nose was now past the runway hold short line by several feet and ATC was notified of this. The number 2 engine was started and taxi clearance was requested and granted to cross runway 27R. Taxi to the takeoff runway (27L) was normal; and nose wheel steering functioned normally. The rest of the flight was uneventful.

Original NASA ASRS Text

Title: A319 Captain reported experiencing an uncontrolled turn to the right during single engine taxi as thrust was increased to taxi across an active runway.

Narrative: During single-engine taxi (wet taxiways); we were holding short of Runway 27R on taxiway Echo facing south. ATC cleared us to cross runway 27R. When power was applied to the number 1 engine; a delay occurred in engine spool-up. When the aircraft started to move forward; it suddenly veered right. Nose wheel steering input could not stop the right turning moment; so the number 1 throttle was retarded and the aircraft was stopped. The nose was now past the runway hold short line by several feet and ATC was notified of this. The number 2 engine was started and taxi clearance was requested and granted to cross runway 27R. Taxi to the takeoff runway (27L) was normal; and nose wheel steering functioned normally. The rest of the flight was uneventful.

Data retrieved from NASA's ASRS site 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.

A319 captain reported experiencing an uncontrolled turn to the right during single engine taxi as thrust was increased to taxi across an active runway.