A near unauthorized runway entry, runway transgression. Readback hearback problem.

Attributes
ACN	317530
Time
Date	199510
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : phl
State Reference	PA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : cid
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	ground : holding ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 24000 flight time type : 10000
ASRS Report	317530
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	incursion : runway non adherence : published procedure non adherence : far non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	other
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We had cleared runway 09R, with instructions to hold short of runway 09L on taxiway M. While on taxiway M, local control issued instructions to 'cross runway 09L if you'd like.' first officer repeated the instruction to cross, which acknowledgement was not answered. I thought the clearance rather odd, and slowed down, but continued to taxi. Looking to my left, I saw landing lights at the approach end of runway 09L, which I took to be an aircraft holding in position. We had now crossed the hold-short line. The controller now, urgently, issued 'hold short' instructions, with which I complied. In the subsequent telephone conversation with the tower supervisor, she said she was investigating a possible runway incursion. I relayed our perception of what had occurred, and asked her to review the tapes. On a later trip through phl later the same day, I spoke with a different supervisor, who told me that the tapes had been reviewed, and the decision made that this had been a 'non-event.'

Original NASA ASRS Text

Title: A NEAR UNAUTH RWY ENTRY, RWY TRANSGRESSION. READBACK HEARBACK PROB.

Narrative: WE HAD CLRED RWY 09R, WITH INSTRUCTIONS TO HOLD SHORT OF RWY 09L ON TXWY M. WHILE ON TXWY M, LCL CTL ISSUED INSTRUCTIONS TO 'CROSS RWY 09L IF YOU'D LIKE.' FO REPEATED THE INSTRUCTION TO CROSS, WHICH ACKNOWLEDGEMENT WAS NOT ANSWERED. I THOUGHT THE CLRNC RATHER ODD, AND SLOWED DOWN, BUT CONTINUED TO TAXI. LOOKING TO MY L, I SAW LNDG LIGHTS AT THE APCH END OF RWY 09L, WHICH I TOOK TO BE AN ACFT HOLDING IN POS. WE HAD NOW CROSSED THE HOLD-SHORT LINE. THE CTLR NOW, URGENTLY, ISSUED 'HOLD SHORT' INSTRUCTIONS, WITH WHICH I COMPLIED. IN THE SUBSEQUENT TELEPHONE CONVERSATION WITH THE TWR SUPVR, SHE SAID SHE WAS INVESTIGATING A POSSIBLE RWY INCURSION. I RELAYED OUR PERCEPTION OF WHAT HAD OCCURRED, AND ASKED HER TO REVIEW THE TAPES. ON A LATER TRIP THROUGH PHL LATER THE SAME DAY, I SPOKE WITH A DIFFERENT SUPVR, WHO TOLD ME THAT THE TAPES HAD BEEN REVIEWED, AND THE DECISION MADE THAT THIS HAD BEEN A 'NON-EVENT.'

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.