B717 flight crew issued runway crossing clearance with PA31 on departure roll at phl.

Attributes
ACN	611113
Time
Date	200403
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : phl.airport
State Reference	PA
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : iad.tower
Operator	common carrier : air carrier
Make Model Name	B717 (Formerly MD-95)
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : phl.tower
Make Model Name	PA-31 Navajo Chieftan/Mojave/Navajo T1020
Operating Under FAR Part	Part 91
Flight Phase	climbout : takeoff ground : taxi ground : takeoff roll
Person 1
Affiliation	company : air carrier
Function	flight crew : captain
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 10 flight time total : 9000 flight time type : 10
ASRS Report	611113
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer observation : company check pilot oversight : pic
Events
Anomaly	conflict : ground less severe incursion : runway non adherence : published procedure non adherence : required legal separation
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance flight crew : took precautionary avoidance action
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Intra Facility Coordination Failure Operational Error

Narrative:

While taxiing from gate at phl to runway 27R we were initially instructed by ground to 'taxi to runway 27R via taxiway H, hold short of runway 35 on taxiway H.' we were subsequently instructed by ground to 'cross runway 35, taxi to runway 27R.' while approaching runway 35 on taxiway H we observed a twin engine navajo taxi onto runway 35 at taxiway south or taxiway K. The navajo appeared to be in taxi mode but then it became apparent the navajo was taking off on runway 35. We made a stop on taxiway H prior to entering runway 35, but past the hold short line. We queried ground and were reclred to continue our taxi to runway 27R. Ground subsequently said it was not our fault.

Original NASA ASRS Text

Title: B717 FLT CREW ISSUED RWY XING CLRNC WITH PA31 ON DEP ROLL AT PHL.

Narrative: WHILE TAXIING FROM GATE AT PHL TO RWY 27R WE WERE INITIALLY INSTRUCTED BY GND TO 'TAXI TO RWY 27R VIA TXWY H, HOLD SHORT OF RWY 35 ON TXWY H.' WE WERE SUBSEQUENTLY INSTRUCTED BY GND TO 'CROSS RWY 35, TAXI TO RWY 27R.' WHILE APCHING RWY 35 ON TXWY H WE OBSERVED A TWIN ENG NAVAJO TAXI ONTO RWY 35 AT TXWY S OR TXWY K. THE NAVAJO APPEARED TO BE IN TAXI MODE BUT THEN IT BECAME APPARENT THE NAVAJO WAS TAKING OFF ON RWY 35. WE MADE A STOP ON TXWY H PRIOR TO ENTERING RWY 35, BUT PAST THE HOLD SHORT LINE. WE QUERIED GND AND WERE RECLRED TO CONTINUE OUR TAXI TO RWY 27R. GND SUBSEQUENTLY SAID IT WAS NOT OUR FAULT.

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.