GA pilot distracted by door opening on takeoff lands gear up at ril.

Attributes
ACN	146764
Time
Date	199005
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : ril
State Reference	CO
Altitude	agl bound lower : 0 agl bound upper : 500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	landing other other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 8 flight time total : 496 flight time type : 471
ASRS Report	146764
Person 2
Affiliation	Other
Function	observation : passenger
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Shortly after departing ril the passenger door popped open. I continued climbing in the pattern to the field and closed the door. The density altitude was about 8000' at the time and to improve climb performance the gear was raised. On final I lowered flaps but neglected the gear and made a gear up landing. Contributing factors: there was quite a bit of noise from the open door. I was wearing a headset which cut out quite a bit of the noise, but also masked the gear warning horn. Between the considerable wind noise, and the attenuation caused by the headset. I thought the gear horn was the marker beacon receiver going off. As I was thinking, 'gee, I didn't know this field had a marker,' the plane settled onto the runway.

Original NASA ASRS Text

Title: GA PLT DISTRACTED BY DOOR OPENING ON TKOF LANDS GEAR UP AT RIL.

Narrative: SHORTLY AFTER DEPARTING RIL THE PAX DOOR POPPED OPEN. I CONTINUED CLBING IN THE PATTERN TO THE FIELD AND CLOSED THE DOOR. THE DENSITY ALT WAS ABOUT 8000' AT THE TIME AND TO IMPROVE CLB PERFORMANCE THE GEAR WAS RAISED. ON FINAL I LOWERED FLAPS BUT NEGLECTED THE GEAR AND MADE A GEAR UP LNDG. CONTRIBUTING FACTORS: THERE WAS QUITE A BIT OF NOISE FROM THE OPEN DOOR. I WAS WEARING A HEADSET WHICH CUT OUT QUITE A BIT OF THE NOISE, BUT ALSO MASKED THE GEAR WARNING HORN. BTWN THE CONSIDERABLE WIND NOISE, AND THE ATTENUATION CAUSED BY THE HEADSET. I THOUGHT THE GEAR HORN WAS THE MARKER BEACON RECEIVER GOING OFF. AS I WAS THINKING, 'GEE, I DIDN'T KNOW THIS FIELD HAD A MARKER,' THE PLANE SETTLED ONTO THE RWY.

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.