Narrative:

Upon arrival mechanic informed me that right main gear door was missing; and there was a hydraulic leak. I noticed that the large right main flying gear door was completely missing; and about half of a smaller gear door torn off/missing. At least 2 hydraulic lines on right main gear were bent; outboard line appeared to have a slow leak. Some salient points that I recall about flight and approach: 1) at no portion of flight from liftoff to landing did I hear any abnormal noise; or feel any abnormal vibration or buffeting. 2) no gear door EICAS messages or discrete lights were observed. 3) at all times on final approach; aircraft was at or above glide slope (about 8 mile final). 4) extended landing gear base to final; estimate 2;500 ft MSL. I called dispatch; informing them of event; they were already aware of it- maintenance probably made first call to company. I returned to cockpit; pressing master test button- all lights illuminated. I checked hydraulic quantity - all 3 read between 0.91- 1.01. When informed by dispatch that we were being put into crew rest; shut down aircraft beyond 'through station items;' and left logbook open for mechanic to write up since he discovered missing door first; and would likely be making repairs.

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Original NASA ASRS Text

Title: B767-200 Captain was informed by maintenance that post flight inspection revealed the right main landing gear door was missing from aircraft; and adjacent hydraulic lines were damaged and leaking fluid. Pilot had no indication and was not aware that anything was amiss during flight and taxi.

Narrative: Upon arrival Mechanic informed me that right main gear door was missing; and there was a hydraulic leak. I noticed that the large right main flying gear door was completely missing; and about half of a smaller gear door torn off/missing. At least 2 hydraulic lines on right main gear were bent; outboard line appeared to have a slow leak. Some salient points that I recall about flight and approach: 1) At no portion of flight from liftoff to landing did I hear any abnormal noise; or feel any abnormal vibration or buffeting. 2) No gear door EICAS messages or discrete lights were observed. 3) At all times on final approach; aircraft was at or above glide slope (about 8 mile final). 4) Extended landing gear base to final; estimate 2;500 FT MSL. I called Dispatch; informing them of event; they were already aware of it- Maintenance probably made first call to company. I returned to cockpit; pressing master test button- all lights illuminated. I checked hydraulic quantity - all 3 read between 0.91- 1.01. When informed by Dispatch that we were being put into crew rest; shut down aircraft beyond 'through station items;' and left logbook open for Mechanic to write up since he discovered missing door first; and would likely be making repairs.

Data retrieved from NASA's ASRS site as of July 2013 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.