PA31 pilot taxiing for departure at mdt crossed hold lines for runway 31.

Attributes
ACN	632940
Time
Date	200410
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mdt.airport
State Reference	PA
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : corporate
Make Model Name	PA-31 Navajo Chieftan/Mojave/Navajo T1020
Operating Under FAR Part	Part 91
Flight Phase	ground : holding ground : taxi
Flight Plan	None
Person 1
Affiliation	company : corporate
Function	flight crew : single pilot
Person 2
Affiliation	government : faa
Function	controller : local
Events
Anomaly	non adherence : published procedure
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance
Supplementary
Problem Areas	Airport Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was cleared by ground control to taxi from the GA ramp to runway 31. As I was approaching taxiway F on taxiway a, I saw a DHC8 stopped at the bend in the taxiway before runway 31, (where I presumed to hold short line to be) not realizing that the hold short line was actually immediately following taxiway F, so I continued taxiing to the spot where I presumed the hold short line to be, (past the actual hold line). Ground control asked me to hold my position as I was becoming aware of the error I had made, and contact tower. I contacted tower, and asked them if they would like me to make a 180 degrees on the taxiway as I had missed the hold short line and they said it would not be necessary. The problem arose because I had a preconceived idea of where the hold short line should be. A contributing factor as the military ramp, with special operations C130's that caught my attention right where the hold short lines area. I discovered the problem when I was approaching the turn in the taxiway to see no hold short lines ahead, so I realized they must be behind me. I will correct this action by never presuming where hold short lines are again, but I also feel that ground control should point out non standard hold points verbally.

Original NASA ASRS Text

Title: PA31 PLT TAXIING FOR DEP AT MDT CROSSED HOLD LINES FOR RWY 31.

Narrative: I WAS CLRED BY GND CTL TO TAXI FROM THE GA RAMP TO RWY 31. AS I WAS APCHING TXWY F ON TXWY A, I SAW A DHC8 STOPPED AT THE BEND IN THE TXWY BEFORE RWY 31, (WHERE I PRESUMED TO HOLD SHORT LINE TO BE) NOT REALIZING THAT THE HOLD SHORT LINE WAS ACTUALLY IMMEDIATELY FOLLOWING TXWY F, SO I CONTINUED TAXIING TO THE SPOT WHERE I PRESUMED THE HOLD SHORT LINE TO BE, (PAST THE ACTUAL HOLD LINE). GND CTL ASKED ME TO HOLD MY POS AS I WAS BECOMING AWARE OF THE ERROR I HAD MADE, AND CONTACT TWR. I CONTACTED TWR, AND ASKED THEM IF THEY WOULD LIKE ME TO MAKE A 180 DEGS ON THE TXWY AS I HAD MISSED THE HOLD SHORT LINE AND THEY SAID IT WOULD NOT BE NECESSARY. THE PROB AROSE BECAUSE I HAD A PRECONCEIVED IDEA OF WHERE THE HOLD SHORT LINE SHOULD BE. A CONTRIBUTING FACTOR AS THE MIL RAMP, WITH SPECIAL OPS C130'S THAT CAUGHT MY ATTN RIGHT WHERE THE HOLD SHORT LINES AREA. I DISCOVERED THE PROB WHEN I WAS APCHING THE TURN IN THE TXWY TO SEE NO HOLD SHORT LINES AHEAD, SO I REALIZED THEY MUST BE BEHIND ME. I WILL CORRECT THIS ACTION BY NEVER PRESUMING WHERE HOLD SHORT LINES ARE AGAIN, BUT I ALSO FEEL THAT GND CTL SHOULD POINT OUT NON STANDARD HOLD POINTS VERBALLY.

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.