A B767-300 flight crew was advised by maintenance the right main landing gear door was missing.

Attributes
ACN	635616
Time
Date	200410
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : zzz.tower
Operator	common carrier : air carrier
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance ground : parked
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : private pilot : multi engine pilot : instrument pilot : atp pilot : commercial
Experience	flight time last 90 days : 250 flight time total : 7400 flight time type : 1450
ASRS Report	635616
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 210 flight time total : 13000 flight time type : 5000
ASRS Report	635975
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other other : 3
Resolutory Action	none taken : detected after the fact
Consequence	other other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

After landing, maintenance notified us one of the right main gear doors was missing and separated from the aircraft. Callback conversation with reporter revealed the following information: the reporter stated the landing gear was extended below the speed limits for extension. The landing gear door recently had a service bulletin accomplished where 4 bolts were replaced and maintenance said one bolt had failed. This entire door except for the hinges and fasteners is a composite structure.

Original NASA ASRS Text

Title: A B767-300 FLT CREW WAS ADVISED BY MAINT THE RIGHT MAIN LNDG GEAR DOOR WAS MISSING.

Narrative: AFTER LNDG, MAINT NOTIFIED US ONE OF THE RIGHT MAIN GEAR DOORS WAS MISSING AND SEPARATED FROM THE ACFT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE LNDG GEAR WAS EXTENDED BELOW THE SPEED LIMITS FOR EXTENSION. THE LNDG GEAR DOOR RECENTLY HAD A SERVICE BULLETIN ACCOMPLISHED WHERE 4 BOLTS WERE REPLACED AND MAINT SAID ONE BOLT HAD FAILED. THIS ENTIRE DOOR EXCEPT FOR THE HINGES AND FASTENERS IS A COMPOSITE STRUCTURE.

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.