C182 departure from mtp enters runway with cessna departing from opposite end.

Attributes
ACN	587972
Time
Date	200307
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mtp.airport
State Reference	NY
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	ground : taxi
Flight Plan	None
Aircraft 2
Operator	general aviation : personal
Make Model Name	Cessna Aircraft Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	climbout : takeoff ground : takeoff roll
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : private
Experience	flight time last 90 days : 18 flight time total : 850 flight time type : 735
ASRS Report	587972
Person 2
Affiliation	other
Function	flight crew : single pilot
Events
Anomaly	conflict : ground less severe incursion : runway non adherence : far
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Miss Distance	horizontal : 2000
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was taxiing off the ramp at montauk (mtp) to go to the taxiway. It was a busy day and planes were parked on the borderline of the ramp and runway. Thinking I was still on the ramp, I inadvertently taxied onto the runway while a cessna was taking off from the other end. There was no risk of collision due to distance between planes and cessna's liftoff in less than 1/2 runway length. I heard cessna announce departure, but I assumed I was on the ramp or taxiway entrance when I commenced my taxi. I'm not sure if the ramp/runway intersection is properly marked -- if it is, I clearly missed it. Also, not sure aircraft should be allowed to park so close to runway, with no clear path to taxiway. It was a short distance (2 plane lengths) to taxiway, I was not on the runway for 30 seconds. I failed to recognize end of ramp -- beginning of runway. I was not in a hurry, I just don't think it's marked properly. I'll check next time I go out there.

Original NASA ASRS Text

Title: C182 DEP FROM MTP ENTERS RWY WITH CESSNA DEPARTING FROM OPPOSITE END.

Narrative: I WAS TAXIING OFF THE RAMP AT MONTAUK (MTP) TO GO TO THE TXWY. IT WAS A BUSY DAY AND PLANES WERE PARKED ON THE BORDERLINE OF THE RAMP AND RWY. THINKING I WAS STILL ON THE RAMP, I INADVERTENTLY TAXIED ONTO THE RWY WHILE A CESSNA WAS TAKING OFF FROM THE OTHER END. THERE WAS NO RISK OF COLLISION DUE TO DISTANCE BTWN PLANES AND CESSNA'S LIFTOFF IN LESS THAN 1/2 RWY LENGTH. I HEARD CESSNA ANNOUNCE DEP, BUT I ASSUMED I WAS ON THE RAMP OR TXWY ENTRANCE WHEN I COMMENCED MY TAXI. I'M NOT SURE IF THE RAMP/RWY INTXN IS PROPERLY MARKED -- IF IT IS, I CLRLY MISSED IT. ALSO, NOT SURE ACFT SHOULD BE ALLOWED TO PARK SO CLOSE TO RWY, WITH NO CLR PATH TO TXWY. IT WAS A SHORT DISTANCE (2 PLANE LENGTHS) TO TXWY, I WAS NOT ON THE RWY FOR 30 SECONDS. I FAILED TO RECOGNIZE END OF RAMP -- BEGINNING OF RWY. I WAS NOT IN A HURRY, I JUST DON'T THINK IT'S MARKED PROPERLY. I'LL CHK NEXT TIME I GO OUT THERE.

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.