Narrative:

After gear retraction increasing noise and vibration from forward section of aircraft. In a bank aircraft was slipping and had the characteristics of adverse yaw. We declared emergency and landed overweight at no more than 300 FPM descent. Callback conversation with reporter revealed the following information: the reporter stated that the root problem in this incident was the nose gear door's failure to close following gear retraction. Following repeated gear extensions and retractions, the main gear were also indicating a disagree up. The crew ultimately lowered the gear and returned to land. The aircraft was drop checked on jacks and the nose gear door actuator repaired.

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Original NASA ASRS Text

Title: AN EMB135 CREW EXPERIENCED ABNORMAL FLT CHARACTERISTICS, VIBRATION AND NOISE FOLLOWING LNDG GEAR RETRACTION. THE CREW RETURNED FOR AN OVERWT LNDG.

Narrative: AFTER GEAR RETRACTION INCREASING NOISE AND VIBRATION FROM FORWARD SECTION OF ACFT. IN A BANK ACFT WAS SLIPPING AND HAD THE CHARACTERISTICS OF ADVERSE YAW. WE DECLARED EMER AND LANDED OVERWT AT NO MORE THAN 300 FPM DSCNT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THAT THE ROOT PROB IN THIS INCIDENT WAS THE NOSE GEAR DOOR'S FAILURE TO CLOSE FOLLOWING GEAR RETRACTION. FOLLOWING REPEATED GEAR EXTENSIONS AND RETRACTIONS, THE MAIN GEAR WERE ALSO INDICATING A DISAGREE UP. THE CREW ULTIMATELY LOWERED THE GEAR AND RETURNED TO LAND. THE ACFT WAS DROP CHKED ON JACKS AND THE NOSE GEAR DOOR ACTUATOR REPAIRED.

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.