A commuter aircraft flight crew may have inadvertently crossed the runway hold short line.

Attributes
ACN	568946
Time
Date	200212
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : stl.airport
State Reference	MO
Altitude	agl single value : 0
Environment
Flight Conditions	IMC
Weather Elements	other
Light	Night
Aircraft 1
Operator	common carrier : air taxi
Make Model Name	Light Transport, Low Wing, 2 Turbojet Eng
Operating Under FAR Part	Part 135
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 190 flight time total : 4700 flight time type : 2288
ASRS Report	568946
Person 2
Affiliation	company : air taxi
Function	flight crew : first officer
Qualification	pilot : commercial pilot : cfi pilot : atp pilot : flight engineer pilot : instrument pilot : multi engine
Experience	flight time last 90 days : 85 flight time total : 4725 flight time type : 85
ASRS Report	568787
Events
Anomaly	incursion : runway non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : anomaly accepted
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

After landing at stl, we were given a clearance to taxi down runway 13, turn left on taxiway B and hold short of runway 12L on taxiway B. We complied. While holding short, ground control asked us whether or not we were holding short of runway 12L on taxiway B. We responded that we were holding short of runway 12L at taxiway B. We were then cleared across runway 12L, and to hold short of runway 12R on taxiway B. We complied. We were then cleared to cross runway 12R and to taxi to the ramp. During our taxi, we were asked to call the tower. I called the tower and talked to the tower supervisor. He asked again if we were holding short of runway 12L on taxiway B. I told him that we were holding short there. He said that they had looked out and thought that we may have been across the hold short line. He then said that maybe they had an equipment malfunction of some sort, and that he would check into it. That ended our conversation. I felt that we were, in fact, holding short correctly. We were aware that runway 12L was being used as an active runway. If, in fact, we were across the hold short line, it was an error on my part and can only be due to a perception angle from the cockpit or possibly the unfamiliar position that we were on at the airport. I have reviewed that report diagram again, and found that position as a hot spot at the stl airport.

Original NASA ASRS Text

Title: A COMMUTER ACFT FLT CREW MAY HAVE INADVERTENTLY CROSSED THE RWY HOLD SHORT LINE.

Narrative: AFTER LNDG AT STL, WE WERE GIVEN A CLRNC TO TAXI DOWN RWY 13, TURN L ON TXWY B AND HOLD SHORT OF RWY 12L ON TXWY B. WE COMPLIED. WHILE HOLDING SHORT, GND CTL ASKED US WHETHER OR NOT WE WERE HOLDING SHORT OF RWY 12L ON TXWY B. WE RESPONDED THAT WE WERE HOLDING SHORT OF RWY 12L AT TXWY B. WE WERE THEN CLRED ACROSS RWY 12L, AND TO HOLD SHORT OF RWY 12R ON TXWY B. WE COMPLIED. WE WERE THEN CLRED TO CROSS RWY 12R AND TO TAXI TO THE RAMP. DURING OUR TAXI, WE WERE ASKED TO CALL THE TWR. I CALLED THE TWR AND TALKED TO THE TWR SUPVR. HE ASKED AGAIN IF WE WERE HOLDING SHORT OF RWY 12L ON TXWY B. I TOLD HIM THAT WE WERE HOLDING SHORT THERE. HE SAID THAT THEY HAD LOOKED OUT AND THOUGHT THAT WE MAY HAVE BEEN ACROSS THE HOLD SHORT LINE. HE THEN SAID THAT MAYBE THEY HAD AN EQUIP MALFUNCTION OF SOME SORT, AND THAT HE WOULD CHK INTO IT. THAT ENDED OUR CONVERSATION. I FELT THAT WE WERE, IN FACT, HOLDING SHORT CORRECTLY. WE WERE AWARE THAT RWY 12L WAS BEING USED AS AN ACTIVE RWY. IF, IN FACT, WE WERE ACROSS THE HOLD SHORT LINE, IT WAS AN ERROR ON MY PART AND CAN ONLY BE DUE TO A PERCEPTION ANGLE FROM THE COCKPIT OR POSSIBLY THE UNFAMILIAR POS THAT WE WERE ON AT THE ARPT. I HAVE REVIEWED THAT RPT DIAGRAM AGAIN, AND FOUND THAT POS AS A HOT SPOT AT THE STL ARPT.

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.