<< >> NASA ASRS Report 406603, June 1998

A B737-300 in cruise at FL330 diverted due to cabin vibration and noise at seat area xx most likely caused by a wing body fairing seal.

Attributes
ACN	406603
Time
Date	199806
Day	Sun
Local Time Of Day	0001 To 0600
Place
Locale Reference	atc facility : den
State Reference	CO
Altitude	msl bound lower : 33000 msl bound upper : 33000
Environment
Flight Conditions	Mixed
Light	Night
Aircraft 1
Controlling Facilities	artcc : zdv
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	cruise other other
Route In Use	enroute airway : zdv
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 15000 flight time type : 800
ASRS Report	406603
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical non adherence : far non adherence : published procedure other anomaly other
Independent Detector	other flight crewa other other : unspecified
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Received logbook, briefed flight attendants and crew about possible noise around row xx in cabin. In cruise, noise was very loud and floor was vibrating. Passenger and flight attendants very concerned. Phone patch with dispatcher and maintenance, could not pinpoint problem. Diverted to den, uneventful landing made in den. Concern: possible dispatch with open logbook write-up. Callback conversation with reporter revealed the following information: the reporter stated when the vibration was reported to the cockpit the reporter left the cockpit to investigate and before reaching the area could feel the vibration in the cabin floor. The reporter said the noise was very uncomfortable. The airplane was scheduled for a overnight layover for maintenance but was pressed into service due to a canceled trip but everyone was unaware of the inbound log report of the vibration.

Related reports:

• An MD88 immediately after takeoff diverted due to noise and ...
• A fokker 100 at FL220 diverted due to left engine high vibra...
• A ce-560XL crew diverted after a flight control vibration wa...
• A B757-200 in climb encountered icing. Had amber vibration i...
• An A320 flight crew diverted to the nearest suitable airport...
• A B767-400 in takeoff climb diverted due to gear door warnin...

	Enter your search terms Submit search form
	Web www.37000feet.com

Original NASA ASRS Text

Title: A B737-300 IN CRUISE AT FL330 DIVERTED DUE TO CABIN VIBRATION AND NOISE AT SEAT AREA XX MOST LIKELY CAUSED BY A WING BODY FAIRING SEAL.

Narrative: RECEIVED LOGBOOK, BRIEFED FLT ATTENDANTS AND CREW ABOUT POSSIBLE NOISE AROUND ROW XX IN CABIN. IN CRUISE, NOISE WAS VERY LOUD AND FLOOR WAS VIBRATING. PAX AND FLT ATTENDANTS VERY CONCERNED. PHONE PATCH WITH DISPATCHER AND MAINT, COULD NOT PINPOINT PROB. DIVERTED TO DEN, UNEVENTFUL LNDG MADE IN DEN. CONCERN: POSSIBLE DISPATCH WITH OPEN LOGBOOK WRITE-UP. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED WHEN THE VIBRATION WAS RPTED TO THE COCKPIT THE RPTR LEFT THE COCKPIT TO INVESTIGATE AND BEFORE REACHING THE AREA COULD FEEL THE VIBRATION IN THE CABIN FLOOR. THE RPTR SAID THE NOISE WAS VERY UNCOMFORTABLE. THE AIRPLANE WAS SCHEDULED FOR A OVERNIGHT LAYOVER FOR MAINT BUT WAS PRESSED INTO SVC DUE TO A CANCELED TRIP BUT EVERYONE WAS UNAWARE OF THE INBOUND LOG RPT OF THE VIBRATION.

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.