Narrative:

Flew an ILS to runway xy. The set speed was hook plus 8 for the wind additive. Tower called winds at 16 but no gust. All felt and appeared normal on the approach. At 30 feet I de-crabbed and started to drop the right wing. The landing picture seemed normal and at about 20 feet it started to feel like the 'bottom was dropping out'. I added a little power and the aircraft touched down very firmly. The aircraft didn't bounce and the rollout was normal. I wasn't sure if I it was a hard landing so I wrote up in the aircraft forms and debriefed maintenance (mx) that I had a possible hard landing. I walked around the aircraft and mx inspected it with no problems observed. This landing has bothered me since it occurred. I didn't observe anything out of the ordinary and I didn't see it coming. In the debrief with the first officer; he stated he didn't see anything out of the ordinary. The next morning I asked him if he remembered the cadence of the radio altimeter and neither could remember. I received an email that it was a hard landing and that airbus is recommending a gear change.the only conclusion I can reach is human error. I didn't see anything out of the ordinary developing. Approaching the touchdown I felt the landing might be firm but acceptable. While it was a long day with a night day swap the day prior; I didn't feel overly tired or fatigued. A high sink rate must have developed and I didn't see it or correct.I missed something with this landing. Whether the cause was sink rate; speed control; wind shift or gust. I still can't explain why this happened. I am confident in my abilities to capture and correct for changing conditions. My crosscheck missed a developing situation and I failed to recognize or correct the situation.

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Original NASA ASRS Text

Title: A300 flight crew reported a hard landing resulted in a recommendation from Airbus to replace the landing gear. Radio altimeter reportedly provided no callouts during short final; which was cited as a factor in the hard landing.

Narrative: Flew an ILS to runway XY. The set speed was hook plus 8 for the wind additive. Tower called winds at 16 but no gust. All felt and appeared normal on the approach. At 30 feet I de-crabbed and started to drop the right wing. The landing picture seemed normal and at about 20 feet it started to feel like the 'bottom was dropping out'. I added a little power and the aircraft touched down very firmly. The aircraft didn't bounce and the rollout was normal. I wasn't sure if I it was a hard landing so I wrote up in the aircraft forms and debriefed Maintenance (MX) that I had a possible hard landing. I walked around the aircraft and MX inspected it with no problems observed. This landing has bothered me since it occurred. I didn't observe anything out of the ordinary and I didn't see it coming. In the debrief with the first officer; he stated he didn't see anything out of the ordinary. The next morning I asked him if he remembered the cadence of the radio altimeter and neither could remember. I received an email that it was a hard landing and that Airbus is recommending a gear change.The only conclusion I can reach is human error. I didn't see anything out of the ordinary developing. Approaching the touchdown I felt the landing might be firm but acceptable. While it was a long day with a night day swap the day prior; I didn't feel overly tired or fatigued. A high sink rate must have developed and I didn't see it or correct.I missed something with this landing. Whether the cause was sink rate; speed control; wind shift or gust. I still can't explain why this happened. I am confident in my abilities to capture and correct for changing conditions. My crosscheck missed a developing situation and I failed to recognize or correct the situation.

Data retrieved from NASA's ASRS site 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.