Small aircraft pilot departs on occupied runway. Close encounter.

Attributes
ACN	129993
Time
Date	198911
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : 2v2
State Reference	CO
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	climbout : takeoff ground other : taxi
Flight Plan	None
Aircraft 2
Make Model Name	Small Aircraft
Flight Phase	ground other : taxi landing other
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time total : 680 flight time type : 60
ASRS Report	129993
Person 2
Affiliation	Other
Function	flight crew : single pilot
Events
Anomaly	conflict : ground critical non adherence : far other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Miss Distance	horizontal : 50 vertical : 250
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I landed at longmont airport (co), pulled off the runway to let plane #2 land since the C and west txwys were closed. Taxied to the east end of runway to prepare for takeoff. Other plane taxied to west end of runway and asked about taxiway being closed. I told him the only available taxiway was at east end of runway. I asked him if I could take off. He said, 'ok.' I did run-up and took off. During the time I did run-up, he taxied (I assume) about 1000' on the runway toward me (4000-5000' sep). I took off over him when he was on the left (south) side of the runway. There was no problem of safety, but I found it quite disconcerting to see him 1000' east of his end of the runway. My conclusions: 1) I should have waited for him to taxi back down the runway 5000-6000' and then taken off. 2) never trust anyone, particularly people who are unfamiliar with the airport or closures.

Original NASA ASRS Text

Title: SMA PLT DEPARTS ON OCCUPIED RWY. CLOSE ENCOUNTER.

Narrative: I LANDED AT LONGMONT ARPT (CO), PULLED OFF THE RWY TO LET PLANE #2 LAND SINCE THE C AND W TXWYS WERE CLOSED. TAXIED TO THE E END OF RWY TO PREPARE FOR TKOF. OTHER PLANE TAXIED TO W END OF RWY AND ASKED ABOUT TXWY BEING CLOSED. I TOLD HIM THE ONLY AVAILABLE TXWY WAS AT E END OF RWY. I ASKED HIM IF I COULD TAKE OFF. HE SAID, 'OK.' I DID RUN-UP AND TOOK OFF. DURING THE TIME I DID RUN-UP, HE TAXIED (I ASSUME) ABOUT 1000' ON THE RWY TOWARD ME (4000-5000' SEP). I TOOK OFF OVER HIM WHEN HE WAS ON THE LEFT (S) SIDE OF THE RWY. THERE WAS NO PROB OF SAFETY, BUT I FOUND IT QUITE DISCONCERTING TO SEE HIM 1000' E OF HIS END OF THE RWY. MY CONCLUSIONS: 1) I SHOULD HAVE WAITED FOR HIM TO TAXI BACK DOWN THE RWY 5000-6000' AND THEN TAKEN OFF. 2) NEVER TRUST ANYONE, PARTICULARLY PEOPLE WHO ARE UNFAMILIAR WITH THE ARPT OR CLOSURES.

Data retrieved from NASA's ASRS site as of August 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.