<< >> NASA ASRS Report 742507, June 2007

A319 flight crew experienced airframe vibration approaching leveloff. Speed was reduced and vibration dissipated and did not return.

Attributes
ACN	742507
Time
Date	200706
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : phl.airport
State Reference	PA
Altitude	msl single value : 27500
Aircraft 1
Controlling Facilities	artcc : zny.artcc
Operator	common carrier : air carrier
Make Model Name	A319
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 250 flight time total : 19000 flight time type : 4500
ASRS Report	742507
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Nearing leveloff at FL280; we experienced a strong airframe vibration at 310 KIAS. Slowed to 280 KTS and vibration stopped. No further occurrence. Followed SOP. Landed normally. Callback conversation with reporter revealed the following information: company maintenance is are aware of the problem; and the rudder bearing hinge plates are being replaced as a preventative measure.

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Original NASA ASRS Text

Title: A319 FLT CREW EXPERIENCED AIRFRAME VIBRATION APPROACHING LEVELOFF. SPEED WAS REDUCED AND VIBRATION DISSIPATED AND DID NOT RETURN.

Narrative: NEARING LEVELOFF AT FL280; WE EXPERIENCED A STRONG AIRFRAME VIBRATION AT 310 KIAS. SLOWED TO 280 KTS AND VIBRATION STOPPED. NO FURTHER OCCURRENCE. FOLLOWED SOP. LANDED NORMALLY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: COMPANY MAINT IS ARE AWARE OF THE PROBLEM; AND THE RUDDER BEARING HINGE PLATES ARE BEING REPLACED AS A PREVENTATIVE MEASURE.

Data retrieved from NASA's ASRS site as of January 2009 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.