Landing gear door fell off aircraft.

Attributes
ACN	93126
Time
Date	198808
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : mem airport : meme
State Reference	TN
Altitude	msl bound lower : 800 msl bound upper : 800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : mem
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 4100
ASRS Report	93126
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

First officer's leg coming into memphis int'l. On final approach first officer called for gear at OM. I called 'gear speed check (160) gear select down vle = 164.' I didn't notice anything (later first officer said he noticed a slight vibration). At 500' I called 500' and first officer called for flaps 50 flows off. A few seconds later we felt a pop on the right side. I thought we had a bird strike. After landing I went out and did a post preflight. I noticed the gear door was missing. Before the flight both my first officer and I preflted the aircraft and found no problems. I don't know why this occurred. All possible preflight actions did take place and no speed limitations were exceeded.

Original NASA ASRS Text

Title: LNDG GEAR DOOR FELL OFF ACFT.

Narrative: F/O'S LEG COMING INTO MEMPHIS INT'L. ON FINAL APCH F/O CALLED FOR GEAR AT OM. I CALLED 'GEAR SPD CHK (160) GEAR SELECT DOWN VLE = 164.' I DIDN'T NOTICE ANYTHING (LATER F/O SAID HE NOTICED A SLIGHT VIBRATION). AT 500' I CALLED 500' AND F/O CALLED FOR FLAPS 50 FLOWS OFF. A FEW SECONDS LATER WE FELT A POP ON THE R SIDE. I THOUGHT WE HAD A BIRD STRIKE. AFTER LNDG I WENT OUT AND DID A POST PREFLT. I NOTICED THE GEAR DOOR WAS MISSING. BEFORE THE FLT BOTH MY F/O AND I PREFLTED THE ACFT AND FOUND NO PROBS. I DON'T KNOW WHY THIS OCCURRED. ALL POSSIBLE PREFLT ACTIONS DID TAKE PLACE AND NO SPD LIMITATIONS WERE EXCEEDED.

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.